To grow pumpkins along your fence:
- Choose a sunny, well-drained location.
- Plant in late spring (in northern locations) or early summer (extremely southern states).
- After preparing the soil by removing weeds and turning the soil to a depth of at least 8 inches, create small mounds of soil about 6 inches high, and spaced about 3 feet apart for a wire fence or about 5 feet apart for a picket fence. A wire fence offers more locations for the vine to hold on while a picket fence relies more on the horizontal crosspiece to hold the vine up.
- In each mound, push three seeds down to a depth of about 1 inch. Planting multiple seeds increases the odds that a seed will sprout in the mound since not all seeds are viable.
- Apply about 2 inches of mulch (such as pine chips or leaf mold) across the mound and out at least 1 foot. Mulch helps retain moist and helps to block weed growth.
- Water deeply each week if there is no rainfall.
- Once sprouts appear, pull out the weakest sprouts leaving one vine to mature in each mound.