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White patches on leaves

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eds

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I would have guessed sun scorch. Whereabouts in the world are you and what conditions are you growing the plants in?
 

Greg Barnes

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Live in New Zealand. We have just gone through a hot summer and was wondering if the high temperatures would bleach out the chlorophyll?
 

tomkalina

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Could also be a phytotoxic reaction to some sprayed chemical, especially if greenhouse temps were high.
 

Greg Barnes

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No more white leaf has developed I think it might have been caused by heat in during Dec & Jan
 

SlipperKing

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Could also be a phytotoxic reaction to some sprayed chemical, especially if greenhouse temps were high.
I've had this same thing happen with lowii and its hybrids. I think Tom is correct, a strong chemical introduction with an extreme ambient temperature at the same time. The plant typically grows out of it without further harm.
 

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