Growing a pumpkin can be a fun choice for a beginning gardener or young children who are learning about plants. There are many types of pumpkins, and most are relatively easy to grow. There are several tips and strategies to help the beginning grower to create a large pumpkin to use as a jack-o'-lantern, or several small pumpkins for use in pies. Among the best tips for growing a pumpkin are to choose a sunny spot for planting, plant the seedling in early summer, mount the soil around the seedling and provide the plant with the proper amount of water.
Planting
A pumpkin plant requires lots of sun and good soil for best results. Choose a sunny spot in your yard and consider using a little bit of organic compost to fill the hole after you dig. You also should choose whether to grow the plant from a seed or from a seedling, which is easier. If you want to start with seeds, they should be started inside before being transferred to the growing site. You should allow the seedling to become 3 to 4 inches (7.6 to 10.2 cm) tall before you plant it.
Pumpkin seedlings usually can be purchased in gardening stores and sometimes in hardware stores that have gardening departments. Planting should be done in early summer for a good yield by early fall. There are many pumpkin varieties to consider, and it is best to take the advice of the gardening department on which plants are most successful in your area. In most cases, if you are planting pumpkins just to use in pies, the small, dense sugar pumpkin variety is preferred.
The next step is to mound the soil. You should make a small hill about 2 inches (5.1 cm) in height. This gives the plant more space to expand its roots and discourages the development mildew, which can destroy the growing pumpkin. The seedling should be inserted about 1 inch (2.54 cm) into the mound.
If you are planting more than one seedling, they should be separated by at least 1 foot (30.5 cm), but not much farther than that. Honeybees typically pollinate the plants' flowers to produce pumpkins, but they also can be pollinated by hand if necessary. The chance of pollination by bees increases with more planted seedlings. Avoid using a pesticide such as malathion in your garden, because it can kill honeybees and reduce the bee population.
Watering
Pumpkins require watering every few days, but you should not over-water the plant. Unless the weather is particularly hot and the leaves seemed withered, the plant should receive water no more than every other day. The plant will quickly spread in the hot sun, and flowers typically will appear within four to six weeks, depending on the size of the initial seedling.
Thinning the Crop
If you are trying to grow a large pumpkin, you should eliminate all but one of the small fruits when they develop. Choose the best-looking pumpkin to remain, and neatly trim off its companions. Be sure to inspect the vine of the pumpkin that you intend to keep, and choose the one that is likely to receive the most sun. If the vine looks unhealthy, choose a different pumpkin. Smaller varieties do not have to be trimmed off, because they can produce four or five pumpkins on a single plant and occasionally produce as many as a dozen.
Harvesting
After you have trimmed off the excess pumpkins, the only task left is to continue watering the plant until the pumpkin has developed to the size and color you want. You can pick green pumpkins, because after being removed from the vine, they will become orange quickly. Smaller varieties will turn orange more quickly and are ready to pick after they are orange. After a pumpkin is picked, the hard shell can keep it good for several weeks or months. It is better to pick pumpkins earlier if your area receives significant amounts of rain in the fall, because they will begin to mold and rot if they are left on the vine.