Yellowing Leaves On Zucchini Plant - Knowledgebase Question

Loomis, CA
Question by kidwell9
April 25, 2000
I planted zucchini squash on March 20,2000 and up until about a week and half ago it seemed to be growing and looking great. Now it seems that the leaves are turning yellow. Help!!! What should I do?


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Answer from NGA
April 25, 2000

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Yellowing leaves on squash plants is quite common and can be caused by a variety of things, including transplant shock, over or under-watering and lack of nitrogen. Zucchini like rich, moist soil that's has plenty of organic matter and drains well. They need nitrogen at the start of their growing for green healthy leaves. Try fish emulsion for an organic source of nitrogen or use a balanced fertilizer, e.g., 10-10-10. Follow package instructions for application rates. Water well before and after applying.

Squash are moisture sensitive and need a regular supply of water to thrive and produce fruit. How often to water depends on your particular soil's characteristics. You want to keep it uniformly moist, but not soaking wet, to a depth of 12-18 inches. I hope this information helps with your zucchini!


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