Cedar Mulch Causing Rose Decline: Oil Toxicity

Why Cedar Mulch Harms Roses

Ten established roses developed tiny, sparse leaves and no blooms after cedar chip mulch was replaced with hardwood shred. Cedar oil is toxic to rose roots.

Recovery Plan

1. Lightly prune to stimulate new growth.
2. Water extra long to leach residual cedar oil.
3. Expect full recovery by next season.

Mulch Recommendation

Use hardwood, pine bark, straw, or compost—never cedar or redwood near roses.