Critical Lemon FAST is a feminised, indica-dominant strain that has added ruderalis genetics before a selection was made based on non-autoflowering traits. The ruderalis has the effect of reducing flowering times by a week or ten days.

Critical Lemon FAST grows to a height of 80 - 90cm indoors taking between 50 - 55 days to flower with yields of 500 - 550 gr/m2. Outdoors, in the northern hemisphere, plants can grow as tall as 220cm, being ready for harvest between September 15th - 30th.

This strain features grapefruit and lemon terps and produces a THC level of up to 21%.