Marin Rose Society

FAST FACTS - PHYLLODY
by Nanette Londeree, Master Rosarian

SIGNS

None

SYMPTOMS

Abnormal flower form

Blossoms have leaf-like structures rather than flower organs

New flowers growing out of the reproductive portion of the rose

Normal and abnormal flowers simultaneously on the plant; overall plant healthy

CAUSE

Rose phyllody (pronounced fil-o-dee) as a result of changes in plant hormone balance or living infectious agents (not yet confirmed in roses)

OPTIMAL CONDITIONS / HABITAT

More often seen in floribundas

Environmental stress - hot weather when flower buds are forming or water stress

If caused by environmental stress, symptoms disappear when stress is eliminated

TREATMENT

Prevention:

Prevent environmental stress; keep plants vigorous with proper care and irrigation

GOOD GUY / BAD GUY?

This garden malady is just a nuisance and usually disappears on its own

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