While "gourd" is sometimes used to describe any plant in the Cucurbitaceae family, which includes squash and pumpkins, it's usually referring specifically to two plants, Lagenaria and Cucurbita. Although some species of Cucurbita are edible, others are used for decoration, as are species of the Lagenaria genus.
Types of gourds include hard-shell, including the bottle gourd, Lagenaria siceraria, and soft-shell varieties in the Cucurbita genus. Both types are attractive and showy when fresh, but can be dried and preserved indefinitely. Hard-skinned gourds tend to start out some shade of green, perhaps mottled with white. After drying or curing, they age to a tan or brown color. The soft-skinned gourds can be a riot of multi-colored combinations, including orange, yellow, green, white and blue. They come in unpredictable shapes and often are covered in bumps and warts.
|Botanical Name||Lagenaria; Cucurbita|
|Common Name||Ornamental gourd|
|Sun Exposure||Full sun|
|Soil Type||Rich soil with organic matter|
|Soil pH||6.5 to 6.8|
|Flower Color||Yellow, white|
|Hardiness Zones||3 to 10|
|Native Area||Africa; North America|
How to Grow Ornamental Gourds
Gourds are a warm season crop and, like winter squash, take the entire season to mature. Plant gourds in a similar fashion to squash and pumpkins: in hills of 2 plants spaced 4 to 5 feet apart, with about 6 to 7 feet between rows of hills. Different varieties will have different growth habits, but most gourd fruits develop best if the plants are raised off the ground onto a trellis or support and the fruits are allowed to hang. They will grow cleaner, straighter and they won’t get that discolored spotting that occurs when the fruits touch the ground.
As with other members of the Cucurbitaceae family, gourds can have trouble with pollination. If pollinators are not abundant in the area, you may have to pollinate by hand, by removing the male blossoms and dusting them onto the female blossoms. The female blossoms can be distinguished by the tiny immature fruit at the base of the flower. It is normal for there to be several male blossoms produced before you spot a female blossom. Hard skinned gourds bloom in the evening and at night. Soft skinned gourds bloom during the day.
The size and shape of your ornamental gourds will depend on the variety you grow, however, most have extensive vines. Squash vines can be pruned if they start to take over your garden. The fruits of the hard-skinned varieties tend to be larger and often have long, thin necks. Soft skinned gourds can be small enough to cup in your hand to larger than a pumpkin.
Plant your gourds in full sun, for the most flowers and the healthiest gourds.
Give the plants a light water immediately after planting, then once every two to three days for two to three weeks. After that, water the base of the plant about 1 inch per week. Never water the leaves, as it can damage the plant.
Temperature and Humidity
If starting from seed, start indoors between 60 and 65 degrees Fahrenheit. Outside, ornamental gourds do best in temperatures between 75 and 85 degrees Fahrenheit.
You can feed by side dressing with compost or by applying a balanced fertilizer when the vines start to bloom. The long gourd vines can be self-mulching, but use caution when weeding, since gourds are shallow rooted.
Varieties of Ornamental Gourds
Cut back the vines once they reach 10 feet to encourage the growth of female blossoms, which produce fruit, on the side stems.
Gourds are ready for harvesting when the stems dry out and turn brown. Cut the gourds with a few inches of stem intact. Throw out any bruised or soiled gourds, since they will continue to decline after picking. Do not use the stems as handles. They can easily break off and leave an opening for disease or rot to get in.
Ornamental gourds can be cured or dried after harvesting, to harden and preserve them for use as decorations and in crafts.
Growing From Seeds
Plant outdoors after all danger of frost has passed. Seeds planted in cold, wet soil will probably rot before germinating. You can get a head start by starting seeds indoors about 4 weeks earlier. Using peat or paper pots will lessen transplant shock.
Common Pests and Diseases
Gourds are susceptible to the same problems as other members of the squash family. Insects include aphids, cucumber beetle, squash bug and squash vine borer. Hand picking and using floating row covers early in the season help.
Diseases such as angular leaf spot, bacterial wilt, mosaic virus, and powdery mildew can be controlled with fungicides and crop rotation. It also helps to remove plant debris in the fall and allow for air circulation between the plants, especially in wet or humid weather.