Editing Calabash (section)

== Cultivation ==
[[File:Lagenaria-siceraria-2019-5-9 17-4-8-01.jpg|thumb|Pollen of ''Lagenaria siceraria'' (Size: ~60 microns)]]

Bottle gourds are grown by direct sowing of seeds or transplanting 15- to 20-day-old seedlings. The plant prefers well-drained, moist, organic rich soil. It requires plenty of moisture in the growing season and a warm, sunny position, sheltered from the wind. It can be cultivated in small places such as in a pot, and allowed to spread on a trellis or roof. In rural areas, many houses with thatched roofs are covered with the gourd vines. Bottle gourds grow very rapidly and their stems can reach a length of 9 m in the summer, so they need a solid support along the stem if they are to climb a pole or trellis. If planted under a tall tree, the vine may grow up to the top of the tree. To obtain more fruit, farmers sometimes cut off the tip of the vine when it has grown to 6–8 feet in length. This forces the plant to produce side branches that will bear flowers and yield more fruit.

The plant produces night blooming white flowers. The male flowers have long peduncles and the females have short ones with an ovary in the shape of the fruit. Sometimes the female flowers drop off without growing into a gourd due to the failure of pollination if there is no night pollinator (probably a kind of moth) in the garden. Hand pollination can be used to solve the problem. Pollens are around 60 microns in length.

First crop is ready for harvest within two months; first flowers open in about 45 days from sowing. Each plant can yield 1 fruit per day for the next 45 days if enough nutrients are available.

Yield ranges from 35 to 40 tons/ha, per season of 3 months cycle.

<gallery>
File:Calabash (Lagenaria siceraria) in Seoul.jpg|Pear-shaped bottle gourd in [[Seoul]], Korea
File:JfPasongBangkal8236SanRafaelfvf 23.JPG|Slim, elongated upo squash, in [[San Rafael, Bulacan]], Philippines
File:A tiny growing calabash (bottle gourd) with flower captured at night.jpg|A female Calabash flower with a visible ovary at night, in [[West Bengal]], India.
File:Lagenaria siceraria "geese".jpg|Crook-necked "geese" cultivar in [[Granville Island]] Public Market, Canada
File:Edible immature Lagenaria siceraria fruits, longissima snake gourds.jpg|Serpentine snake gourds in [[Media, Pennsylvania]], United States
File:Calabash flower.jpg|Calabash flower
File:Bottle gourd seeds.jpg|Calabash seeds
File:2007.10-310-270 Bottle gourd,bowl,spoon(frm Sikasso) Bamako,ML mon29oct2007-1315h.jpg|Collection of bowls and spoons made of bottle gourd from [[Mali]], 2007
File:2015-03-20 Wuhua District, Yunnan, Kunming 光華街(雲南省昆明市五華区, 中国) DSCF3570.jpg|Wuhua District, [[Yunnan]], [[Kunming]], China
</gallery>