Foxtail or foxtails in cannabis? Find out what they are

Written by on 6 August, 2020

Surely at some point you have heard about foxtail (or foxtails as it is also known) but if not, do not worry, here we explain what it is.

What are they?

This is a phenomenon, that deforms the flowers of cannabis, because when the foxtail occurs, the calyxes of the plant are piled on, top of each other instead of clumping together; giving a different appearance to the bud, because it creates a tall structure (in the form of towers), similar to a brush that reminds the tail of a fox.

You see, the buds are composed of groups of calyxes, which, when pollinated host the seeds of the plant, and these in regular conditions grow normal, creating round and uniform buds.

Is it good or bad?

The foxtail could be said to be not exactly negative for the plant itself, however, this could be an indicator that something is not right in some circumstances.

This anomaly can be caused by several factors, the most common of which are:

1) Genetic: in the cannabis world, there are strains that tend to develop foxtails genetically, so there is nothing to worry about this.

2) Environmental stress: the foxtail or foxtailing can occur for reasons external to the genetics of the plant, such as light or heat stress.

When the tops of plants are subjected to light sources that are too close together, they are likely to be exposed to excessive stress that will cause them to change their physical structure.

The resulting excess of light and heat creates an unnatural foxtail, and can create negative drawbacks to cannabis growing.

In addition, being subjected to constant light stress, the plant is likely to lose power.


Try to keep factors such as lighting and temperature at the right distance and levels, to avoid this anomaly, which could have negative consequences for your plants in the end.



Current track