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cannabis foxtail

Cannabis foxtail

In a normal cannabis bud, these calyces grow close to each other, around the branches of the plant to form round, even nuggets. Foxtails, on the other hand, form when these calyces grow unevenly on top of one another, creating a lop-sided, uneven looking flower.

• Use a light spectrum that imitates the high UV of the tropics. Sativas can react poorly to the red spectrum of HPS during bloom. Supplement the lighting arrangement with a MH which has a blue biased spectrum, or a blue balanced LED. Using a MH from vegetative stage then through flowering, and not switching in an HPS at all works well with sativas.
Foxtails are a kind of aesthetic deformity we see in cannabis plants. Cannabis flowers, or buds, are formed by a bunch of unfertilized calyces. If pollinated by a male, each one of these calyces could house a seed. When left unfertilized, however, these calyces swell up and eventually form the buds we know and love.

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To make the most of the pure sativa indoor grow, give them extra attention. They generally don’t like too much feeding, too much nitrogen or too much moisture. Below are some tips that can help prevent foxtailing in sativas:
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Indoors, however, foxtailing can be caused by light stress during the flowering phase. In this case, plants start developing foxtails in parts of the flowers that are too close to the light source for too long. This is most common in setups with HPS or plasma lighting. Plants with this kind of foxtailing usually also have bleached or burnt tips or buds as a result of the heat from the grow light.

• Nitrogen and fertiliser sensitivity is a common feature to sativas. Many growers find that feeding bloom nutrients that are low in nitrogen by nature serve the plant best all throughout its life cycle, even feeding at half to a quarter of recommended dosages.

Heard about cannabis foxtailing? In this article we take a quick look at this phenomenon, its causes, and whether it's good or bad for your harvest.