Bought a new young acer today and am wondering whether the pot size is ok. Is it too wide or too shallow? Acer is 18" high (including the plastic pot) Blue pot is 12" diameter and 8" high / fit 7" of soil
Far too big. Acers don't appreciate being over potted. They're slow growing, so those small, finer roots sitting in wet soil won't be happy. It would be impossible to water it without wetting all the soil, and when it rains, you have the same problem. It won't dry out quickly, so the fine roots stay wet for too long. Just move it into a pot an inch or two bigger than what it's in, and pot on in the same way as it outgrows that.
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...
The thing is with those shaped pots, you can't get the plant out to repot it when the time comes. The best thing to do is get a straight sided pot to insert into the container. Then you can get your plant out no trouble
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Just move it into a pot an inch or two bigger than what it's in, and pot on in the same way as it outgrows that.
I live in west central Scotland - not where that photo is...