NEVER!!!!!! If you cut down the plant to the ground it is DEAD!!! Pinch the top early at the 4th stage of leaves above the primary round ones and you will get 8 branches , then pinch again 4 stages up on new branches to get a million branches. If you want it to stay low tie the new braches down parallel to the ground and your side branches will grow up toward the sun, making hundreds of colas on one plant. marijuana cannot grow from a stub like a celery plant does or a forsythia yard plant does, EVER!!!! It must have some kind of green growth. NEVER PICH DURING BUDDING OR FOR THE 6 WEEKS BEFORE BUDDING. This removes the buildup of hormones that make buds and you only delay the buds from growing properly