It depends how large you plan to grow your moms. I keep foot tall moms in QUART pots but I regenerate them from clones frequently, and 'mow' them and remove branches when they get too tall. There is a thread on keeping bonsai mums somewhere that is a good read. I have not root-pruned mine yet but that would be part of doing it correctly. If you need a nice big mom with more than 6 tops, go for the 3 gallon pot.
stinkyattic Reviewed by stinkyattic on . New Plan, Opinions Welcome Some of you may have seen my last grow log. It didn't go too well. Main problems were 90+ degree temperatures(even at night sometimes), and lack of a pH tester for the first couple of weeks. Some plants survived and are doing great now. Have a 40" bush and a slightly smaller plant flowering atm. Things are looking great. Few of my newer plants are around 12-14"s now. These will hopefully become my mothers. They will be kept in dirt but I'm converting to hydro. Purchased two 4' by 4' Rating: 5