Zucchini are very easy to grow and more often than not produce a large harvest of fruits each year. Problems can arise and you may see the plants turning yellow, so what can cause that and how worrying is it? If you spot discolored foliage when it may cause you to wonder, why are my zucchini plants turning yellow? In truth, there are a few usual suspects that cause foliage to turn yellow, namely nutrients, watering, pests, and disease. To help you identify, and hopefully rectify issues with a zucchini plant turning yellow, let's take a closer look at each, what may cause it, and what you can do to combat the problem in your .
Yellowing leaves can be a sign of the plant naturally ageing, though it may also be an indicator of more worrying issues. If you spot discolored foliage when out and about in your , then a closer examination may be required to get to the root of the problem. Acting quickly can help turn around a plant’s fortunes and mean you still get a great .
Zucchini plants are heavy feeders and need a lot of nutrients as they grow and develop their large foliage and fruits. Yellowing leaves can be a sign of poor nutrition, caused by a lack of nutrients in the soil. If a zucchini lacks enough nutrients, the foliage will be yellow and any fruits it produces will be smaller.
It may be a lack of nitrogen, iron, or manganese which causes the leaves to yellow. A soil test can show if your lacks certain nutrients and any deficiencies can be treated with fertilizer or with.