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A Cannabis plant in the vegetative growth phase of its life requires more than 16–18 hours of light per day to stay vegetative. Flowering usually occurs when darkness equals at least 12 hours per day.
Cultivation of cannabis is the production of cannabis infructescences ("buds" or "leaves"). Cultivation techniques for other purposes (such as hemp production) differ.. In the United States, all cannabis products in a regulated market must be grown in the state where they are sold because federal law continues to ban interstate cannabis sales.
Cannabis strains is a popular name to refer to plant varieties of the monospecific genus Cannabis sativa L..They are either pure or hybrid varieties of the plant, which encompasses various sub-species C. sativa, C. indica, and C. ruderalis.
Cannabis ruderalis is a variety, subspecies, or species of Cannabis native to Central and Eastern Europe and Russia.It contains a relatively low quantity of psychoactive compound tetrahydrocannabinol (THC) and does not require photoperiod to blossom (unlike C. indica and C. sativa).
Alfalfa is a perennial forage legume which normally lives four to eight years, but can live more than 20 years, depending on variety and climate. [4] The plant grows to a height of up to 1 metre ( 3 + 1 ⁄ 2 feet), and has a deep root system, sometimes growing to a depth of more than 15 m (49 ft) to reach groundwater.
The year 2024 was one for the history books, and 538's visual journalists and reporters were hard at work explaining the data behind the news with visualizations and interactives. From 538’s ...
Annual plants commonly exhibit a higher growth rate, allocate more resources to seeds, and allocate fewer resources to roots than perennials. [11] In contrast to perennials, which feature long-lived plants and short-lived seeds, annual plants compensate for their lower longevity by maintaining a higher persistence of soil seed banks . [ 12 ]
Bark of C. sativa (sweet chestnut). Chestnut trees are of moderate growth rate (for the Chinese chestnut tree) to fast-growing for American and European species. [4] Their mature heights vary from the smallest species of chinkapins, often shrubby, [5] to the giant of past American forests, C. dentata that could reach 60 metres (200 feet).