This is the second year I have tried to grow pumpkins. I have large, leafy, beautiful green plants with the orange blossoms but last year not even one pumpkin and this year it does not look like any are growing again. Do I have 'sterile' plants? I have a patch that I grew from seed and then several plants that I purchased at Home Depot. The plants from plants are doing very well but over all the plants from the plants as well as the plants from the seeds look big, leafy, healthy and have beautiful flowers.