I have an oak tree - grown from seed by a friend - which is now some 7 years old around 5' tall is extremely healthy and growing well in a 42cm dia x 32cm h pot. i would like to keep this in a pot for the next several years as a permanent planting situation is not currently available. i am thinking up to a metre dia pot. i would appreciate any comments and advise regarding this. Thankyou Wendy
Since there are no miniature oaks, I'm afraid your tree will not do well in a pot for 'several' years. It should be okay for another year or two, maybe three, as you pot it into larger containers, but there will come a point fairly soon where your oak will outgrow any container you manage to provide and become stunted. Oaks are large trees, even the smallest Japanese Oak reaches 20 to 30 feet with a spread of 20 feet in the ground, with a root system to match, and trying to 'keep it small' in a pot just means, after a time, it just won't grow properly.