What Is an Autoflower Strain?

An autoflower strain is a type of cannabis plant that automatically transitions from the vegetative stage to the flowering stage based on age rather than changes in light cycles. These strains contain genetics from Cannabis ruderalis, a wild subspecies that evolved in harsh northern climates with short growing seasons. Unlike photoperiod strains that require specific light schedules (typically 12 hours of darkness to trigger flowering), autoflowers begin flowering after 2-4 weeks regardless of lighting conditions. This genetic trait makes them particularly attractive to novice growers and those with limited space or equipment. Key characteristics of autoflower strains include: **Growing Timeline**: Complete seed-to-harvest cycles typically range from 8-12 weeks, significantly faster than photoperiod strains which can take 4-6 months. **Size**: Generally smaller and more compact, usually reaching 1-4 feet in height, making them ideal for stealth grows and limited spaces. **Yields**: Typically produce lower yields than photoperiod plants, averaging 1-4 ounces per plant, though modern breeding has significantly improved productivity. **Light Requirements**: Can thrive under various light schedules, with many growers using 18-24 hours of daily light throughout the entire cycle. **Resilience**: Often more resistant to environmental stress, pests, and diseases due to ruderalis genetics. **Popular varieties** include Auto Blue Dream, Northern Light Auto, and White Widow Auto. The autoflower market has grown substantially, with major seed companies like Dutch Passion and Royal Queen Seeds dedicating significant resources to autoflower development. While autoflowers traditionally had lower THC content, modern breeding techniques have produced strains testing 20%+ THC. However, they generally cannot be cloned effectively since clones retain the mother plant's biological age, limiting propagation options compared to photoperiod strains. *Disclaimer: This information is for educational purposes only. Cannabis cultivation laws vary by jurisdiction.*