Problem with Bulbine haworthioides

Sun, 03 Feb 2013 15:32:05 PST

I get this on bulbines sometimes, the leaves look desiccated (and
discolored) but they should not be based on cultural conditions. A critical
factor for short day winter growers like this one is cool nighttime temps.
They should be in the 50s and comfortably down to 40F or a little lower.
These plants cannot metabolize in warm night temps so the food accumulated
during daytime photosynthesis becomes toxic to the plant. Also, relatively
warm and more humid winter conditions can favor botrytis, which can attack
leaves of all sorts of plants.


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