Can You Grow Vegetables in a Greenhouse?

Can you grow a vegetable garden in a greenhouse? This is probably one of the most common questions we at greenhouse pros get asked.

Simply put it’s easy to do, but there are many underlying factors to consider when doing so. Let’s take at some of the most frequently asked questions.

What do you want to grow? how long are the growing seasons where you live? Do you want to grow food to feed your family (extensively, or just supplement what they eat), or do you just want some fresh greenery in your home during the winter months (just for looks)?

A lot of people think greenhouses are just ways to grow flowers and plants, but they don’t know that with small modifications to their existing greenhouses, they can be growing food as well.

Can you grow vegetables in a greenhouse?

Yes, you can grow vegetables in a greenhouse. A greenhouse is a structure that allows you to extend the growing season of your plants by providing an environment where they can grow during cold weather.

If you are looking to start a vegetable garden, but don’t have the space at home or on your property, a greenhouse may be the perfect solution.

There are many benefits to gardening in a greenhouse, including:

  • You can grow more types of plants than if you just planted them outside all year long
  • You’ll have access to fresh vegetables even when it’s too cold outside for most other plants to survive (or thrive)
  • You’ll be able to enjoy your garden throughout the entire year—even when it’s snowing outside!

What vegetables can you grow in a greenhouse?

When you think of a greenhouse, you might think of those huge structures built for tomatoes and other warm-weather crops.

But you can actually build a mini-greenhouse in your backyard, and it’s a great way to grow some amazing vegetables during the cooler months.

You might be surprised at how many different kinds of plants you can grow in a greenhouse!

Here are some of our favorites:


Tomatoes love the heat, so they’re great candidates for greenhouse growing. You’ll need to keep their soil moist at all times, but they’ll reward you with plenty of fruit through the winter months.


Cucumbers are another favorite vegetable that grows well in greenhouses. They’re drought-tolerant and they thrive on heat, so they’ll do well even when it gets cold outside in the winter.


Peppers like warmth and humidity, so they’re perfect for growing in greenhouses. There are many varieties out there that will thrive under these conditions—just pick one that suits your taste buds best!


Broccoli is a great vegetable to grow in a greenhouse. It’s easy to grow and will produce large, healthy heads of broccoli in a relatively short time.

Broccoli plants like a lot of heat, so they’re best suited for warm climates. They also prefer constant moisture, so they can be difficult to grow if you live in an area with dry summers.

If you have the right conditions, however, broccoli is one of the easiest vegetables to grow in a greenhouse because it doesn’t require much maintenance once it’s established.


Cauliflower is one of the easiest vegetables to grow in a greenhouse. When you’re starting out, it’s best to start with something simple and low-maintenance.

Cauliflower is one of the most forgiving crops, which means that even if you make mistakes or forget to water, it will still produce a crop.

You can choose between an open field or closed row system, but either way, cauliflower will thrive in a greenhouse environment.


Cabbage is a vegetable that can be grown in a greenhouse. It grows best in cold weather, so it’s a good choice for winter crops.

You can plant cabbage seeds in your greenhouse as early as January and harvest them as late as May. The plants will grow quite tall and require a lot of space, but they’re worth it because they produce large heads of cabbage with thick, succulent leaves.

The most common varieties include the savoy cabbage, which has crinkled leaves; red cabbage, which is an attractive shade of purple; and green cabbage, which has smooth leaves and is often used for coleslaw or salads.


You can grow a wide range of vegetables in a greenhouse, including carrots. Carrots are root vegetables that can be grown from seed or from transplanting young plants. They are rich in vitamin A, making them an excellent source of nutrients for your family.

Growing carrots require similar conditions to growing other root vegetables. They need full sun, good drainage, and plenty of water to thrive. The soil should be fertilized before planting and then again after harvest.

You can plant carrots in the garden or start them indoors before moving them outside when the soil warms up enough for planting outdoors.

If you’re starting your seeds indoors, plant them in pots with holes poked into the bottom so they don’t sit in water until they germinate and begin growing roots on their own.

When it comes time to transplant your seedlings into the ground or into containers outdoors, make sure there are at least 2 inches between each one (or more if you’re growing multiple varieties together).


Celery is one of the vegetables that can be grown in a greenhouse. It’s not necessarily a common vegetable, but it’s easy to grow and can be used in your everyday cooking.

You’ll want to start out with seeds or seedlings. The seeds will need to stay moist until they germinate, so you may need to cover them with plastic wrap or a clear container if the temperature is less than 55 degrees Fahrenheit. Once they’ve germinated, you can transplant them into pots or directly into your greenhouse soil.

Once you have planted your celery plants and they have sprouted roots, you will need to water them every few days so that their soil stays moist. You can also add fertilizer once every few weeks as well as feed them with compost each time you water them.

When it comes time for harvesting your celery plants, just cut off stalks from the top of the plant at ground level and then leave the leaves behind for another three months of growth!


Growing vegetables in a greenhouse is a great way to extend the growing season and ensure that you have fresh vegetables all year long. You can grow many different types of vegetables in your greenhouse, including fennel.

Fennel is a perennial herb that grows best in warm areas. It usually has dark green leaves, but they can also be yellow or bronze-colored. The plant produces small white flowers that resemble dill flowers, though they are smaller and less fragrant.

The plant has an aromatic licorice-like flavor which makes it popular with chefs around the world.

It’s also used to make absinthe—a liqueur made from anise seed oil—and some people believe it works as an aphrodisiac because it contains anethole, which is thought to stimulate libido!


You can grow leeks in a greenhouse. Leeks are a type of onion that’s grown for its edible greens rather than its bulb.

They’re closely related to garlic and chives, though they don’t taste like either of those vegetables when they’re cooked. Leeks are harvested when they’re still young and tender.

When you grow leeks in a greenhouse, you’ll need to provide the plant with plenty of sunlight, water, and nutrients so it can thrive and grow quickly.

Your greenhouse should be located in an area where it gets at least six hours of sunlight each day so that the leek plants will have enough energy to grow quickly and produce large amounts of leaves that can be harvested as soon as possible.


Onions are a warm-weather crop, so you can grow them in your greenhouse year-round. As long as it gets a lot of light, your greenhouse should be able to provide the right conditions for growing onions.

They’ll need about 12 hours of sunlight per day and soil that’s rich in nutrients and well-drained. They prefer loamy soil, which is made up of equal parts sand, clay, and silt.

Onions have shallow roots, so they require less space than other vegetables. A single plant can produce several bulbs before it goes to seed.

You don’t have to worry about transplanting them either since they grow from seeds that are planted directly into the soil.


Scallions are the perfect vegetable to grow in a greenhouse. They’re easy to maintain and harvest, they take up very little space, and they grow quickly.

Scallions can be grown from seeds or seedlings, but seeds are usually easier to find at garden centers and nurseries. If you choose to grow your scallion plants from seeds, plant them directly into the ground in early spring.

You can also start them indoors about three weeks before transplanting them outside, but this is more work than simply planting them right away.

Scallions need about six hours of sunlight per day, so if you’re growing them indoors make sure you have adequate light sources for those plants that won’t get enough natural sunlight from nearby windows or skylights.

To harvest your scallions, simply cut off the leaves at their base with a sharp knife or scissors. The bulb underneath will continue to grow for several weeks before eventually dying off completely when it gets too large for its own good!


Kale is a leafy vegetable that has been gaining popularity in recent years. Kale is actually a member of the cabbage family and it can be grown in a greenhouse year-round.

Kale is easy to grow and requires little maintenance, making it an ideal choice for beginners who are just getting started with gardening.

Kale can be harvested at any time during the growing season, but it is best when harvested young. Once kale reaches maturity it becomes tough and bitter tasting.

Kale plants grow well in soil that has been enriched with compost or manure. They also do well in raised beds made with rich soil that has been amended with organic matter such as compost or manure.

Kale should be planted directly into prepared soil when the seedlings are about 4 inches tall and have true leaves on them rather than just cotyledons (seed leaves).

In order to get the best results from your crop, plant seeds directly into prepared soil instead of starting them indoors first and then transplanting them later on down the road when they’re ready for their new homes outside in the garden space where they’ll be growing happily ever after!


If you’re looking to grow some vegetables in your greenhouse, lettuce is a great choice.

Lettuce is easy to grow, and it’s ready to harvest within a few weeks. Some varieties can be grown in pots or directly in the ground.

Lettuce is low-maintenance and doesn’t require much space. It grows well without any extra watering or fertilizer, so you won’t have to spend a lot of time tending to it.

Some types of lettuce also have resistance to disease and pests, which can help reduce the number of pesticides needed for growing them.

What are the benefits of growing vegetables in a greenhouse?

The benefits of growing vegetables in a greenhouse are numerous. In this article, we will discuss the following:

  • A greenhouse is a controlled environment that allows you to control the weather and temperature. This allows you to grow vegetables at any time of year, no matter what the weather is like outside.
  • Greenhouses are typically built with glass walls, which means that they allow for plenty of sunlight to enter the room. This helps your plants thrive and grow faster than they would if they were planted outside in an open field where there isn’t any sunlight being reflected back onto them from the ground or surrounding objects such as trees or buildings!
  • The temperature inside most greenhouses is always warm enough for plants to thrive—therefore allowing you to grow vegetables even during colder months when temperatures might be too low outside (or too high), without having to worry about whether or not your crops will survive long enough before they die off due to harsh conditions like frost (which can kill them off overnight).

What are the disadvantages to growing vegetables in a greenhouse?

There are many disadvantages to growing vegetables in a greenhouse.

  • First, because they’re so enclosed, they tend to be very warm and humid, which can lead to mildew and mold.
  • Second, if you don’t have good ventilation, it’s possible for the plants to get too much carbon dioxide (CO2), which can make them grow too fast and produce fewer nutrients.
  • Third, if you don’t have proper lighting systems installed, it’s likely your plants will not receive enough light to grow properly.

How can you successfully grow vegetables in a greenhouse?

Growing vegetables in a greenhouse is a great way to have fresh produce year-round. You can also grow plants that cannot tolerate cold weather, such as tomatoes. Growing vegetables in a greenhouse are not difficult if you follow these tips:

  • Choose the right kind of greenhouse for your needs. If you want to grow fruits or flowers, choose an enclosed building with glazed windows. If you want to grow vegetables and herbs, choose an unheated structure that allows for adequate ventilation.
  • Plant seedlings in the spring when the weather warms up, about two months before your area’s last frost date. Transplant them into the ground once they are large enough to handle transplanting without damaging their roots or stems at all!
  • Make sure that the soil is properly prepared before planting your seeds or seedlings so that they’ll have everything they need from the ground itself instead of having to rely on fertilizer from above-ground sources such as bags of composted materials or other types of fertilizer that may contain harmful chemicals that could damage plant roots when applied directly onto them!
  • Water your plants regularly so that they stay hydrated throughout their growth cycles each day until harvesting time comes around when most vegetables will require less water.


The truth is that you absolutely can grow vegetables in a greenhouse. However, it does take some careful planning and consideration.

You can’t just throw seeds into the ground and expect them to grow—they will, but you’ll have very little control over the entire process, and your yields may be lower as a result.

You also can’t count on all of the vegetables being different types of lettuce or tomatoes—variety is key to getting a good crop.

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