Buy Photoperiod Cannabis Seeds — Maximum Control and Yield
Shop photoperiod cannabis seeds for full control over your growing cycle. Photoperiod strains let you extend the vegetative phase for larger plants and bigger harvests. Ideal for experienced growers seeking maximum yield.
1235 strains available
Strains A\u2013Z (O–P, part 18 of 26)
The rest of this category is indexed across the other pages above.
What Are Photoperiod Seeds?
Photoperiod cannabis seeds require a change in light cycle to trigger flowering. During vegetative growth, they need 18+ hours of light. Switching to 12 hours of light and 12 hours of darkness initiates flowering.
This gives growers full control over plant size. You decide when to flip to flower based on how large you want your plants.
Photoperiod vs Autoflower
The key differences between photoperiod and autoflower seeds:
- •Veg control: Photoperiod plants can veg as long as you want. Autoflowers veg for a fixed time.
- •Yield potential: Photoperiod plants typically produce larger individual harvests.
- •Cloning: You can take clones from photoperiod plants. Autoflowers cannot be cloned effectively.
- •Complexity: Photoperiod growing requires managing light schedules. Autoflowers are simpler.
Most experienced growers prefer photoperiod seeds for the additional control and yield potential they offer.
Frequently Asked Questions
When should I switch photoperiod plants to flower?+
Switch when plants reach about 50-60% of your desired final height. Most strains stretch 50-100% during the flowering stretch phase.
What light schedule do photoperiod plants need?+
18/6 (18 hours on, 6 off) during vegetative growth. 12/12 to trigger and maintain flowering. Some growers use 20/4 during veg for slightly faster growth.