yes, yield is reduced somewhat, because there are now seeds growing where the flowers were, BUT ... the resulting seeds will give me an inexhaustible supply for years, I can't afford to keep buying those high-dollar seeds ... and, you can always remove the male plants from the growing area, collect the pollen on a paintbrush, and 'paint' the pollen onto just a few of the lower female flowers, so you will have the best of both worlds: buds on top, seeds below ... :smokin: