Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Roses > Leaves fall off
Roses > Leaves > Leaves fall off
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Black Spot
Diplocarpon roseae
- Purplish black spots with uneven or feathery edges on leaves
- Leaves turn yellow around spots
- Leaves fall off
- Sometimes reddish purple or black blisters on canes
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Downy Mildew
Peronospera sparsa
- Purplish red spots or blotches on leaves, spots often will not grow past major leaf veins
- Reddish black spots on canes, petioles and other plant parts
- Grey fuzz on underside of leaf when high humidity
- Leaves turn yellow and fall off plant
- Common in cool wet weather
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Rose Streak
Rose Streak Virus
- Symptoms are most common on roses with large clusters of small flowers
- Symptoms may vary in other cultivars
- Leaves turn yellow and may have random dead brown spots
- Leaves fall off in the spring or early summer
- Very susceptible cultivars have brown to black streaks on the canes
