"Ace" wrote in message
news:%xF%c.157684$mD.19181@attbi_s02...
I have a white powdery substance on a lot of my plants. Is that slime
mold?
Thanks


The white powdery substance is powdery mildew, another very common fungal
problem in late season. Lots of different types which are more or less host
specific. The best control is to plant resistant varieties and to maintain
good cultural practices, including proper siting, deep watering, limiting
the use of nitrogen rich fertilizers and mulching to conserve soil moisture.
Clean up and destroy any fallen leaves or debris and with perennials,
infected material that is cut back should not be composted.

Powdery mildews tend to become very resistant to single fungicides other
than sulfur, so alternate if using chemicals, otherwise there are a number
of home remedies that are equally successful in controlling the problem (as
far as that goes). These include Cornell formula (bicarbonite of soda and
water), milk, and neem oil.

pam - gardengal