hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: powdery mildew on crepe myrtle

Marge, if personal experience is what impresses you most, I'll add mine with
milk.  I have numerous miniature roses planted in containers around my
breezeway and beside the driveway.  Each week when we shop, we get
a gallon of milk, but usually have about a quarter of it left by the next 
week.  We fill the container of leftover milk with water - this will be 
a 1 to 4 ratio - maybe 1 to 5.  We just pour the watered-down solution over
the roses.  Haven't had a speck of mildew or black spot since we began
to do this several years ago.  Slugs are about the only problem we have
with the roses.  

In a message dated 10/12/2005 12:49:42 AM Eastern Daylight Time, 
mtalt@hort.net writes:
"Milk's fungicidal powers were discovered by Wagner Bettiol of the
environmental laboratory of Embrapa, the Brazilian Agricultural
Research Corporation, n Jaguariuna, north of Sao Paulo. Bettiol, who
was looking for cheap ways to control plant pests, observed that
byproducts from milk-processing factories killed powdery mildew on
courgettes. So he decided to simply spray fresh milk on the plants to
see if it had the same effect. To his surprise, he found that it did.
In fact, spraying heavily infected plants twice a week with a mixture
of one part cow's milk to nine parts water was at least as good at
stopping mildew as the chemical fungicides fenarimol and benomyl,
Bettiol discovered."

another saved post:

Some people have compared different dilutions and found that
the 1:9 often necessitated a second or third treatment, but the 1:3
or 1:4
took care of the fungus first time around.  

To sign-off this list, send email to majordomo@hort.net with the

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement