Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Potentilla > Leaves discolored white, yellow or pale green
Potentilla > Leaves > Leaves discolored white, yellow or pale green
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Powdery mildew
Phyllactina guttata
- White, powdery spots or blotches on leaves
- Leaves and stems may be completely covered with white, powdery fungal growth
- Leaves may yellow and drop prematurely
- Young leaves and shoots may be curled and twisted
- Entire shrub may appear gray or discolored
- More information on powdery mildew
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Two-spotted spider mite
Tetranychu surticae
- White to yellow stippling on foliage; leaves can appear off-green
- Heavy infestations will cause leaves to turn white, yellow and ultimately grayish bronze
- Premature leaf drop may occur
- Webbing may be present, especially when heavily infested
- Mites usually appear in late June to August; they are more prevalent in hot, dry weather
- Adult spider mites are small(approximately 1/50 inch long) and are hard to see; they are yellow to dark red with dark spots (need magnification to see)
- More information on two-spotted spider mites
