3 years ago I bought a mess of "12 gallon" growbags. They held 4 - 1 gallon Costco milk jugs (the weird rectangular kind) & one could imagine a fifth cut in half lengthwise fitting across the top. 5 gallons not 12 gallons. My plants did awesomely in them but REQUIRED daily & sometimes TWICE daily watering through our terrible heat. At the end of the season the soil was entirely a root mass that beating would not release any soil.
Those white grow bags also became very friable over 1 growing season - they ripped badly & unpredictably when I tried to use them a second year. This year pieces of them were used to cover dripper irrigation. Doubt the nibbets left will be useful next year.
Not as good an investment for me as the black plastiC 45, 30, 15 & 7 gallon containers I get from a local nursery for $3 (for 45 & 30), $1.50 & $0.75 apiece. Though I am planning on painting the tomato ones white or whatever light color I have in the garage this spring.
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