Q.I Live In Cleveland Ohio. Having Trouble Growing Zuchinni And Cucumbers. Plant Start Off Ok Then Turn Yellow And Plant Dies. I
am purchasing diseased resistant seeds I have tried planting in raised beds using only miracle grow soil but they results are no better.
Certified GKH Gardening Expert
The container does not have adequate drainage. Water pools up in the soil, and causes disease. Even disease resistant cultivars cannot be confined with disease, as it will cause the soil to swing far outside of acceptable nutrient and pH ranges.
A different container will be necessary, and new soil (A low nutrient potting soil mixed with organic compost will be best for any cucurbit).
Here are some articles that will help: