What plants can and can not be planted next to tomatoes in a greenhouse

 What plants can and can not be planted next to tomatoes in a greenhouse

If you want to plant tomatoes in the main part of your greenhouse, then the question arises, what can be adjacent to them. It is perfectly acceptable to grow several plants next to tomatoes without any harm to both, and there are also popular crops that are better placed further away.


In principle, it is possible to grow eggplant with tomatoes. However, there are problems: common diseases. Plants can also be attacked by pests that are the same in both crops. In addition, eggplant needs more light and heat. Moisture attitudes vary too, with eggplant preferring abundant watering and more humid air, which can be easily circumvented if your greenhouse has two doors. The sides can be separated with a film, creating a microclimate in each part of the room.


Strawberries can be grown in the same greenhouse as tomatoes without any difficulty. Both of these crops do not like high humidity. To prevent plants from suffering from fungal diseases, the room is often ventilated. During flowering, a stream of air pollinates tomato and strawberry bushes. Other aspects of planting care are also the same.


Planting tomatoes and peppers next to it is not only possible, but also necessary. The common support will save you energy and materials. Just stretch the wire at a height of about 2 m and tie the bushes. Tomatoes and peppers require the same growing regime. They love light, so you should not thicken the plantings. The air should not be too humid. Provide plants with good protection against diseases and common pests. For this purpose, you can plant several marigold bushes on the garden bed.


Tomatoes go well with green crops - you can plant lettuce, celery, spinach, asparagus or sorrel next to them.If you place thyme, mint, basil, sage and thyme in the same garden with tomatoes, then, in addition to a wonderful harvest of aromatic herbs, get extra protection from soil pests. Spicy herbs can also improve the taste and quality of tomato juice.


If you plant early varieties of radish next to the tomatoes, then they will quickly give way to developing bushes of tomato seedlings in the garden. Thus, there will be no competition between plants for water and minerals. Basically, the agricultural technology of both crops is the same: they need infrequent but abundant watering and relatively dry air.

White cabbage

White cabbage is often planted "at the feet" of tomatoes - this thickens the planting. In addition, the wide lower leaves of cabbage heads cover the soil, preventing weeds from growing and preventing moisture evaporation. Cabbage butterflies cannot tolerate substances that come from nightshades, so the crop will not be affected by their larvae. This neighborhood is a great option for both cabbage and tomatoes.

Garlic and onion

Phytoncides, which are contained in garlic and onions, scare off garden pests from planting. It is better to place the onion that is grown for greens next to the tomatoes. He will quickly give way to his neighbors. But in the greenhouse there must be enough light so that all crops can develop normally. Tomatoes can be sprayed with an infusion of an arrow collected from garlic. This will increase their chances of resisting diseases and insects.


It is impossible to plant tomatoes and cucumbers in a room with one microclimate. Tomatoes prefer moderate temperatures and low air humidity, so the greenhouse must be constantly ventilated. Also, tomatoes need to be watered at the root and fertilized regularly. Cucumbers love hot and humid climates, they can suffer from drafts. Growing on fertile soil, they do without regular feeding. This moisture-loving culture definitely needs abundant watering and sprinkling.


Umbrella, dill and fennel, it is not recommended to plant on the same bed with tomatoes. However, there is an exception to this rule: Let's say you are growing dill for herbs and plan to remove it from the garden before you set the tomatoes. In this case, crops can be planted together - this will not harm the quality of the future crop at all.


Most experts agree that it is impossible to grow potatoes and tomatoes next to each other in a greenhouse. These vegetables are direct relatives, therefore they have the same diseases. It is quite difficult to completely protect plants from late blight and the Colorado potato beetle. However, you can experiment - the basic agrotechnical requirements for crops are almost the same.


Growing peas next to tomatoes is not recommended for an obvious reason: growing to a considerable height, the shoots and leaves of the peas will shade the plantings. In this case, the tomatoes will not have enough natural light. In addition, pea tendrils, clinging to tomato bushes, can mechanically damage them.

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What can be planted next to cucumbers

Even before the start of planting work, it is worth thinking about which crops will coexist, and which ones should be planted away from each other. Planning is very important if the plot is small and you want to plant a lot. As a rule, the central place in the garden belongs to potatoes and cucumbers. With potatoes, everything is more clear, a separate area is chosen for it. Meanwhile, cucumbers are more capricious crops. They need to be fertilized, and it is more difficult for them to find neighbors. Especially if they are planted outdoors, and not in greenhouse conditions.

Influence of neighborhood

Weather conditions not every year provide an opportunity for successful and high-quality ripening of tomatoes. For this reason, most of the gardeners are trying to plant tomatoes in the greenhouse. In the southern part of the country, tomato crops are planted outdoors.

Both options cause certain difficulties that relate to the correct neighborhood. To plant next to tomatoes, you need those crops that allow tomato bushes to develop correctly. Not knowing what to plant next to tomatoes can significantly complicate the process of growing tomatoes and ripening fruits. Tips will help you grow tomato bushes with other vegetables so that they do not interfere with each other.

In the greenhouse

In regions with unstable climates, tomatoes are usually grown in foil, glazed or polycarbonate greenhouses. This method of planting is quite justified: in greenhouses it is easier to control the temperature regime, and the humidity indicators inside the shelter are more stable. Consider several options for the neighborhood of greenhouse tomatoes with other crops:

  • With fast growing vegetables and herbs... To get an early harvest, many gardeners grow radishes, lettuce, spinach, parsley, dill, onions, lettuce, and Chinese cabbage in a greenhouse with tomatoes. Early ripening does not cause great inconvenience to tomato seedlings, so this method of growing is permissible. But! The growing season of early crops should be no more than 30-40 days, so that by the time the tomato bushes are fully developed, the compaction plants are removed from the garden.
  • With cucumbers... Neighbors completely unsuitable for tomatoes. Crops need diametrically opposite conditions for full development. Tomatoes love moderate watering and frequent airing at a humidity of 45-50%. Dampness and stuffiness contribute to the development of dangerous fungal infections. Cucumbers, on the other hand, prefer to "steam" in the heat with a humidity of 80-85%, and shed flowers and ovaries in dry air. The successful coexistence of both cultures is possible only by dividing the greenhouse into 2 compartments using a dense curtain (polyethylene, non-woven material).
  • With strawberry... Unfortunate neighborhood. The development cycles of a perennial berry crop and an annual tomato do not coincide: at the end of summer, tomatoes end their growing season and require a gradual reduction in watering, at the same time, strawberries begin to lay flower buds, requiring a lot of moisture and nutrients.
  • With pepper... A close relative can become worthy companions to tomatoes. Seedlings of both crops are planted in a checkerboard pattern so that the bushes do not shade each other during the growth process.
  • With eggplant... Neighborhood is undesirable. Actively eating eggplants will "eat" the tomatoes, and they, in turn, will create an unwanted shadow for the undersized "blue" ones.

Perhaps, until the end of the season, onions and garlic grown for greens can be left next to greenhouse tomatoes. The specific aroma of these crops scares off whiteflies and aphids, in addition, garlic reduces the risk of infection of nightshade crops with late blight.

Crop rotation in the garden, table of crops and plantings, predecessors and followers

In the following table, we have collected basic information on the compatibility of basic vegetables and which crops you need to rotate when growing in your country house.

A few words about conventions:

  • Vertically "what we plant", horizontally "after which we plant".
  • The "+" sign marks those crops that are good predecessors for each other when grown in the same place.
  • The sign "-" marks those plants that are better not to alternate when growing on the same plot of land.
  • Empty columns indicate that the predecessor has no visible effect on the plant.

The reason for the undesirable neighborhood of these cultures has nothing to do with the mysterious phenomenon of allelopathy. The close relationship of these cultures is to blame for everything. Both potatoes and tomatoes belong to the Solanaceae family and, accordingly, have the same diseases in their family history, and also suffer from the invasion of the same pests.

Growing tomatoes and potatoes in adjacent beds leads to an unwanted exchange of ailments.

The same rule applies to other members of the family: peppers and eggplants should also not be planted next to potatoes and tomatoes.

What to plant next to eggplant

These plants are quite picky, so it is not recommended to plant anything next to them, so as not to shade and thicken the plantings. But if every centimeter in a greenhouse is worth its weight in gold, onions, melons and low-growing varieties of tomatoes can be "settled" next to the eggplants.

If eggplants do not thrive in your greenhouse, do not grow them next to other crops.

Use every inch of your greenhouse or greenhouse rationally. Grow greens there in early spring. And with the onset of warmth, having plenty of vitamin crops, give up this place to thermophilic tomatoes, cucumbers, peppers and eggplants.

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