I am considering buying a Rowan tree. I have been offered trees from 3 feet high to 6/8 feet high.
I would like berries ASAP, so what height should I choose to achieve this?
You'll have berries next year, I should think, with a bit of luck from the largest size. Look for good growth which might be mature enough to produce flower. You'll certainly need the larger size you've been offered.
Many thanks for your prompt reply and advise, much appreciated.
Yes, thinking about it, I agree, it makes sense to purchase an older tree
for this purpose more chance of getting berries.
Normally I recommend buying small and letting plants get established in their own time. However, in this case you're after berry as soon as possible, so the advice stands. For interest's sake - if you sow seed of native trees, and plant an 8cm - 10cm girth tree (usually about 2.5 metres tall), alongside, all things being equal, in four to six years' time the tree from the seed will have overtaken the pot-grown larger one.