Basic Tips for Beginner Greenhouse Gardeners | HappySprout (2024)

Greenhouses can be an ideal space to grow crops in a contained environment. Whether you’re looking to set up a space to grow crops year-round, or you just want an enclosed space to keep them away from animals, greenhouses can be a good way to accomplish a controlled harvest — so long as you don’t overcrowd, and you don’t bite off more than you can chew (until you’re ready).

Contents

  • What is best to grow in a greenhouse?
  • Do greenhouses need lighting for plants?
  • How often should you water greenhouse plants?
  • How big should a greenhouse be?
Basic Tips for Beginner Greenhouse Gardeners | HappySprout (1)

What is best to grow in a greenhouse?

To have a good idea of what to grow in a greenhouse, consider: What can beginners grow in a greenhouse? You won’t want to try overwhelming yourself with too many unlike plants if you’re new to the space or gardening, and it may be best to stick with plants you’re familiar with at first. Those are often plants that thrive indoors and ones that you’d typically grow in your garden, like lettuce, tomatoes, cucumbers, peas, and peppers.

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Even though the greenhouse will be a contained space, you’ll still need to consider the outdoor conditions when deciding what plants to grow when. You should grow plants that prefer warmer temperatures during the warmer parts of the season and plants that prefer cool temperatures during the cool parts of the season. These will vary depending on what zone you’re in, so be sure to do some research before deciding what to grow first!

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Do greenhouses need lighting for plants?

Natural light is always the best way to go for a greenhouse, at least during warmer months when there’s plenty of daylight for the plants to thrive from; however, if your greenhouse is set up to be able to grow plants during the cooler months as well, you may consider other greenhouse lighting requirements such as grow lights. You may need grow lights for a portion of the day in order to provide the plants with the proper amount.

Make sure to do your research for which grow lights are best for the environment you’re in and the plants you’re growing. The wrong kind of light can potentially stunt the growth of the plant, which is the opposite effect you want it to have.

Basic Tips for Beginner Greenhouse Gardeners | HappySprout (2)

How often should you water greenhouse plants?

Like regular gardening, each plant in the greenhouse will have different watering preferences. You’ll want to treat them similar to your indoor houseplants; they won’t need to be watered every single day. There are plants and vegetables that need their soil to dry out between watering to prevent drowning or rot. It all depends on the climate they originated from. A good rule of thumb for most plants is to wait to water until the first inch or two of the soil is dry.

Make sure when you water, though, that you do so thoroughly. You should water them until it starts to drain from the bottom of the container, then give the soils some time to dry out. It’s also important to keep a regular watering schedule, especially when you’re growing fruits and vegetables. If the soil dries out too much between watering, the production of the vegetables could decrease, and your harvest will be smaller than you had initially imagined.

How big should a greenhouse be?

The key thing to keep in mind when deciding on a greenhouse is that your plants will grow. They’ll grow from starters into sprouts that need to be potted, and possibly outgrow that pot and need a new one. So try not to overestimate when you’re starting out. You’d hate to buy too many seeds and have more plants than you know what to do with.

The recommended minimum size for a greenhouse is 10 feet x 10 feet if you intend to grow a decent amount of plants. However, if you’re looking for something smaller to start out and don’t want to grow too much off the bat, you can always start with one as small as 6 feet x 6 feet. It won’t have a lot of space, but it will house those tomatoes and peppers until you can get a handle on how greenhouse gardening works.

Remember to keep it simple your first time around. You’ll have an easy time adjusting if you work with plants you’re familiar with in an unfamiliar environment instead of attempting to grow unfamiliar plants at the same time. Basic plant care is a must when growing in a greenhouse, so be sure to read up on the ones you intend to get.

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Basic Tips for Beginner Greenhouse Gardeners | HappySprout (2024)

FAQs

What are the best plants to grow in a greenhouse for beginners? ›

Tomatoes, Peppers, Cucumbers, Zucchini and Lettuce

When in doubt, start with your salad vegetables. These easy-to-grow plants have high yields and are particularly well-suited to a spring and summer grow season.

What not to put in a greenhouse? ›

What not to grow in a greenhouse
  • Giant Trees and Shrubs: ...
  • Invasive Species: ...
  • Aggressive Vines: ...
  • Water-Hungry Crops in Excess: ...
  • Plants with Extreme Temperature Requirements: ...
  • Highly Sensitive Varieties: ...
  • Crops with Pests and Diseases: ...
  • Plants with Excessive Maintenance Needs:
Nov 14, 2023

What is most profitable to grow in greenhouse? ›

Decorative plants and flowers; A profitable greenhouse crop, especially in spring. If you are looking for the most profitable greenhouse crops in spring, we recommend ornamental plants and flowers. Planting these plants and flowers and presenting them to people, especially before Eid, can bring a lot of profit.

What plants grow best in a greenhouse? ›

Here are a few warm-season crops you can grow in a greenhouse all year, or ahead of the season.
  • Tomatoes. You may want to look at the types of tomatoes that grow best in your region if you're planning to plant them out when the weather warms up. ...
  • Eggplant. ...
  • Beans. ...
  • Peppercorn Plant. ...
  • Peppers. ...
  • Cucumbers. ...
  • Alliums. ...
  • African Violets.
Jul 18, 2023

What is the best layout for a greenhouse? ›

Greenhouses with a single aisle down the center are typically 8, 10 or 12 feet wide. 10 ft. widths offer the most efficient utilization of bench space because you can put 3 ft. wide benches on both sides and have a 3-4 ft, wide aisle with room for plant to overgrow the benches.

How do you grow big buds in a greenhouse? ›

By keeping your plants short and wide, they produce more and larger buds because they're not using their nutrients to grow tall. Pruning also reduces the risk of mold because it encourages better airflow around the entire plant.

When should I start plants in my greenhouse? ›

When you want to transplant your seedlings into the garden in spring, sow seeds in the greenhouse about six to eight weeks before your area's last frost date. Begin hardening off plants two weeks before transition to the garden, in early spring or after last frost date in your climatic zone.

Why can greenhouses be bad? ›

The industry produces over 3.3 million tons of greenhouse gas emissions annually, which significantly impacts climate change. Even though greenhouses themselves aren't bad for the environment, constructing greenhouses produces pollution and adversely affects the environment.

Should I open my plastic greenhouse in the day? ›

For effective ventilation:

Open all doors and vents on sunny days. These can be left open at night if the temperature remains high.

Should a greenhouse have a floor? ›

One of the most important reasons to install a floor in your greenhouse is to provide a surface that is durable and easy to clean. A good greenhouse floor will protect it from moisture and pests, and it will make it easier to keep the interior clean.

Should a greenhouse be in full sun? ›

Full sun exposure ensures that the greenhouse soaks up all the warmth it can get, making it the best way to heat a greenhouse by increasing the unheated greenhouse temperature. This leads to a significant solar heat gain within the structure, creating a cozy and favorable microclimate.

What is the best height for a greenhouse? ›

Greenhouse Height

The height of the greenhouse depends on the desired height to the eave. An eave height of 5 feet is satisfactory for side benches with low-growing plants. For tall plants, an eave height of 6 or 7 feet is needed. The pitch of the roof should be 6 in 12 (approximately 27 degrees).

When should I start planting in my greenhouse? ›

The broad rule of thumb in the northern region of the United States is not to plant in a greenhouse until after Valentine's Day due to low light conditions in the winter months. Still, experts often recommend waiting to plant early spring vegetables – like lettuce, peas, and spinach – until March and April.

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