Temperature Sensitivity Pigmentation

Temperature sensitivity pigmentation refers to genetic traits that cause cannabis plants to express different anthocyanin and carotenoid levels in response to environmental temperature fluctuations. Plants carrying these genetics commonly display color shifts—from greens to purples, reds, or blues—when exposed to cooler nighttime temperatures, particularly during late flowering. This phenotypic expression is controlled by multiple genes affecting pigment production and is distinct from base coloration genetics. Temperature-sensitive strains have become popular in breeding programs specifically for studying genotype-environment interactions. The intensity and timing of color expression vary significantly across lineages, making this family valuable for understanding how cannabis responds to climate variation.

Breeders working in this category use temperature-responsive pigmentation as a marker for environmental adaptation and genetic diversity studies. Selecting parent plants that reliably express color changes at specific temperature thresholds helps develop cultivars suited to particular growing environments and seasons.