What happed to my cucumber flowers

[leon richard]

Had really good group of flowering cucumber plants. I fertilized w/ 5-12-12 and in a few days the plants although very healthy quit producing flowers. I know that if you add too much nitrogen, the plant we go into leaf and green direction instead of fruit. That’s why I used a lower nitrogen level if this is not the right fertilizer to get increased fruit production and please help me find one that will.

 

[Chuck]

Is it one or more varieties of cuc? Have you had any drastic temperature changes? Please send pictures