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However, because Cannabis ruderalis flowers independently of the photoperiod and according to age, it has been used to breed autoflowering strains. [6] Pure sativas are relatively tall (reaching as high as 4.5 meters), with long internodes and branches, and large, narrow-bladed leaves.
Principal growth stage 1: Leaf development (main shoot) 10: G, M: First true leaf emerged from coleoptile D: Cotyledons completely unfolded P: First leaves separated 11: First true leaf, leaf pair or whorl unfolded P: First leaves unfolded 12: 2 true leaves, leaf pairs or whorls unfolded 13: 3 true leaves, leaf pairs or whorls unfolded 1 .
The flowers of Cannabis sativa plants are most often either male or female, but, only plants displaying female pistils can be or turn hermaphrodite. Males can never become hermaphrodites. [ 3 ] It is a short-day flowering plant, with staminate (male) plants usually taller and less robust than pistillate (female or male) plants.
At a very early period the Chinese recognized the Cannabis plant as dioecious", [20] and the (c. 3rd century BCE) Erya dictionary defined xi 枲 "male Cannabis" and fu 莩 (or ju 苴) "female Cannabis". [21] Male flowers are normally borne on loose panicles, and female flowers are borne on racemes. [22]
Watering frequency and amount is determined by many factors, including temperature and light, the age, size and stage of growth [22] of the plant and the medium's ability to retain water. A conspicuous sign of water problems is the wilting of leaves. [23] Giving too much water can kill cannabis plants if the growing medium gets over-saturated.
Cannabaceae is a small family of flowering plants, known as the hemp family.As now circumscribed, the family includes about 170 species grouped in about 11 genera, including Cannabis (hemp), Humulus and Celtis (hackberries).
Kief (from Arabic كيف kīf, "Joy, pleasure" [1] [2]), sometimes transliterated as keef, also known as "Dust" and "Chief" a.k.a cannabis crystals among other names, refers to the pure and clean collection of loose cannabis trichomes, which are accumulated by being sifted from cannabis flowers or buds with a mesh screen or sieve.
The plants form an upright, unbranched stem or the overlapping leaf sheaths form a pseudo trunk. [11] The alternate and spiral or two-line arranged, very large, simple leaves are divided into leaf sheaths, short petioles and leaf blades. The leaf blade has a length of 30 to 60 cm (12 to 24 in) and a width of 10 to 20 cm (4 to 8 in).
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