How many regenerations

How many times can I regenerate the same plant? Is it ever necessary to repot it?
Dave, Chicago, Illinois

Many marijuana varieties, including most sativa-indica hybrids, can be regenerated quite a few times. Anecdotally, one person grew a large plant in the southfacing window of his apartment building and harvested the plant in the late fall.

After the buds were clipped off, the plant was put back under lights and revegetated, then forced to flower in January. When the plant was harvested in the spring, it was placed back at the original window. That fall was the plant’s final harvest. Readers have written to me about their plants that are two years old and on their fourth and fifth regeneration.

To regenerate a plant, don’t remove all the vegetation from the branches during harvesting. Leaves and some small buds should remain. Place the plant under continuous light. Within two weeks, new vegetation will appear. The plant will continue to grow vegetatively until forced to flower. If the plant looks like it is oversized for the container it’s in, repot it into a larger container. Another way of determining when a plant is ready for repotting is to remove it from the container and look at the root structure. If the roots are circling the perimeter it’s time to move to larger accommodations.

Readers with grow questions (or answers) should send them to Ed at: Ask Ed, PMB 147, 530 Divisadero St., San Francisco, California 94117, USA

You can also email Ed at [email protected], and send queries via his websites at

All featured questions will be rewarded with a copy of Ed’s new book, Best of Ask Ed: Your Marijuana Questions Answered. Sorry, Ed cannot send personal replies to your questions.



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