Apple Scab
An early season fungal disease that affects most crabapple trees in the landscape,
particularly in the last few years.  Only two preventative sprays are necessary
for excellent control.  The health of a chronically infected tree can suffer
greatly from this easily controlled leaf disease.

TREATMENT: Spray Applications

Ash Anthracnose
A fungal disease that causes stunting, distortion and browning of  energing
leaves.  Spraying for control can be difficult due to the size of ash trees.  
Cultural practices like fertilization, mulching and proper pruning can counteract
the effects of anthracnose.

TREATMENT: Spray Applications, Direct Injections

Cytospora Canker
Cytospora Canker is a disease that attacks spruce from the bottom up, causing
needle loss and branch death.  Infected branches elude conspicious amounts of
white resin.  Removing infected limbs slows disease progression.  There is no existing
chemical control.  Fertilization, mulch, and proper watering make a tree less
susceptible to the infection.

Spaeropsis
This fungal disease  is common to stressed pines.  The death of new shoots are an
obvious symptom of infection.  Recommendations vary depending on the
severity of infection, health of tree, and site condition.

TREATMENT:  Spray Applications

Dothistroma
Dosthistroma causes the discoloration and loss of needles to stressed pines,
particularly red and Austrian pine.  A commitment to treatment is necessary
to achieve adequate control.

TREATMENT: Spray Applications

Dutch Elm Disease
The most devistating disease to date, killing nearly every elm tree in the midwest.
Mature elms that remain need to be protected by injections paired with the
prompt removal of diseased limbs (sanitation).

TREATMENT: Injections  

Fire Blight
A damaging bacterial disease affeting many plants, mostly mountain ash, hawthorn,
and apples.  Foliage and small branches turn brown to black and branch cankers
appear sunken.  The lone control method is pruning to remove diseased
limbs and cankers during dormancy.

Oak Anthracnose
This leaf disease is mainly an aesthetic problem whose control is complicated by the
size of the oak tree.  Where the necessary spring sprays to control anthracnose
aren’t feasible, mulching, fertilizing and proper pruning should be done to
maintain the vitality of mature oaks.

TREATMENT: Spray Application or early spring Direct Injections  

Oak Wilt
This disease is caused by a fungus that is lethal to all native oak trees.  The
symptoms, treatment options, and recommendations vary depending on the
species and site conditions.  In white and bur oaks, this disease
can be difficult to diagnose.

TREATMENT: Direct Injection in spring  

Rhizosphaera
This fungal disease is often the cause of death for immature blue spruce.  Control
is difficult and requires a long-term commitment to a treatment program.
Planting less succeptible native conifers reduces the impact of Rhizosphaera.

TREATMENT: Spray Applications