How to Grow the Best Pumpkins

Plant in a location that gets full sun exposure and little to no wind. Opt for soil that is well-drained and aerated. Aerate by hand if necessary.

Grow a jumbo variety of seedling to get massive pumpkins, especially for contest entry. These pumpkins can require three to four months of growth and as much as 50 gallons of water every other day.

Plant pumpkin seeds only in warm weather, after the last frost. This may be as early as May to as late as June, depending on the region. Alternatively, start pumpkins from seed indoors and transplant to the garden when the temperature is reliably above 65 Fahrenheit.

Give the pumpkin plenty of room; its vines will spread and compete for nutrients with nearby plants. Allow at least 4 feet between pumpkins and other plants.

Fertilize with a 5-10-10 soil amendment formulation. Use about 5 qts fertilizer for a row that is 100-by-3-feet long. For giant pumpkins, opt for a 10-10-10 fertilizer.

Add boron to the soil, especially if it is sandy or prone to producing oddly shaped pumpkins. Sprinkle boron in quantities of about 1 lb. per 1 acre of soil.

Plant a cover crop such as wheat, oat or hairy vetch in the off season. This will condition the soil for optimal pumpkin growth.

Bury ground fish or seaweed with the pumpkin seedlings as an alternative fertilizer. This additive is beneficial pumpkins intended for display or consumption.