Greenhouse cucumber problems: yellowing leaves

Why do cucumber leaves turn yellow in a greenhouse, and how can I combat it? To understand these processes, you'll have to take a close look at your garden. While cucumber shoots are developing and growing properly, they're still a rich green. Sometimes, in a greenhouse, cucumber leaves begin to turn yellow, which casts doubt on normal development and a good harvest.

If your cucumber leaves start to turn yellow, don't let this process take its course. This is a sure sign that the gardener has made some mistakes in caring for the plant, and if left untreated, the entire harvest could be lost.

About the causes and methods of elimination

The first thing that comes to mind (see video) when it comes to why cucumber leaves turn yellow in a greenhouse and how to combat it is improper watering. This means either insufficient or excessive watering. For cucumbers to thrive, they require high humidity. If the ovaries are small and the cucumbers are just beginning to develop, the leaves are the main source of moisture. Therefore, if there isn't enough water in the soil, both the leaves and the fruit develop unevenly. Read about it. What can be planted in the same greenhouse with cucumbers?.

To restore the plant's healthy appearance, you will need to constantly saturate the beds with warm water in sufficient quantities and switch to regular and proper watering.
Advice from experienced gardeners! Cucumber beds in a greenhouse need to be watered twice a week. Use 25 liters of warm water per plant—this amount will be enough to saturate the plant with moisture. It's better to warm the water in the sun rather than using mechanical methods.

So, to not only water your cucumbers correctly but also use the right water, on the day of watering, fill a barrel with water and leave it in the sunniest spot of the plot for the entire day. By evening, the water will have warmed up to the ideal temperature for watering.

Cucumbers in a greenhouse

If we're specifically talking about yellowing leaves on cucumbers planted in a polycarbonate greenhouse, there may be a number of reasons.

First of all, the following are among the reasons for yellowing leaves in a greenhouse:
1. night frosts;
2. insufficient amount of moisture;
3. a large number of ovaries;
4. damage by disease or fungus;
5. negative impact of insect pests.

To solve the problem, you'll need to identify the specific cause and then address it. For example, if the leaves have turned yellow due to frost, the affected parts of the plant should be pruned and protected from heat. This problem most often occurs in late spring and early summer; damaged buds should be removed and the soil treated with a weak solution of potassium permanganate. If the problem is due to diseases or pests, appropriate treatment should be carried out.

Over- or under-watering, as mentioned above, is the main reason why the leaves of this plant turning yellow in the greenhouse Or in open ground. This problem is especially acute in greenhouses, where neglected ventilation can create a dangerous greenhouse effect. It's crucial to ensure that water doesn't accumulate in the upper layers of soil, but rather penetrates evenly into the soil and reaches the plant's root system. Additionally, mineral fertilizers can be added to the deeper soil layers.

Advice! If the leaves turn yellow unevenly, but in patches, this is a sure sign that the plant is lacking potassium. Fertilizing will be necessary to restore the color.

About yellowing in the beds

This article provides a wealth of information on why cucumber leaves turn yellow in greenhouses and how to combat it, complete with photos. However, it's undeniable that plants grown outdoors can also turn yellow, and there will be specific reasons for this. Incidentally, some helpful tips will also be helpful when choosing a location for planting cucumbers indoors.

First of all, cucumbers shouldn't be planted in the same area of ​​the garden where they were previously grown. Rotating locations is essential. Furthermore, leaves can turn yellow in open ground due to constant exposure to direct sunlight, so be sure to provide the vegetable with shade.

Also, pay attention to the time of day you water your plants. It's best to water your beds in the evening, because if water hits the leaves at midday, it will attract sunlight, which can lead to severe and dangerous sunburn. Therefore, it's best to water in the evening or early morning.

About methods of protection

So, vegetables from the cucurbit family, which includes cucumbers, should not be planted in the same spot more than once every four years. In a greenhouse, the soil should also be disinfected and completely replaced every few seasons to ensure normal growth and development of garden crops.

Gardeners should definitely use biological plant protection. To do this, add appropriate fertilizers, which are readily available in stores, to each hole. These will stimulate seedling growth, inhibit the development of pathogenic fungi, and generally protect the plant from various problems.

It goes without saying that you need to ensure your plant is getting enough vitamins and microelements. It's also important to maintain the right level of microflora in the greenhouse and prevent the development of fungal diseases.

This is the most important information on the topic of why leaves turn yellow. cucumbers in the greenhouse And how to combat it. As you can see, some problems are the same for both indoor and outdoor cultivation. Others are specific to a particular growing method. We hope the advice in this article will be helpful, allowing you to accurately determine the cause of yellowing leaves and promptly treat the plant.