Calamus planting conditions: soil conditions, light conditions, temperature conditions.

Soil conditions: it likes a cool environment, mostly grows in swamps, planting sites should be sufficient water, and drainage and irrigation should be convenient, the soil should be rich in humus soil is appropriate.

Light conditions: it likes shade, intolerant of bright light, planting can be selected in the semi-shade, if the sunny place need to be planted after the construction of a sunshade, to avoid direct light.

Temperature conditions: it likes a cool environment, the temperature should not be lower than 4 ℃, the highest temperature should not exceed 28 ℃, the temperature between 10-18 ℃ is appropriate.

Morphological features:

Perennial herb. Rootstock aromatic, 2-5 mm thick, external light brown, internodes 3-5 mm long, root fleshy, with a majority of fibrous roots, rhizome on the upper part of the branch is very dense, the plant is thus in a clump, branches are often fibrous persistent leaf base.

Leaves sessile, blade thin, membranous leaf sheaths up to 5 mm wide on both sides of the base, extending several times up to the middle of the blade, tapering, deciduous; leaf blade dark green, linear, 20-30(50) cm long, base folded, spreading above the middle, 7-13 mm wide, apex tapering, no midrib, parallel veins numerous, slightly elevated.

Inflorescence stalks axillary, 4-15 centimeters long, three-angled. Leafy spathe 13-25 cm long, 2-5 times as long as or longer than the fleshy spikes, sparsely subequal; fleshy spikes terete, (2.5)4-6.5(8.5) cm long, 4-7 mm thick, acuminate distally, erect or slightly curved. Flowers white. Mature infructescence 7-8 cm long, up to 1 cm in diameter. Young fruit green, yellowish green or yellowish white at maturity. Flowering and fruiting period February-June.