Prune macadamia after harvest, take dead and inward wood first, and keep a canopy you can pick.

Prune after harvest to keep a tree you can pick
| Factor | Recommended | Avoid |
|---|---|---|
| When | After the nuts are off, before the next strong flush | Do not wait until the tree is 40 feet and then take half the canopy |
| Order | Dead and sick wood first, then inward and crossing wood, then height | Do not start with a topping cut that leaves a thicket of sprouts |
| Height | Keep a home tree at a height you can pick from the ground or a short ladder | Do not let it go to a 50-foot shade tree if you still want the crop |
| Young tree | Keep one strong leader and a few wide-angled laterals | Do not leave several competing trunks to split later |
macadamia does not need pruning to flower and bear. You prune to keep the work in reach and to take out wood that rubs or dies. [1] The easy window is after harvest, at the end of winter before the next flush. [2] On a young tree, keep one strong leader and rub off extra uprights so the frame stays a single trunk with wide laterals. [3] Left alone, the tree can run to 30 to 50 feet, which is a shade tree, not a backyard nut you can pick. [4]
When do I prune a macadamia tree?
Prune after the nuts are off, before the next strong flush. You can cut at other times, but that window is the cleanest.
Does a macadamia need pruning to bear?
No. Unpruned trees still flower. You prune to keep a size you can pick and to take dead or inward wood.
How to prune a macadamia tree
- Wait until the last ripe nuts are off the ground or the tree.
- Cut dead, broken, and diseased wood back to sound wood.
- Take inward and crossing branches next, so light and bees can reach the inside.
- Shorten the tallest tops until you can pick without climbing into a 30-foot canopy.
- On a young tree, keep one leader and a few wide-angled laterals; rub off extra uprights that compete with the trunk.
- Make a clean cut. Stop once the tree is open enough to walk around. A hard cut every year is not required.
Pick the crop on Harvesting Macadamia; that walk is not a substitute for this size work.
Finish the size cuts after the nuts are off, then leave the tree alone so the new wood can harden.
FAQ
Can I cut a huge macadamia hard?
Yes, but you will lose a crop or two while it resprouts. It is kinder to take a little height every year after harvest than to wait until you need a saw on a 40-foot trunk.
Recommended plants
References
- [1] Australian Macadamias -
https://www.australian-macadamias.org/caring-for-your-backyard-macadamia-tree-your-questions-answered/ - [2] Gardening Know How -
https://www.gardeningknowhow.com/edible/nut-trees/macadamia/how-to-grow-macadamia-trees.htm - [3] UF/IFAS Extension Volusia County -
https://blogs.ifas.ufl.edu/volusiaco/2018/03/22/macadamia-production-as-an-alternative-crop/ - [4] NC State Extension -
https://plants.ces.ncsu.edu/plants/macadamia-integrifolia/
This note is part of Macadamia Guides.
More pruning timing notes by plant live in Pruning Guides.
Updated: Reviewed by Bosquelle Editors

