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Bicolor African Violets Turning White: Temperature, Soil pH, and Repotting

Joe's two bicolor (red/white) African violets shifted to nearly all-white blooms after fall deadheading. Healthy plants, east/west windows, fertilized every watering, bottom-watered by weight, Bakersfield CA, 70°F day, cooler nights.

Variegation Factors

Warmth: Variegates lose color in heat (not your case)
Soil pH: Pink/red variegates need slightly alkaline soil
Repotting: Judge recommends 2x yearly for nutrient refresh (perlite/vermiculite mixes deplete)

Recommendation

Try twice-yearly repotting. Monitor color return. Excellent care otherwise.

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