All of my plants have the same irrigation setup, get fed the same, have pretty close to the same light condition and the same strain I have 24 plants most over 6' tall and 6' diameter however 6 of the 24 are around 4' tall with 3-4' diameter The only variance I see that seems to coincide with the smaller plants is increased amount of fresh soil. The smaller plants tend to have closer to 1.5' depth of soil and the larger around 1'. The soil was purchased from a worm casting farm 10% casting 22% volcanic rock and the rest compost. The native soil is rock hard clay tilled 6" down Is there anything else that could be the cause? Probably hard to diagnose without checking things out. Caveat: Family garden prop215,SB420 legal.