Save your trees before it’s too late Are you sick of non-stop pest, fungi and other uncontrollable elements in your back and front yard trees? Most of our habitats in Bonners Ferry express its natural beauty, it glows and it stands out even without the help of landscaping, trimming, reshaping, etc. But it is just that some of our little creatures are trying to destroy these trees.

1. Top 10 were on the list of common diseases on trees
Save your trees before it’s too late
Are you sick of non-stop pest, fungi and other uncontrollable elements in your back and front yard trees?
Most of our habitats in Bonners Ferry express its natural beauty, it glows and it stands out even without the help of landscaping,
trimming, reshaping, etc. But it is just that some of our little creatures are trying to destroy these trees.
In this case, we have to learn 1.) Types of the diseases that usually attack our trees 2.) Assess if it can be a DIY project 3.) Do
we have any idea with regards to the right timing or ideal season of when to treat our trees? 4.) If not, who will and how to
eradicate those problems.
Top 10 were on the list of common diseases on trees:
1. Anthracnose
Anthracnose is a fungal disease that tends to attack plants in the spring when the weather is cooland wet, primarily on leaves
and twigs. The fungioverwinter in dead twigs and fallen leaves. Cool, rainy weather creates perfect conditions for the spores to
spread. Dry and hot weather stop the progression of the disease that may begin again once the weather conditions become
optimal. The problem can be cyclic but is rarely fatal. Anthracnose fungus infects many deciduous and evergreen trees and
shrubs, as wellas fruits, vegetables and grass. Anthracnose is noticeable along the leaves and the veins as small lesions. These
dark, sunken lesions may also be found on stems, flowers and fruits. In order to distinguish between anthracnose and other leaf
spot diseases, you should carefully examine the undersides of leaves for a number of small tan to brown dots, about the size of a
pin head
Control: For management of sycamore anthracnose, begin foliar applications of fungicides two weeks before bud break.
Alternatively, trunk inject with a systemic fungicide. The most effective active ingredient is thiabendazole. In the case of
dogwood anthracnose, foliar applications must begin at bud break and continue all through the growing season to protect the
tree. For dogwood anthracnose, propiconazole is an effective fungicide. Good sanitation practices can also help reduce disease
inoculum.
2. Apple scab
Apple scab is an early season leaf disease affecting crabapples. Some crabapple cultivars are more resistant than others.
Scab-like lesions form on the leaves that eventually cause premature defoliation of infected trees.Control: While mostly
aesthetic, homeowners may find apple scab objectionable. It can be managed with fungicide applications with active
ingredients, such as fenarimol, beginning at bud break.
Cedar rusts
Cedar rusts are common foliar diseases of rosaceous plants, such as hawthorn and crabapple. As with apple scab, some
cultivars and species are more susceptible than others. Rust diseases require junipers as an alternate host. Orange or rust-
colored leaf spots form on hawthorn and crabapples in the spring. Twig cankers can develop and cause dieback. Spore-
producing structures form on the juniper branches.
Control: The disease can be managed with fungicide applications on the deciduous hosts beginning at bud break or when
orange spore masses develop on junipers. An active ingredient for controlling rust diseases is triadimefon. Prune out rust
galls on junipers when noted.
4. Diplodia tip blight
Diplodia is a common disease of Austrian and other pines. The disease initially develops at the base of the tree and
progresses upwards. Candles and needles begin to expand before becoming infected and dying. Key symptoms include dead
shoots with needles half elongated, lots of resin and witches brooms’ dead shoots. Black fruiting structures are present
between needles and on cones.
Control: Management includes good sanitation, pruning and applying fungicides beginning at bud swell. An effective
active ingredient for control is thiophanate-methyl.
5. Dothistroma needle blight of pines
Dothistroma needle blight is a fungal disease that causes a premature defoliation in mature trees and sever stunting and
death of young trees. It can be found in more than 35 pine species and hybrids throughout North America. However, it is not
found in the western Great Plains or central Rocky Mountains.

2. Control: For management, begin applications of a protective fungicide at bud break. Products with the active ingredient
combination copper hydroxide and mancozeb are known to be most effective. Pruning out severely infected branches can also
help in managing the disease.
6. Lethal yellowof palm
Lethal yellowing is an important disease of palms in Florida and Texas. It is typically found in Canary Island date palm,
coconut palm, date palm and other species, though native palms are usually not affected. Lethal yellowing is caused by a
bacteria-like organism called a phytoplasma and is transmitted by a planthopper insect.
Control: Preventative and therapeutic treatments with an antibiotic injected into the trunk can help manage the disease. An
effective active ingredient is oxytetracycline hydrochloride. Removal of moderately infected plants and use of resistance species
is also recommended. Insecticides for control of vectors have proven ineffective in managing disease spread.
7. Oak Wilt
Oak wilt is a systemic fungal disease that results in tree death. The disease can be found in more than 20 oak species in
Minnesota, Pennsylvania, South Carolina, Texas and recently New York. The disease is transmitted by infected beetles and
through root grafts.
Control: Trees in the white oak family can be treated therapeutically. Trees in the red oak family cannot. For prevention, inject
trees with a systemic fungicide, such as propiconazole, during the growing season.
8. Powdery mildew
Powdery mildew is caused by a number of fungal pathogens that grow superficially on the plant surface producing white
mycelia (fungal threads) and spores. It can be found in a host of trees throughout North America. Leaf, flower and shoot
distortion and stunting occur when the fungus attacks young tissue. As the level of infection increases, tissue becomes dried and
brown. Premature defoliation may also occur. On susceptible rose varieties, flower production may be inhibited.
Control: For management, select resistant varieties, avoid planting in shaded areas and over-crowding and practice good
sanitation. Begin fungicide applications when symptoms are first noted. An effective active ingredient for controlis
triadimefon.
9. Photinia Leaf Spot
Photinia leaf spot is mainly found in the South and is an important defoliator of red tip photinia, Indian hawthorn, loquat and
some pear cultivars. Infections by the fungal pathogen begin as small circular, dark red spots on leaves, stems and fruit.
Spots coalesce into large blotches with gray centers.
Control: Management strategies include purchasing disease-free plants, sanitation, planting in sunny areas and fungicide
applications. Begin treatment at budbreak and repeat applications until most of the leaves have matured. For very
susceptible species such as photinia, additional fungicide applications may be necessary for good control. Applications of
products with the active ingredient propiconazole are the most effective. Planting resistant varieties and species can also
help with control.10. Thousand canker disease
Thousand canker disease affects walnuts. It’s mainly found in the Western United States; although, black walnuts in
Tennessee were found to be infected last summer. It is vectored by walnut twig beetles and forms small cankers around their
galleries. Over time these small cankers coalesce to girdle branches and stems. Trees can be infested for years before
showing symptoms. Foliage in the upper branches of declining trees wilts and become yellow.
Control: Once a tree begins to decline, it is often dead within several years. At present there are no chemical management
options for control.
Knowing some of the common diseases that might attack our trees in Bonners Ferry, from here we can start thinking of that this
is not a just a DIY project. It seems that we need to seek advice from professionals. This might cause us stress. Or might do
wrong procedures that can damage or worst case destroy the living things. So to be stress-free, why don’t we hire best for Tree
Disease Control?
Trees have a perfect season in which to do work. Considering the time frame in which we can benefit best from the tree, an
American tree services in Bonners Ferry is available to help you, in which they are knowledgeable of when to perform
treatment for your trees and giving appropriate and safe-free treatment that will not bring harm to your trees, surroundings and
to your children.
Northern Lake Tree Services is the best to call dealing with these repetitive problems and tree care. With good customer care
and great staff, low-cost but with good quality of work. It won’t cost you that much to eradicate your problems.
Source: http://northernlakestreeservice.net/top-10-were-on-the-list-of-common-diseases-on-trees/