The Rupp Seeds Pumpkin Guide will help you produce the best crop possible for your market.
Plant pumpkins ½” - 1” deep. For a general rule of thumb plant seed the depth of three times the thickness of the seed. Plant spacing varies depending on fruit size. If planting a large pumpkin give plant approximately 72 sq. ft. of space. Medium sized pumpkins require 30 sq. ft. of space. Pie pumpkins require 24 - 30 sq. ft. of space. Miniature pumpkins require 10 - 24 sq. ft. of space. See the Pumpkin Planting / Harvest Timing chart on page 111 of the catalog for additional information.
Scout fields every 7 days to ensure crop health. Look for insect, weed, and disease pressure. The first three weeks focus on weeds and insect pressure. Then focus on disease pressure. For weed, insect, and disease identification and treatments consult the Midwest Vegetable Production Guide: Midwest Vegetable Production Guide for Commercial Growers 2020 or your local extension. Place pollinators in field to ensure maximum fruit set.
Harvest when fruit has developed deep color. Handles will appear dry. Cut handles with shears to protect handles from being broken off.
Clean fruit of dirt and wash in 5% chlorine solution. Let air dry and cure for 10 - 12 days. Make sure air is able to circulate around fruit. It is important to keep fruit dry.
Each variety or type of pumpkin has an optimum plant spacing for its best performance. If plants are too close, stress and competition can decrease fruit size and possibly even reduce the number of female flowers. Under extreme stress, tight spacing may eliminate the crop entirely.
Optimum spacing for maximum yield, especially for jack-o-lantern pumpkins, will not necessarily be the best spacing for large fruit size. For large fruit, we would suggest reducing plant density to the next recommended plant population.
|Pumpkin Plant Spacing Chart|
|Category 2||7 1/2 to 9’||4'||1,210 to 1,450|
|Category 3||6 to 7 1/2’||4'||1,450 to 1,815|
|Category 4||5 to 6’||2'||3,600 to 4,350|