Gourds are ready for harvest when the stems dry and turn brown. It is best to harvest gourds before frost. Mature gourds that have a hardened shell will survive a light frost, but less developed gourds will be damaged. The lagenaria will tolerate a light frost; but gourd color may be slightly affected. Gourds should be cut from the vine with a few inches of the stem attached. Take care not to bruise the gourds during harvest, as this increases the likelihood of decay during the curing process. Discard any fruit that is rotten, bruised or immature. After harvesting, gourds should be cleaned with soap and water, dried, and rubbing alcohol applied to the surface.
Curing cucurbita gourds is a two-step process which may take 1 to 6 months depending on the type and size of the gourd. Surface drying is the first step in the curing process, and takes approximately one week. During this time, the skin hardens and the exterior color of the gourd is set. Place clean, dry fruit in a dark, well-ventilated area. Arrange gourds in a single layer and make certain that the fruits do not touch each other. A slatted tray will allow air circulation around the gourds. Check gourds daily and discard fruit that show signs of decay or mold and any that develop soft spots.
Internal drying is the second step in curing and takes a minimum of four weeks. Keep the gourds in shallow containers in a dark, warm, well-ventilated area. If any mold appears on the outside skin, gourds can be wiped clean and allowed to continue drying. However, any gourds that become decayed, shriveled or misshapen should be discarded. Periodically turn the fruit to discourage shriveling and promote even curing. Providing warmth during the internal curing process will accelerate drying and discourage decay. Adequate curing is achieved when the gourd becomes light in weight and the seeds can be heard rattling inside. Cured gourds can be painted, waxed, or decorated.