Question
my sweet corn is over knee high but the stalks are lt green instead of dark green is it my soil do i fertilize. if so with what

Answer
Of all the vegetables, corn requires the largest amount of fertilizer for good productivity. You want a fertilizer high in nitrogen. This is the first number in the NPK ratio on the front of the packaging. A good ratio is 20-10-10. Nitrogen promotes dark green foliage and strong stalks. It should be applied every 10 days until the ears fully develop.

Good luck, and enjoy your garden.

Mike