I have a 35 ft olive tree which I want to put in a raised brick bed on terrace. What size should it be, height and width?
Certified GKH Gardening Expert
Olive tree roots will grow outward as wide as the tree's canopy. You've not indicated your location, but I would suggest you contact a certified arborist before making this decision, or at least contact your local agricultural extension agency: https://www.gardeningknowhow.com/extension-search?zip=19720&radius=10&services_search_action=search&submit=Search
Nearby structures may be at risk, so it's important to talk with someone who knows the variety of tree you have, your climate and your specific situation.