Q.Hi, As My Spaghetti Squash Plants Are Beginning To Wither And Die, I Have Several Spaghetti Squash That Will Need Ripening. I Read
your tips about leaving them out in sunlight. Would putting them under plant lights ripen them as well?

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on August 7, 2023
A sunny window will work better. Every source I read said they would not ripen without sun. You can try it under a grow light, but they need warmth, too, about 85 degrees F. I did find a source where a reader used a grow light but it ripened very slowly.
https://www.gardeningknowhow.com/edible/vegetables/squash/spaghetti-squash-ripeness.htm
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