Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Roses > Stems swollen
Roses > Stem > Stems swollen
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Rose stem girdler
- Occurs during summer
- Clumps of leaves wilt and turn brown
- Also look for swelling in stem
- Small (1/4 inch long), bullet-shaped, iridescent gold; rarely seen
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Mossy Rose Gall
- First appears in May/June
- Mossy, fern-like spherical growths on stems
- Greenish or reddish
- More information on Mossy Rose Gall
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Spiny Rose Gall
- First appears in May/June
- Spiny, spherical growths on stems
- Greenish during summer, brown during winter
- More information on Spiny Rose Gall
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Crown Gall
Agrobacterium tumefaciens
- Round to irregular overgrowth or tumor at soil line or on roots
- Young galls are light green or white and soft
- Old galls are hard and dark colored or black
- Plant may be stunted, produce few flowers and leaves
- Occasionally galls are seen higher on the stem
- More information on crown gall
