I have three cucumber plants with lots of blooms, but have only had one ripe cucumber, one just died at about 2" long. Most of the blooms have turned white. Also, one of the cucumber plant looks a rust color on the leaves. My okra is producing, my black-eyed peas are filling pods, but my pole beans have blooms but no bean pods, and my tomato plants have lots of tomatoes and I have netting over 2. What do I need to give my cucumbers?