In North America it will perform well is USDA hardiness zone 9 or warmer, it can be grown in summer months elsewhere but should be started indoors and transported out in early summer at best. If planning on growing it perennially, it should be kept indoors over winter.
Gac seeds are larger than cucumber seeds and brownish red. The seeds have a small cavity or hole on one end, this hole should pointed downwards when planting them. They are not self pollinating and require pollen from other plants to produce fruit, as many as possible in close proximity is needed to ensure adeqaute pollination as well as genetic diversity.
Germination rate is generally not spectacular, nor is it incredibly abysmal but you should anticipate that some of the seeds will never germinate. Germination takes up to two weeks, but under good conditons with good specimens it can occur in as little as 6 - 10 days.
Good drainage and aeration is important, avoid both clay soils. If starting in potting soil be sure to incorporate some vermiculite and or perlite.
Anticipate flower bloom about 2 - 2.5 months after planting. So long as you have several plants within close proximity Mother natures birds and the bees should be able to handle pollination. You can also try your hand at hand pollination, especially if you only have a few plants. See - Hand Pollination
Gac is a perennial, although it will generally produce flowers in its first season it does not always bare fruit. When it does produce in its first season it produces very little. By its second year you should begin seeing good harvests.
Although some of the monikers assigned to this unique produce include the term"bitter" - it is not bitter unless eaten unripe, in which case it resembles "bitter-cukes" which is caused by a substance known as cucurbitacin found in cucumbers, similar compounds are found in Gac Cucumber / fruit. When ripe it has a flavor somewhat like cantaloupe, although not quite as Sweet. Its high carotene content adds a carrot like taste as well.
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