Zucchini Yellow Leaves
Leaves problem · common pattern reported by gardeners · verify locally
What you'll see
- Lower leaves yellow
- Leaves crisp and brown later
- Poor vigor
Most common causes
- Nitrogen deficiency in heavy feeders
- Overwatering
- Squash vine borer damage (sudden wilt)
How to fix it
- Feed monthly with balanced fertilizer
- Check for vine borer holes in stems
- Remove spent leaves
Prevention: Rich soil, monthly feeding Watch for borers mid-summer Rotate beds
More Zucchini problems
Grow Zucchini with confidence
Open the Zucchini growing guide → · Planting calendar · Pest & problem diagnoser
ZoneFig content reflects widely published extension-service and gardening guidance. Symptoms and causes are common patterns, not a diagnosis for any individual plant — verify locally and treat conservatively.