Managing Suckers on Grafted Fruit Trees: Peach & Crabapple

A gardener discovers her patio peach trees and weeping crabapple are grafted, and has sucker growth from the rootstock. She asks when/how to remove them, if they can be replanted, and how to handle future suckers.

Why Remove Suckers?

Rootstock suckers draw energy from the grafted variety (which produces the desired fruit/flowers) and offer no ornamental or edible value. Left unchecked, they weaken the tree, inviting disease and pests.

Removal Protocol

1. Timing: Remove as soon as seen—any time of year. Don't wait for flowering to finish.
2. Method: Cut flush with the trunk or main root using sharp loppers or a pruning saw. Avoid tearing bark.
3. Large suckers: If woody, use a saw; make a clean cut.
4. Discard: Do not replant. They are rootstock genetics (often wild, thorny, poor fruit). Compost or trash.

Preventing Future Suckers

• Inspect monthly during growing season; rub off tiny shoots with your thumb.
• Mulch around base (keep away from trunk) to suppress sprouting.
• Avoid damaging roots (mowers, trimmers) which triggers sucker growth.

Main Pruning (Different from Sucker Removal)

• When: Early spring at bud break (after daffodils bloom in cold climates).
• What: Remove dead, crossing, inward‑growing branches. Thin congested areas. Shape for open center (peach) or graceful weeping form (crabapple).
• Rule: Never remove more than 25% of canopy in one year.

Prompt sucker removal keeps grafted trees healthy and productive.