Benefits of Companion Planting

Tuesday, 21 May 2019 15:49:58 Europe/London

A well-maintained garden or greenhouse provides delicious vegetables and fruit all year around. There are a few plant combinations that are well-known for helping and supporting each other in addition to keeping pests away and attracting beneficial insects.  

Companion planting helps you plant compatible plants next to each other so they can enjoy and share mutual benefits. It might seem difficult to copy what nature does, but it’s quite easy! You’ll notice a wide range of benefits, including healthier plants and even some increase in crop yield.


Provide Shelter and Support

Corn is a great plant to provide natural support to plants like beans, as the latter will use corn as a climbing pole. This makes sure you don’t have to use artificial support at all. Plant tomatoes or peppers near lettuce; the lettuce will benefit from the shade that tomatoes or peppers provide, while these two vegetables thrive on sunshine.

Bushes are also ideal to provide extra support to weaker plants while protecting them from wind that can break their fragile limbs.


Attract Pollinators and Other Beneficial Animals

Bees, butterflies, and birds are very important for your garden, as they help it grow and be healthy. These critters will spend more time around if you plant the right flowers and vegetables, alongside providing pest control.

Cosmo flowers help to attract ladybirds and other predatory insects, so make sure to plant them near your vegetable garden. Lavender is great to keep pests at bay while attracting bees. Aphids can be kept at bay with plants like onions and mint, while anise will attract their predators.


Carrots and Leeks

Both carrot and leek plants have a strong scent, which makes it beneficial to plant them near each other. Leeks are highly susceptible to leek moths and carrots to carrot flies, so it’s helpful to plant these vegetables next to each other for healthier plants.


Avoid planting leeks next to: Peas, and bush and pole beans.


Avoid planting carrots next to: Dill, parsley, and potatoes.

Basil and Tomatoes

Basil and tomatoes are an amazing and delicious cooking combination, helping to cook up many great recipes. Additionally, basil helps to prevent certain tomato pests like aphids. This herb’s strong scent improves the tomatoes’ flavour while keeping the aphids away.


Avoid planting basil next to: Cucumbers, cauliflower, and cabbage.


Avoid planting tomatoes next to: Broccoli, potatoes, and cabbage.


Onions and Mint

Mint has a very strong scent that deters the onion fly from attacking the onions. Make sure that you plant mint in its own separate container, however, as it is an invasive plant and can very quickly get out of hand. Simply keep the mint containers around your onions.


Avoid planting mint next to: Parsley.


Avoid planting onions next to: Beans, peas, and asparagus.


Squash, Beans, and Corn

The vegetables are commonly known as the ‘three sisters’, as they thrive from being planted together. The corn will offer support for the beans while these pull much-needed nitrogen from the air and into the soil, and the squash leaves help to protect the soil by forming a living mulch.


Avoid planting corn next to: Celery and tomatoes.


Avoid planting squash next to: Garlic, onions, and peppers.


Avoid planting beans next to: Brassicas (such as broccoli) and potatoes.


At Greenhouse Sensation we have a wide range of gardening supplies to make gardening much more enjoyable and successful. Simply contact us if you’d like to know more about our products and how we can help transform your garden or greenhouse into a healthy space.

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Greenhouse Sensation

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