This will depend on a variety of factors such as available light, nutrients, humidity, water and air temps, pH, oxygen and air flow to name a few! Each Growasis product page has production tables showing estimates of annual and weekly plants based upon the size of the system. For maximum production we recommend seeding, transplanting and harvesting on a consistent basis, The frequency of these activities will depend on the environmental factors noted above along with other potential sales, distribution and market factors.