Is there anyway I can safely grow one near a anthracnose infected one? Would
one of the newer blight resistant ones be helpful and if so where does one find
them? We have an incredibly old and beautiful dogwood in the front yard
infected but I would like to get another growing in the backyard some time
before the day I will sadly have to remove the tree in the front. Part of the
reason we bought this house was that tree... I actually cued the realtor in to
point out "that lovely dogwood out there" he thought I was nuts till my husband
looked and voiced his pleasure lol. Dogwoods are a favorite of mine as well as
hubby's.Don't tell me to cut it down because my battle is futile, I know it is
but this tree is worth trying to prolong it's life; it's that pretty all
seasons, great shape and still has tons of blossoms come spring and the birds
still flock to it for the berries.
Zone 5 CT
On Sat, 15 Jan 2005 14:07:54 +0000, GrampysGurl wrote:
I would tend to discourage you against planting a new Cornus florida. I
fear that in the end you will spend a good deal of money with poor
results. You may have a fighting chance with Cornus kousa (Korean Dogwood)
X Cornus florida hybrids, as they tend to have more of a resistance to
anthracnose and powdery mildew, but there are no guarantees. Here's a nice
factsheet from the university of Rhode Island on the subject:
As far as your infected Cornus florida, you maybe able to prolong the
inevitable with general sanitation and fungicides. Here's a nice factsheet
on dogwood anthracnose Washington State University Master Gardeners:
Soory for the huge link, the site uses frames. You can got to the root of
the site here:
Click Ornamentals >> Dogwood
Another good site is :
:::sigh::: I thought that would be the answer I would get.... Thank you for all
the information, I will check it out later this afternoon. I do spray the tree
as often as I possibly can get around to it and I do rake and remove before
every mowing. It's just heartbreaking to see what happens to these lovely
trees. I'm not sure what I will replace it with, maybe a magnolia.... I love
the form of my tree, it branches out close to the ground but has a huge open
spread. Thank you again.
Zone 5 CT
On Sun, 16 Jan 2005 14:18:14 +0000, GrampysGurl wrote:
Don't feel like you have to grab the saw just yet 80) Anthracnose can be
'controlled' to the most part, as long as this tree is not overly
infected. If the tree is of substantial size, if the tree does not have
substantial damage, then you have a rather fair chance of pulling this
tree back from death. Generally I wouldn't recommend a massive spray
campaign due to it's cost and time commitment, but seeing that you have an
emotional attachment to the tree, this may be alright with you.
Before you grab the spray can, try to assess the over-all health of the
tree. If the tree is generally in good health, the over-all damage is low,
then it's time to start walking. It's quite futile to try to manage your
fungus outbreak if there are other infected trees in the neighborhood that
are not being treated. The spores are blowing in the wind sure, but if you
have an anthracnose factory three doors down that isn't being managed,
your attempts to manage your outbreak will be all for not.
If you find more occurrences of anthracnose after peeking over the
neighbors fences, then it might be more adventagous to plant resistant
trees and take out the infected ones.
Good luck to you and your tree.
Here in city areas of Zone 5, Cornus kousa is a beautiful replacement which
blooms a month later than florida. A couple of years ago, I planted one of the
Rutgers hybrids with pink flowers. It hasn't done much yet, but it is certainly
Central NY, Zone 5a, Sunset Zone 40
"A tree never hits an automobile except in self defense." - Woody Allen
All Cornus florida are infected with anthracnose. It exists as a constant
background pathogen-- the problem is when certain enviormental/pathological
events trigger a bloom and rampant attack on a geographic area, at which
time the tree (usually already stressed) begins to succumb. Here in the
Midatlantic region, naturally occuring as well as nursery stock Cornus
florida are being decimated by the disease.
Ways to mitigate include:
-proper irrigation: watering during periods of drought
-proper soil pH: dogwoods thrive in MAWD (moist, acidic, well-drained) soil
high in organic content. Studies have shown that higher pH levels reduce the
likelihood of disease outbreaks.
-good nutrition: a thin layer of microbial-rich compost and composted cow
manure will do wonders.
Vigilantly maintain the integrity of the tree's rootzone-- dogwoods have
their rootsystems quite close to the surface, and they can't tolerate much
if any disturbance (no digging bulbs, for example).
Keep infected leaf litter swept up as well-- don't compost infected leaves.
David J. Bockman, Fairfax, VA (USDA Hardiness Zone 7)
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