best conditions for growing pumpkins
1 Pumpkins do best when the seeds are directly planted in the ground. 2  If your growing season is very short, seed indoors in peat pots about 2 to 4 weeks before last spring frost. 3  Be sure to harden off before transplanting. 4  Wait until the plant soil is 70ÂºF or more before sowing seeds.t depends on the variety and if you are growing them for size or for eating. The small-to-medium varieties may produce 4 or 5 pumpkins per plant. If you want bigger ones, you can pinch off some and stick to 2 or 3. The most common pumpkin problems/disease are probably powdery mildew and squash bugs/cucumber beetles.