Japanese Cherry Sucker Division: Graft Detection and Transplant Success

Critical: Check for Graft Union First

Many ornamental cherries (Prunus serrulata cultivars) are grafted onto hardy rootstocks (often Prunus avium or P. padus). Look for a knob or swelling at the base—the graft union. Suckers arising below this union are rootstock, not the desired cultivar.

If Suckers Are Above Graft (Desired Cultivar)

1. Ensure each division has substantial root mass.
2. Sever connecting root cleanly with sharp, sterile tool.
3. Pot immediately in good soil; water well.
4. Weekly watering + balanced fertilizer spring through summer.
5. Full sun after establishment.

If Uncertain or Rootstock Suckers

• Consult nursery of purchase or certified arborist.
• Or: transplant one as experiment—observe bloom in 2–3 years.
• Rootstock cherries often have small, sparse flowers, upright habit.

Proper identification saves years of growing the wrong plant.