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What do you grow in a greenhouse


Best Plants to Grow in a Greenhouse

Greenhouses have long been staples for nurseries and commercial growers. They allow these pros to grow a large and steady supply of plants year-round.

But the benefits of greenhouses have made them increasingly popular among home gardeners too. Besides extending your growing season by letting you control heat and humidity; a good greenhouse offers other perks.

It allows you to control a plant’s environment and prevent the spread of disease and invasion by pests and insects. If you have a valuable crop, a greenhouse can protect it from four-footed critters like deer and rabbits as well as bipedal pests like thieves.

Virtually anything you grow outdoors can grow inside a greenhouse or high tunnel, which is essentially an inexpensive greenhouse with fewer features. If you are wondering about the best plants to grow in a greenhouse, DripWorks is here to help. Read on for our suggestions on the top plants for a greenhouse.

Greenhouse Flowers and Ornamental Plants

Nothing chases away a case of the winter blues faster than colorful, beautiful flowers and plants. Many varieties smell as lovely as they look, making them truly a feast for the senses.

Salvia, a type of ornamental sage, is great for greenhouses. A member of the mint family, it smells wonderful. Salvia plants produce spikes of beautiful, bright blooms.

You can grow many other types of flowers and ornamentals in your greenhouse during the off-season that you would grow outside in better weather. Just a few good options include geraniums, impatiens, and petunias.

If you love the festive look of poinsettias, these also are ideal for greenhouse growing. Keep some in your greenhouse to celebrate Christmas.

Ferns are beautifully shaped and delicately colored but can be tricky to grow. Because you can control the microclimate in your greenhouse, consider raising some finicky ferns in it. They will reward you with lush green foliage and fascinating, fine displays.

Because you can keep it as hot and humid as you like in your greenhouse, don’t forget tropical plants. Beautiful orchids are one possibility. Fascinating carnivorous plants like Venus flytraps are another. Dial down the humidity but keep the temperature up to grow prickly cacti in your greenhouse.

Greenhouse Fruits and Vegetables

Just because its winter does not mean you have to settle for the cardboard taste of most produce sold at typical supermarkets. Continue to grow your own fruits and veggies year-round in your greenhouse for optimal taste, tenderness, freshness, and nutrition.

Warm-weather fruits and veggies are top picks for greenhouse growing. Prime candidates include tomatoes, cucumbers and summer or winter squash. Eggplants are another good bet.

Are you dreaming about those muskmelons and cantaloupes you feasted on last summer? Turn your dreams into reality off-season by growing some in your greenhouse.

Do not forget peppers, which love sun and heat. Whether your tastebuds lean to the mild or wild, you can grow anything from bell peppers to habanero peppers in your greenhouse.

In courts in France, those of royal blood used to keep orangeries to grow oranges throughout the weather. You can also grow citrus fruits fit for a king or queen in your greenhouse. Oranges, lemons, and grapefruits are all good choices.

If you live in a frigid climate, you can also continue to enjoy fresh, healthy greens and vegetables throughout the winter. Lettuce, spinach, kale, and mustard greens will all thrive in a greenhouse. You can grow other cool weather crops there too, like carrots, beets, peas, and broccoli.

For a long-term addition, consider asparagus. These plants can provide you a continual crop for up to two decades.

Greenhouse Herbs

Given all the fresh food you will be growing, you will want to have some herbs and spices on hand. Beat high grocery costs by growing your own. You will also boost the flavor of the dishes you make and provide you and your family better nutrition with fresh herbs.

Anything you can grow outdoors will grow in a greenhouse. Try mint, rosemary, and sage as well as thyme, parsley, and cilantro.

If you have a cat, do not forget to plant some catnip. Fluffy will love you for it.

What to plant in a greenhouse: 10 top crops to grow

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Need advice on what to plant in a greenhouse? If you've recently invested in one of these garden structures, you'll be pleased to know that there are plenty of grow-your-own options. And if you're still weighing up the idea of getting one in the first place, then this list of delicious picks will most likely sway your decision.

You may wish to add more exotic crops – melon, for instance – to your list of greenhouse ideas, which will thrive in the warmer conditions. Tender plants such as chilies and tomatoes are also well-suited choices that are great for even the most novice gardeners. Or, maybe you want to get a head start on sowing hardy veggies for an early harvest. All are possible with the help of a greenhouse.

Get your best harvest yet with these 10 picks for what to plant in a greenhouse

Our suggestions for what to grow in a greenhouse will help you make the very most of your vegetable garden this year.

1. Chilies

There are lots of different chilies to try

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Chilies are a fabulous ingredient in the kitchen, adding a kick to curries, stir-fries, pasta dishes, and everything in-between. And if you're short on space and have opted for one of the best mini greenhouses then they're a brilliant addition.

Learning how to grow chilies is relatively simple. They love bright light, shelter, and warmth, which makes them the perfect match for greenhouses. Start off the seeds in a heated propagator if your greenhouse is unheated, or indoors on a sunny windowsill, covered with a clear plastic bag. Once germinated, remove them from the propagator (or take away the bag). Transplant seedlings into individual pots when leaves appear. The RHS  advises to keep them at a temperature of 60–64ºF (16–18ºC) and water regularly.

From the ferociously hot Scotch Bonnet 'Animo Red' to the sweet and mild 'Trinidad Perfume', there are all kinds of varieties to try. And don't forget that as well as using them fresh, you can dry them to add to dishes all year-round.

Best time to plant: Late winter to mid-spring

2. Tomatoes

Support cordon tomatoes with stakes

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Learning how to grow tomatoes is an easy skill that will reward you with the most delicious summer fruits. As they are tender plants, they do very well in greenhouses, offering a longer growing season than those grown outdoors.

You can choose between bush or cordon varieties. Bush ones don't require staking or pinching out, so are often the best type to start with if you're a beginner. Whichever you choose, providing some sort of shade in the very height of summer can be useful to prevent tough skins.

Put pots of sown seeds on a warm, bright windowsill or in a propagator to encourage them to germinate. When it's time to transplant them into their final positions, gardening expert Monty Don of Gardeners' World advises to plant them deeply – 'at least up to the first leaves.' This will encourage them to grow more roots.

Best time to plant: Late winter to mid-spring

3. Melons

Cantaloupe melons are easier to grow than you might think

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A slice of juicy, fragrant melon is a real treat on a summer's day. These crops thrive in heat and humidity. So, if you have a greenhouse, it's not too tricky to grow your own.

They need fertile and moisture-retentive soil. If space is at a premium, consider growing your melons vertically. Keep watering regularly, until the fruit begins to ripen, then reduce. Similar to growing tomatoes, provide shading if it's very sunny.

It's also important to provide ventilation when the plants are in flower – this will allow the crops to be pollinated, as the RHS explains.

Cantaloupe are firm favorites with their sweet, orange flesh. Alternatively, how about learning how to grow watermelon with our guide?

Best time to plant: Early to mid-spring

4. Cucumbers

Save on space by training cucumbers to grow up high

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Learning how to grow cucumbers is another top choice for what to plant in a greenhouse. These delicious veggies are perfect for summer salads or sandwiches. Plus, homegrown ones taste so much better than ones bought in the shops.

It is important to note that there are two types of cucumbers: ones suitable for growing in greenhouses and ones that are grown outdoors. Greenhouse varieties provide long, smooth cucumbers. If you opt for an 'all female' type, you won't need to pinch out the male flowers (these are the ones that don't have immature fruits growing behind them).

Cucumbers are another crop that can be trained upwards, saving on space. Don't let them get too cold – the RHS recommends keeping the plants above 53–59°F (12–15°C).

Best time to plant: Mid-February to mid-March if you're growing them in a heated greenhouse and April for unheated greenhouses

5. Aubergines

Try growing aubergines in your greenhouse this year

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There are lots of decisions to be made when it comes to choosing a greenhouse. If you opt for a heated one, you can start some crops earlier. In the case of aubergines, this can be as early as January.

Transplant plants to their final position in spring. You'll need to provide stakes for most varieties to support the heavy fruits. Mist the leaves and water regularly, and feed periodically with a high potassium fertilizer when fruits begin to appear. 

They're a delicious and versatile ingredient and can be the real star of the show in many vegetarian dishes.

Best time to plant: January if growing in a heated greenhouse, otherwise February onwards

6. Potatoes

Start potatoes in your greenhouse for an earlier harvest

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If you learn how to grow potatoes in your greenhouse during the leaner months, you'll give yourself and your family a supply all year long. Plus, the greenhouse will keep them frost-free. 

If your greenhouse is a smaller design, you can grow potatoes in bags, containers, or a barrel. You do need to chit them first – this is when you encourage them to sprout before you plant them in your greenhouse. You can do this in January and February, then plant them in your container about six weeks later when the shoots are about an inch high.

Best time to plant: Early spring

7. Brussels sprouts

This nutritious vegetable can be started early in a greenhouse

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They may have had a bad rep over the years. But with some simple cooking skills, there are ways to transform the humble sprout into a delicious side dish. Plus, Brussels sprouts are a great source of vitamin C and folate, and the 'Brodie' variety has good holding ability and is disease resistant. 

Sow seeds in a greenhouse for a head start. You can then plant them outdoors in early summer. There's more advice on how to grow Brussels sprouts  in our guide.

Best time to plant: February

8. Peas

The 'Twinkle' pea variety from Suttons

(Image credit: Suttons)

If you sow peas early enough, they will be ready for your plate in early spring. Sow them alongside other hardy plants like leeks and sprouts, so that once the warmer weather appears you can plant them out.  

Peas do like a bit of warmth to aid their growth, so investing in a heated propagator could be worth it. This particular variety of pea pictured above can also be used in salads and is highly nutritious and easy to grow. It also provides a second crop a few weeks later.

Best time to plant: February onwards

9. Kale 

The 'Dwarf Green Curled' kale from Chiltern Seeds

(Image credit: Chiltern Seeds)

Full of nutritional value and called a 'superfood', this dwarf variety of kale was introduced before 1865 and produces an abundance of tender and delicate densely curled green leaves, of which the younger ones are perfect for salads. 

For salads, you can sow it all year round in your greenhouse. But, if you want it to mature then you should transplant seedlings five weeks after sowing into rich firm soil outdoors, with plenty of well-rotted manure dug in. 

Best time to plant: Early spring if aiming to plant out

10.

Cabbages

Cabbages are a stalwart of the veg patch and can be sown in your greenhouse to start

(Image credit: Marcia Straub/Moment/Getty Images)

If you start your summer cabbages off in late winter, they'll be ready for planting outdoors in the spring. They are a 'cool season' veg, which means they do well in greenhouses when it's colder. 

Rich in vitamin C and antioxidants, some varieties are delicious eaten raw as well as cooked. All you need to do is sow some seeds in a tray with compost, water well, and watch them grow until they are ready for transplanting into larger pots. 

As the weather gets warmer, get them accustomed to outdoor temperatures by placing them outside during the day, then plant them out around 18in (45cm) apart in raised garden beds.

Best time to plant: Late February to early March

What are some common problems when growing crops in a greenhouse?

Knowing what to plant in a greenhouse is the first step towards a fantastic harvest. However, there are a few common problems to watch out for.

Some plants can be susceptible to powdery mildew and gray mold when growing in a greenhouse. To avoid this, encourage the air to circulate by not crowding plants too close together. Also, be sure to provide plenty of ventilation by opening greenhouse vents on milder days. In winter, 'a combination of high temperatures and low light makes leaves and stems soft, spindly, and prone to gray mold which spreads rapidly in cool, damp conditions,' says the experts at Hartley Botanic , one of the oldest and most respected glasshouse and greenhouse manufacturers in the UK. 'Though good air circulation is vital, avoid chilling draughts – don't leave the door open and always err on the side of caution.'

You should also ensure that your soil has enough drainage. Don't forget about good plant hygiene, too – grab your pair of best secateurs and remove any dead or decaying matter quickly.

Another problematic issue can be pests. These include red spider mites, whitefly, and aphids. Keep an eye out so you can take action quickly should you spot them. Our guide on how to get rid of aphids has lots of useful tricks and tips.

Watch out for gray mold

(Image credit: Kay Roxby/Alamy Stock Photo)

What flowers can you grow in a greenhouse?

Don't forget that greenhouses can be useful for growing flowers, too, particularly if you want to give them an early start.

As early as January, antirrhinums and lobelia can be sown in a heated propagator at a minimum of 70–75°F (21–24°C), explains Hartley Botanic. You can also sow begonias, which 'should be sown on the surface of moist compost and left uncovered as they need light to germinate.' 

Geraniums are another option – when sowing, 'lightly cover geranium seed with fine grade vermiculite,' they advise. Greenhouses are also a good place to overwinter your geranium plants to protect them from frost.

As the team explains in their online magazine , you can also use your greenhouse to plant non-hardy bulbs or corms such as hymenocallis, veltheimia and moisture-loving watsonia during winter.  

'Gladiolus, tigridia and the more tender species of agapanthus can be grown on in warmth until early summer, and then planted outdoors a few weeks before they are due to flower,' they add.

The team also suggests growing freesias, which 'can be grown for display or cutting and flower naturally in late winter and thrive in a cool greenhouse. Also, try polyanthus (primula), molucella or 'bells of Ireland' and for later in the year, eustoma (prairie gentian). All these plants are easy to grow and will give impressive results.'

Greenhouses can be used to grow new perennials taken from cuttings, too. You can learn all about how to take cuttings from plants with our guide.

Geraniums can be brought into a greenhouse over winter

(Image credit: Judy Lawrance/Alamy Stock Photo)

Sophie has been an interior stylist and journalist for over 20 years. She recently trained to be a florist and launched The Prettiest Posy where she curates beautiful flowers for weddings and events.  

What to grow in a greenhouse

Content of Article

Why a greenhouse is needed

When you look at green hedges, meadows and parks, you may wonder what is the use of greenhouses? Why not just grow something in the garden? nine0003

The fact is that many vegetables are thermophilic and lack the short northern summer. Using a greenhouse, you can create a special environment in it that is a little warmer and more favorable for delicate or heat-demanding plants.

Greenhouses can protect against pests such as birds and rodents that can harm or destroy your crop. Greenhouses can also protect against harmful insects. They also protect against heavy rain, hail and strong winds. nine0003

What is best to grow in a greenhouse

Some vegetables grow best outdoors. But there are varieties specially bred for greenhouse cultivation.

Pepper

Since almost all varieties of pepper grow naturally in hotter climates, they are ideal candidates for greenhouse cultivation. Chili peppers, jalapenos, and sweet peppers are great for growing without taking up much space in a greenhouse.

Since pepper requires a minimum night temperature of about 13 degrees, it is very risky to grow it outdoors in central Russia. But even in an unheated greenhouse, the temperature will be enough for the pepper to bear fruit perfectly.

Tomatoes

Some tomatoes are best grown outdoors, but there are varieties suitable only for greenhouse cultivation. You will be able to harvest large crops until autumn and you will not have to think about pests. nine0003

The best varieties for greenhouses are tall. This way you can make the most efficient use of the space.

Cucumbers

Cucumbers do well in the ground, in growing bags or even in pots! But in a greenhouse, you can plant the seeds a little earlier and the fruiting period will increase.

Root vegetables

While root vegetables such as carrots and potatoes can grow well outdoors, growing them in a greenhouse means you can plant in early spring and harvest until fall. nine0003

Plant carrots densely, thin out as they grow, using small root vegetables for frying, stewing or salads. They will be tender, sweet and fragrant.

Beetroot is a versatile vegetable and can be grown in a greenhouse from early spring to late autumn.

Zucchini and squash

This is an excellent choice for growing in greenhouses. Pumpkins come in a wide variety of sizes, shapes, and flavors. Zucchini bear fruit well and are a great choice for beginners. nine0003

Brussels sprouts

Brussels sprouts come from Belgium and its surroundings. It is very healthy and very tasty! It does well in cool weather, so it is great for harvesting in early winter, when the rest of the vegetables have long been harvested.

Lettuce

Lettuce can grow in a greenhouse from early spring to late autumn, providing the whole family with herbs. You can plant a few of your favorite varieties for variety. nine0003

Peas

Some varieties of peas are better for growing outdoors, but there are varieties for greenhouses. Peas from their own greenhouse will be the star of the meal. Try different varieties of peas, your kids will love it!

Neighborhood of plants in the greenhouse

For good fruiting, it is important to choose the right plants. For this, the base culture is determined and compatible ones are planted to it.

Rich harvests for you!

What and how can be grown in a greenhouse, types of greenhouses, suitable crops

Growing vegetables is possible not only on open ground, but also in special buildings called greenhouses. They can get an earlier harvest.

Many novice agronomists often ask themselves: what can be grown in a greenhouse? In such shelters, crops such as beans, cabbage, onions, carrots, cucumbers, tomatoes, various greens, garlic and many others feel great. It is also important that vegetables can be grown in a greenhouse even in winter. nine0003

Content:

The main types of greenhouses

exist many types of such types buildings. But the most common ones are:

A rich crop can be harvested in a greenhouse

An arched greenhouse is an arc-shaped structure. Thanks to this peculiar design, plants receive much more light than in other buildings. Also, this greenhouse does not accumulate snow, which prevents damage.

The greenhouse, which is called a shed, must adjoin one of the sides to some solid building. The construction of such a shelter for plants saves money.

Especially if the building to which the greenhouse is attached is heated. The only drawback of a shed greenhouse is that snow must be constantly removed from the roof. nine0003

The most popular type is the gable greenhouse. Its roof is presented in the form of a triangle.

This is a fairly spacious building. There are cases when a recreation area is even built in it.

In order to grow crops in such a room in the winter, it is necessary to think over the heating system. When building this structure, you need to take care of a solid foundation. The roof and walls must also be durable.

To grow crops in winter, it is necessary to build a solid greenhouse that will be fully heated. nine0003

Expert opinion

Yuliya Yuryevna

I have a large garden and vegetable garden, several greenhouses. I love modern methods of plant cultivation and soil mulching, and I share my experience.

Ask a question

Greenhouses differ not only in the type of structure, but also in the quality of the material from which they are made. The most common types of greenhouses are film, glass and polycarbonate.

Regarding the latter type, we note that at the moment many stores and online stores offer ready-made designs. nine0003

Economical and also suitable for both home and industrial plant growing is the covered version.

The film should not be bought from cheap ones and must be the most transparent with sufficient density. If you save on material, then there is a chance that it will tear from wind, snow, or simply from mechanical damage. Then there is a risk of loss of crop and planting material. Which in the end will cost more than a quality film.

One of the disadvantages of such a greenhouse is the need to completely change the cover every 3-4 years. Although, this provides greater hygiene (as fungi are removed that could develop from moisture) and illumination. nine0003

For example, glass buildings will have to be washed regularly so that dirt does not block the light that plants need.

Also, it is necessary to design the structure so that the film itself is well fixed, otherwise, due to strong gusts of wind, it may be damaged or even torn off.

We recommend using a drip irrigation system in the greenhouse, which will greatly simplify care and provide your pets with the necessary humidity.

What can be grown in a greenhouse in summer

In summer it is better not to limit yourself to tomatoes and cucumbers alone. For a change, it is worth supplementing your greenhouse with other crops that also love warmth. These types include a large number of plants.

All labor in the future will surely be replenished. The main thing is to choose the right cultures that do not interfere with one another.

Don't limit yourself to planting just tomatoes and cucumbers

Tomatoes, green beans, beets, melons and watermelons

Together with tomatoes, the cultivation of asparagus beans is allowed. It will be enough to plant no more than four bean bushes. This will be enough for her family to eat for a whole year.

This is due to the fact that beans yield much more in the greenhouse than in the open. For tomatoes, this neighborhood should not become a burden, but rather the opposite.

Growing green beans improves soil quality because there are nodules in the root of the crop that release nitrogen. Therefore, you can and should plant beans between tomatoes. nine0003

Tomatoes and early beets

Small fruits of early beets are used in summer soups. Before planting, its seeds are soaked. Landing should take place no later than April.

Placement should be along the edge of the greenhouse. After planting, it is necessary to cover the soil with a special material that is intended for this purpose. By the time the tomatoes are planted, the beets are already beginning to sing, so they can be gradually removed by thinning. nine0003

Tomatoes and gourds

This option is not possible for every greenhouse. Tomatoes need good ventilation, but gourds do not like drafts.

Therefore, the arrangement of crops in the greenhouse must be carried out in accordance with the direction of the winds.

Expert opinion

Yuliya Yuryevna

I have a large garden and vegetable garden, several greenhouses. I love modern methods of plant cultivation and soil mulching, and I share my experience. nine0003

Ask a question

When growing tomatoes in a greenhouse, you need to take into account that even those varieties and hybrids that are considered undersized grow here much higher than on the street.

Therefore, it is imperative to prepare the tapestries in advance to tie up the plants. It is also recommended to plant in a row less often than in open ground. This is due to the tendency of plants to fungal diseases in conditions of high humidity.

An undoubted advantage of the greenhouse is the fact that the harvest will not only be obtained earlier, but will also be preserved for later. So, with good care, you can collect late-ripening tomato varieties in November, that is, in late autumn. nine0003

Cucumbers, eggplants, peppers

Do not mix different varieties of vegetables when planting

Peppers and eggplants can be good neighbors for cucumbers. But, based on their small height, it is worth considering placement, since cucumbers can shade other plants.

Peppers and eggplants can be planted on both sides of the entrance, and cucumbers can be planted a little further. When planting pepper, you should not mix bitter and sweet, as cross-pollination can occur. nine0003

Corn and cucumbers

This is done in areas where corn does not produce crops when grown outdoors.

It is worth noting that it is quite difficult to grow it. It is necessary to plant the plants in one row, and this prevents normal pollination. Empty cobs may appear. Often, flowers are self-pollinated to save the crop.

In summer, in order to rationally use the land in the greenhouse, it is possible to combine different types of crops. Before doing this, you should carefully study the preferences of each plant. nine0003

What can be grown in a greenhouse in winter

Many people have a question about the possibility of growing plants in winter. But no one can give a specific answer to this question, since everything depends on the design of the greenhouse and equipping it with various devices.

Properly arranged and equipped with all the necessary shelters, you can cultivate both vegetables and fruits.

An excellent option for filling a greenhouse is growing greenery

But for an ordinary summer resident who has the simplest greenhouse built by himself, growing greenery is considered the best option. nine0003

This type of culture is resistant to various changes and differences. Can produce a crop several times a year.

Planting of such plants is possible even in late autumn.

Green onions are the most popular in winter. Its cultivation is possible even in the most ordinary greenhouse, covered with ordinary film. Before planting, the soil must be carefully prepared. The soil is dug up along with fertilizers.

Planting onions should be done before the onset of winter cold. Usually the last landing date is mid-October. nine0003

In case of severe cold weather, the onion must be covered and warmed. This is done with the help of manure, which is laid on the onion in a thick layer. In February, all layers of insulation are removed, and the culture is covered with a regular film.

You can think about planting dill. In a winter greenhouse, it can be obtained in two months. For this plant, high humidity and a temperature of at least 15 ° C are very important.

To increase the humidity, the plants can be constantly sprayed with a conventional sprayer. In no case should drafts be allowed to appear, since dill does not like this at all. nine0003

Lettuce is the easiest to grow in a greenhouse. This is a very hardy plant. Watercress is considered the most successful breed for winter time. The crop can grow within three weeks.

All the most unpretentious plants can be grown in a greenhouse

Growing parsley in greenhouse conditions is the most difficult thing. This can be done in two ways: from root crops and seeds. Growing parsley from root vegetables is a very difficult job. It is easier to use ordinary seeds.

Various crops can also be cultivated in winter. The most simple is the process of growing various greens. nine0003

Growing plants in a polycarbonate greenhouse

A polycarbonate greenhouse can produce a wide range of vegetables and more. In such a greenhouse there is no need to equip a powerful heating system. She, thanks to her properties, copes on her own.

Green onion is a plant that is very beneficial for health. Thanks to greenhouses, it can be grown all year round.

It is only important to know in what period it should not be planted in any case, since it also needs rest. It depends on the type of plant. In winter, natural light will not be enough, so you should think about additional. nine0003

Do not forget about watering in a greenhouse

Mushrooms are also excellent for growing in such a greenhouse. They require special soil, which is called compost mycelium. Landing them is possible in any free place.

Mushrooms do not require additional lighting. It is important to monitor only the required temperature and humidity.

It is very difficult, but still possible, to cultivate lilies in a greenhouse. It is very important to maintain the temperature and humidity at the right level. Additional lighting is also required. The irrigation system should be drip. nine0003

Roses can also be grown in greenhouse conditions. This plant is planted in early November.

The first buds may appear as early as March. This plant can produce many flowers if properly cared for. Rest should be about two months, after which the plants can be planted again.

Polycarbonate greenhouses can grow not only vegetables, but also mushrooms and flowers. This is a rather laborious process, but the result can exceed all expectations.

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