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Top 20 Tree & Shrub Problems in the Pacific NorthwestSpider MitesVery tiny, closely related to spiders, feed on arborvitae, conifers, roses, perennials, and euonymus. They suck out plant sap and chlorophyll resulting in foliage looking, speckled, yellow, or bronzed cast. Leaves may drop prematurely. Root WeevilAdults feed on foliage of over 100 plant species including: perennials, strawberries, salal, Oregon grape, azaleas, rhododendrons, viburnum davidii, yew and spruce. Larvae feed on roots killing small plants. Leaf Rollers & Tent CaterpillarsLarvae feeding on foliage of fruit ornamental trees in the spring and summer, causing defoliation. AphidsSucking juices of shade trees; oak, maple, birch, beech, elm, tulip trees, results in defoliation and drips sticky honeydew. Insect BorersMany different species attacking weak or dying trees, feed under bark or in sap wood of trees. ScaleHard or soft bodied insects feed on bark or leaves by sucking plant sap, infested trees drip sticky honeydew. Codling MothWorms in fruit of apple and pear trees. Brown Blossom BlightDisease on fruit and ornamental cherry and plum trees causing leaf and twig blight. Dogwood AnthracnoseDisease, causing leaf and twig blight. Phytophthora Root RotFatal disease on rhododendrons and Port Orford cedar trees and many other species of plants. MildewWhite powdery foliage disease on roses, deciduous azaleas, crabapple trees, euonymus. Black Spot & RustCommon leaf diseases of roses resulting poor plant health. ArmillariaOften fatal root rot disease of oak and dogwood trees and many other plant species. Verticillium WiltWilt disease causing death of maple, redbud, and ash trees. ScabWilt disease causing death of maple, redbud, and ash trees. Poor Soil ConditionsTop soil removed, plants growing in heavy clay or subsoil, poor drainage. Results in poor root growth, decline in plant health and often death. Poor Watering PracticesEither too much causing root rots or too little resulting in leaf burn, poor growth or death. Improper PlantingRoot systems planted too deep, major cause of plant decline and death. Improper PruningTtopping, over thinning, lion’s tailing, resulting in ugly plants hazardous trees and plant death. Nutrient DeficiencyFoliage problems caused by poor soil and lack of nutrients. The SolutionCollier Arbor Care’s plant health care program provides the most holistic and state of the art approach to tree and shrub health care available. This program cares for the entire plant from the root to shoots. Our customized program of regularly scheduled inspections enables us to diagnose and treat problems before they damage plants. We carefully select environmentally friendly materials when targeted treatments are necessary. After each inspection, we provide a report of our findings, treatments and recommendations. Fruit tree programs and optional treatments, such as fertilizing and pruning to promote vigorous healthy plants, are also available. |
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