Germination Temperature

Germination temperature refers to the optimal thermal range at which cannabis seeds initiate sprouting and root development. Most cannabis seeds germinate reliably between 70–85°F (21–29°C), with many showing peak rates around 75–80°F. Temperature stability during this phase affects germination speed, seedling vigor, and early root architecture. Fluctuations outside this range can delay sprouting or produce weak seedlings. This trait is not a terpene but rather an environmental parameter breeders and cultivators monitor to establish baseline seed viability standards and breeding protocols.

Breeders often document germination temperature performance as part of seed stability testing and phenotype standardization. Selecting parent plants whose seeds reliably germinate across consistent temperature ranges helps establish predictable cultivation parameters for commercial seed lines.