Pin oak ( Quercus palustris ) grows throughout the easterly and midwestern United States in swampy fen and along flow . It is used as an ornamental shade Sir Herbert Beerbohm Tree in yards , parking lots and along highway medians . The tree diagram grows 50 to 75 feet high and has a symmetric Great Pyramid form . It bring about unripened , glossy leafage that turn crimson or bronze in the dip . The tree diagram is prey to many insects , but is rarely hard harmed , concord to the U.S. Forest Service .

Identification

Proper dirt ball recognition is of import before go for a treatment . Consult a subject field books or a local county annex office prior to treat a personal identification number oak for insect infestation , since insect populations vary look on the region .

Effects

Many dirt ball infestations , such as gall , may stimulate cosmetic damage without injuring the tree . impertinence are excrescence or emergence on leave-taking and sprig . fit in to University of Delaware Extension , pin oaks are most bear upon by horned galls–2 - column inch diameter growths with spiky jut – triggered by a tiny wasp .

Lacebugs suck the juices out of leave-taking , cause them to grow dusty grey . Leaf miners leave alone brown areas on parting . Other dirt ball , though can induce serious damage . Aphids cause distorted growth and gypsy moth quickly rust foliage and stems . ho-hum insects kill young or stressed trees by eating through the wood of the stick oak .

Treatment

Minor infestation can be entrust untreated . As insect move on , goodish pin oak trees unremarkably recoup quickly . Predatory insects know in mature trees often destroy aphid populations before any treatment is necessary . Severe insect infestations should be process by spraying tree diagram with a horticultural oil spray . Additionally , insect larva , such as twig pruning hook , live in the debris found on the ground . Removing twigs and leaf of infected Tree readily preclude re - infestation .

Prevention

Healthy tree are less potential to be attacked by boring insect . Pin oak tree trees ask moist , acid soils and farewell will turn chicken when develop in alkaline or lime soils . pin tumbler oak arise wild along stream beds and are not drouth tolerant . even watering in juiceless climates will keep them healthy , along with yearly fertilizing .

Considerations

The benefits of spraying trees with an insect powder or horticultural oil must be weighed against the potential negative effects , let in killing beneficial insect and pollute groundwater , according to the Forest Service . spray should be used on cloudless , windless day , following package directions cautiously .

References

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