Overwintering Knock Out Tree Roses in Cincinnati: Protecting the Bud Union

Overwintering Knock Out Tree Roses in Cincinnati: Protecting the Bud Union

Tree roses are vulnerable at the bud union (graft point on trunk). Wrap with bubble wrap, snug at base of trunk and under rose head. Store in unheated garage ONLY after full dormancy (all leaves dropped). Water 1 cup monthly (damp, not wet). Spring: prune, apply Osmocote 14-14-14.

Follow-Up

• Wrap container only if garage freezes hard.
• Dormant = all leaves fallen.
• Return outside after 3 frost-free days; acclimate by window first.