The cucumber is a creeping vine that roots in the ground and grows up trellises or other supporting frames, wrapping around supports with thin, spiraling tendrils.[2] The plant may also root in a soilless medium, whereby it will sprawl along the ground in lieu of a supporting structure. The vine has large leaves that form a canopy over the fruits. The fruit of typical cultivars of cucumber is roughly cylindrical, but elongated with tapered ends, and may be as large as 62 centimeters long and 10 centimeters diameter.
Cucumbers sold for eating raw are unripe fruits. If allowed to ripen, their skin becomes tough and rougher, like those of melons (which are in the same family).
Cucumis sativus originated in India. It has been cultivated for at least 3,000 years and can now be purchased in most parts of the world, being grown in glass (or plastic) houses in cooler regions.