grasshopper
Well-known member
If you don't need them in numbers, then Greenhouse megastore is good with higher unit prices but low minimum purchase. Stuewe & Sons have better prices and more selections but have to buy a case at a time of anything. 4 x 9 is the most common size, equivalent to a bit less than 2.39 litre, slightly less than a trade gallon pot (about 2.84 litre)
I have bought cases of 4x9 from S&S and also bought the thin stuff from Amazon (without knowing at the time). For up potting purpose, there isn't a lot of difference because I don't keep the trees in a tree pot forever. Both did the job before the next up pot and were reuseable. Amazon stuff do rip at the corner if you pick up a pot at the corner like I do. I also rip the thick tree pots at the same spot if one needs comparison. If I have to guess, the thin stuff probably would break down sooner than the thick pots. Thick pots also hold the shape much better, which means it looks better and won't bulge but isn't as easy to fit into different trays other than the companion trays.
If you only need to up pot a few plants, you can use recycled soda bottles, 1 or 2 litres. None of my plants complained about the reused bottles.
I have bought cases of 4x9 from S&S and also bought the thin stuff from Amazon (without knowing at the time). For up potting purpose, there isn't a lot of difference because I don't keep the trees in a tree pot forever. Both did the job before the next up pot and were reuseable. Amazon stuff do rip at the corner if you pick up a pot at the corner like I do. I also rip the thick tree pots at the same spot if one needs comparison. If I have to guess, the thin stuff probably would break down sooner than the thick pots. Thick pots also hold the shape much better, which means it looks better and won't bulge but isn't as easy to fit into different trays other than the companion trays.
If you only need to up pot a few plants, you can use recycled soda bottles, 1 or 2 litres. None of my plants complained about the reused bottles.