Even if so, fret not. Perennial Weed Lives for two or more years; plants grow as long as conditions are favorable and frequently die back to soil level with hard frost; new growth emerges at the start of the growing season, originating from roots or stem remains; in warmer regions, some perennial weeds can be green year-round. I recommend Canna Bio and make sure the first few times use a diluted solution just to allow the plants a chance to adapt to their new diet. Source: http://www.pwprowse.com/2013/06/24/cannabis-connoisseurs-guide-the-seed-buying-edition/