I grew the biggest auto I’ve ever grown this last run. She measured 51-1/2 inches tall and 42 inches wide leaf tip to least tip. Dosi walker made by @TestOfOath , I’ve had some tiny one also. Most average 2-3 feet tall. For me the key is to put it in its final home as soon as the first true leaves pop. Give light nutes ( I use clonex seedling clone solution ). until 2nd or 3rd set and start to ease into normal nutes light dose and slowly up to normal dose. I grow hydro and can usually get some size out of auto. This was Dosi walker just before chop.
