How to Grow Vegetables in a Greenhouse

Monday, 6 August 2018 12:26:43 Europe/London

Having fresh vegetables for meals all year-round isn’t as tricky as it may seem with a greenhouse. You will need to monitor your greenhouse closely so you can provide your plants with a heated propagator during the cold, winter month and both ventilation and shade throughout the warmer, summer months.

Grow all of your favourite vegetables in your greenhouse by setting up a perfect balance between heating, water, and sunlight for a delicious result. These fresh vegetables will help you to enjoy a balanced Mediterranean diet, which helps you live a healthier life.

What Vegetables are Great for Greenhouse Growing?

Knowing which vegetables to grow in your greenhouse is one of the first steps to get started on your well-being journey. Make sure you know which levels of temperature and humidity the vegetables need so they can thrive. Don’t overcrowd your greenhouse from day one, as it can stress your plants due to lack of space, which will prevent their optimal growth.

You can start by planting hardy vegetables earlier in your greenhouse, grow plants like chillies and peppers and even add an aubergine plant or two throughout the summer, grow late French beans and salad crops in autumn, or grow heat-loving plants like sweet potatoes and okra. The list is endless, and a great greenhouse environment is all you need.

A few other great vegetables to grow in your greenhouse are:

- Cucumbers

- Lettuce

- Tomatoes

- Beans

- Potatoes

- Herbs

- Peas

- Carrots

- Melons

- Radish


Growing Vegetables All Year-Round

A productive greenhouse grows vegetables all year around, especially with quality heating and ventilation. From late-winter to early-spring, you can sow hardy vegetables such as cabbage, onions, lettuce, brussels sprouts, and peas, perfect to plant out when the summer months bring warmer weather.

You can even sow peppers and tomatoes early in a heated greenhouse. Make sure to add a heated propagator to your greenhouse for good seed germination.

Around mid-spring, fast-growing tender plants like squash, pumpkin, courgette, sweetcorn, and melon can be sown. This allows you to have plants ready to be moved to your greenhouse in late-spring or in the garden in early-summer. Ready-grown tomato and pepper plants for unheated greenhouses, and sow basil to keep indoors or to move to your garden in summer.

Late-spring to early-summer allows you to move your summer greenhouse plants indoors, and harden off and plant young outdoor vegetables. Harvest your summer crops midway through the season and remove spent crops like melon, French beans, and cucumber. You can replace them with later sown plants afterwards.

During late-summer, plant potatoes in your heated greenhouse so you have a delicious crop around Christmas. If you have space, you can sow baby carrots and lettuce indoors and allow them to make the most out of the autumn sun.

In autumn, make sure to remove any spent summer plants and plant your lettuces in beds for a winter harvest. You can move herbs indoors for longer yielding times, and sow peas and broad beans to grow over winter and plant in spring, when clay soils have become easier to work with.

How to Grow Delicious Vegetables in Your Greenhouse

Make sure that you measure your greenhouse floor space and beds to ensure you have space for growbags. Additionally, plan ahead for the space your summer crops will need to grow appropriately.

You can sow seeds indoors in trays and plant pots with multipurpose compost, for example. Place your seeds on a sunny windowsill indoors or place them in a heated propagator. Should you choose to sow in an unheated greenhouse during winter, a propagator may not be enough to maintain appropriate temperatures.

When your seeds germinate, your seedlings will need appropriate heating and protection from frosty nights and cold days. Make sure to plant your vegetables in their final places only when they’ve grown sturdy and well-rooted enough. You can plant your vegetables into containers, growbags, or your greenhouse borders. Provide adequate support to climbing plants like melons and cucumbers, making sure to tie cordon tomatoes to canes for support.

During the summer months, provide a greenhouse fan heater for warm weather and add automatic ventilation for better venting. Check your greenhouse irrigation systems, as uneven watering can cause diseases such as blossom end rot. With cucumbers and okra, high humidity is preferred above venting - which can easily be done with damping down. Don’t forget appropriate shading fur sunny days, and add it gradually so there is even growth.

In the winter months, keep your glazing and other structures clean. Bubble wrap is a great insulation for unheated greenhouses, however, add a thermostat in your heated greenhouse for balanced temperatures at night. A minimum/maximum thermostat is advised, as it allows you to monitor your greenhouse conditions.

Keep an eye out for grey mould, damping off, and powdery mildew, as these diseases are quite common in greenhouses. With pests, glasshouse whiteflies, glasshouse red spider mites, and glasshouse leafhoppers are common.

Get in touch with our team to know more about our expert greenhouse products and essentials for great vegetable growth.

Posted in Blog By

Greenhouse Sensation

Submit Comment

* Required Fields

Please wait...

Continue shopping
View cart & checkout
Continue shopping
View cart & checkout