Squash Plants turning yellow

Asked June 7, 2013, 4:40 PM EDT

All of my young squash plants' leaves are turning yellow. This is happening to both winter and summer squash. I put new compost mix (compost + manure + dirt) in the garden this year. Could that be it? Is there anything that I can do?

Benton County Oregon

1 Response

If you are willing to sacrifice a plant, check and make sure that the roots are healthy and growing.

If you are not willing to sacrifice a plant, then we can assume the yellowing is mostly weather related. Once the soil get going digesting organic matter, the yellowing on the new leaves should diminish. In other words, the new foliage will be more green than the old foliage.

You can speed the recover and growth of the plants by applying a more readily available sourse of nitrogen, such as fish emulsion.

Good luck,

Danny McGrath, OSU Extension