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Summer Gardening Tips
Along with summer time comes high humidity. High
humidity can cause a lot of problems with the plants in your
garden and around your house. One of the simple things you can
do is don't water just before dark. Make sure your plants are
nice and dry when you tuck them in for the night and you can cut
down of the chance fungus being a problem.
One of the more common fungi that I get asked
about a lot is powdery mildew. This appears as a white film on
the leaves of ornamental plants. Dogwoods and Purple Sandcherry
are often the victim of powdery mildew. Powdery mildew isn't
extremely harmful to the plants, it's just that the foliage is
damaged, and little growing takes place once it sets in. Your
local garden center will have a general fungicide you can spray
if you'd like to try and control it. Usually once the plant
defoliates in the fall the plant is back to normal.
Summer gardening tips . . .
If you have Perennial Rye Grass in your lawn, and
you probably do if you're in the north, you must be careful not
to leave your grass wet at night. There is a fungus known as
Pythium Blight that appears in very humid conditions. This
fungus attacks and kills perennial rye grasses. Here in the
north most of our lawns are a blend of fescues, perennial ryes,
and Kentucky Blue Grass.
If you have problems with pythium blight you will
lose the perennial rye grass in large areas of your lawn, and
even though the other grasses will still be there and fill in,
your lawn will have areas that are much darker green than the
rest of the lawn because you will then have concentrations of
Kentucky Blue grass.
You can see this fungus in the early morning. It
looks like white cotton candy laying on top of your lawn. It
usually appears along walks and driveways where the soil is the
wet if you have been watering. To prevent pythium blight water
as early in the day as possible.
Summer gardening tips . . .
Another nasty little blight that likes summer
time is Fire Blight. Fire Blight attacks ornamentals, especially
Apple trees, Crabapple trees, Cotoneasters, and Pyracantha. You
know you have Fire Blight when a branch on one of your plants
dies and turns almost red. The leaves usually hang on but turn
reddish brown. The damage usually starts out near the end of the
branch and works it's way toward the main stem of the plant.
There is little you can do except prune out the affected branch,
cutting it as far back as possible.
Fire Blight is very contagious to plants so you
should burn the branches you prune out. You should also dip or
wash your pruning shears in rubbing alcohol after each cut to
keep from spreading this deadly fungus.
Summer gardening tips . . .
Unfortunately, I've got one more summer time
culprit to warn you about. It's a handy little fungus that grows
in mulch. Actually there are all kinds of fungi that tend to
grow in mulches, and most of them are really disgusting looking.
But this little gem is unique in the fact that as it grows it
tends to swell. Then somehow it manages to explode, and it will
spatter your house with tiny brown specs. The experts have
appropriately named this one “Shotgun Fungus”. Isn't that a cute
name?
These tiny little brown specs will fly as high as
eight feet into the air, and once they stick to your house or
windows, they stick like glue. I know that right now there are
people hollering across the house at their spouse, “Hey,
remember those brown specs all over the house? I know what they
are. It's from the mulch!” Tell me I'm wrong, but I know I'm
not.
A lot of people are victims of this nasty little
fungus, but they don't know it. All they know is that there are
tiny brown specs on the house that look like paint. So far they
have blamed everything from spiders to aliens.
There's not a lot you can do to prevent this fungus. I have
found that if you keep the mulch loose so air can circulate it
is less likely to grow fungi. Don't just keep adding layer after
layer to the mulch around your house. You should skip at least
every other year and just loosen the mulch you already have
down. If you loosen it and then rake it flat it will look like
you've just mulched. Mulch is great, just don't let it get
packed down hard. Loosen it up at least once a year. |