There are lots of “gourdgeous” gourds available for decorating this time of year and I get many questions about growing and curing them.
Types of Gourds
There are three groups of gourds:
- Cucurbita pepo are the cute, colorful little ornamental gourds that make good decorations. They are closely related to pumpkins, summer squashes, and some winter squashes such as acorn and delicata.
- Lagenaria siceraria is a name that means drinking vessel since that is one of the many uses of these large, hard-shelled gourds. Speckled swan gourds, bottle gourds, dipper gourds, penguin or powderhorn gourds, and even one called caveman’s club are all Lagenarias. Hard-shelled gourds have been grown for over five thousand years for use as containers and utensils, and the immature gourds are edible.
- Luffa aegyptiaca or L. cylindrical is the well-known bath sponge. Luffas are more closely related to cucumbers than squash. Left to mature and dry, the outer shell is scraped off and the scratchy inner fiber makes a great scrubby.
We have grown speckled swan gourds in the past. Since they take about 120 days to grow to maturity we started the seeds six weeks ahead indoors and transplanted them outside in the spring after danger of frost had passed.
We kept the plants covered with floating row covers for as long as we could contain them to protect them from cucumber beetles. They they began to spread. Gourds are notorious space hogs with vines that can extend out forty feet from the center of the plant.
We pulled the vines off the deer fence daily; they really wanted to climb something. If you want to grow them on a trellis or arbor, make sure it is a rugged one. They are such rampant growers they will overwhelm a flimsy structure and we thought they could easily take down our plastic mesh deer fence.
Since all gourds belong to the Cucurbit family I was expecting our swan gourds to have squash-like flowers so I was surprised when they produced huge white flowers that are not like a squash blossom at all. It seemed like we had weeks of only male blossoms before we started to see female flowers with their tiny immature fruit at the base. I have learned that if you clip off the growing tip of the vines when they reach about ten feet long it will encourage more female blossoms to form while keeping the plants to a more manageable size.
Once the fruits are set they begin to grow fast! Dipper gourds with extra-long necks can be trained to grow around a broom handle to make an interesting twisted shape or you can even tie them into a knot!
Harvesting and Curing Gourds
Ornamental gourds can be picked as soon as their stems turn brown and tendrils next to them are dry. Luffas should be left on the vine until the stem is dry and the gourds are turning brown at both ends. The seeds will rattle inside when you shake them. Peel off the outer skin and the inner fiber should be tan and dry.
Hardshell gourds should be left in the garden to dry out. Unfortunately any colorful patterns, like on the speckled swan gourd, will be lost when the gourd is dry.
The skin will fade and discolor and even show signs of mold. As long as the shell does not rot, it will continue to dry inside. It can take 3 to 6 months for them to dry completely, depending on how thick the shell is. Wait until the gourd is totally dry before you craft it into a birdhouse, dipper, or whatever else you decide to make.
Our talented friend Camille transformed this gourd using decoupage and paint! The possibilities are endless so next year give gourdgeous gourds a try!