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| ELM LEAF BEETLES |
| -THE ELM LEAF BEETLE (scientific name Pyrrhalta luteola), is one of the most serious defoliators of Elm trees in Michigan. Siberian and American Elms are the preferred hosts, but Chinese Elms, Slippery Elms, and other varieties of Elms are also attacked. Aside from the actual physical damage done to your valuable Elm trees, the invasion of the adult beetles into your home, seeking an over wintering site, is a nuisance most homeowners would like to avoid |
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| EUONYMUS SCALE |
| -EUONYMUS SCALE (scientific name Unaspis euonymi) has been a serious pest in the urban landscape throughout Michigan and the rest of the Unites States. It is found in all temperate regions of the world except Australia. This pest was introduced to America from Japan or China.
The primary host of Euonymus Scale include Euonymus, Bittersweet, Holly, Pachysandra, and many others to a lesser degree. Like other types of scale, Euonymus Scale causes severe defoliation, disfigurement, and in many cased the outright death of the host plant. This pest had been increasing in abundance annually in south eastern Michigan due to the widespread use of Euonymus as a landscape plant.
The site preference of this type of scale makes it difficult to detect, thus more dangerous to your landscape. Unlike other scales which attach themselves to needles, leaves, and branches (making them easy to detect) Euonymus Scale prefers the stem close to the ground level, where they are hard to detect. Plants growing closest to buildings of pavement seem to be damaged more that those growing where there is free air circulation. Often, this scale goes unnoticed until a substantial position of the host plant is heavily infested, or even killed. |
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| FIREBLIGHT OF TREES AND SHRUBS |
| -FIREBLIGHT is a bacterial disease (scientific name Erwina amylovora) which affects members of the Rosaceae family. This family of plants includes Apples, Pears, Crab Apples, Plum, Cherry, Chokecherry, Cottoneaster, Quince, Pyrancantha, Hawthorn, Mountain Ash, Rose and Service Berry. Fireblight has also been reported of a Walnut and Persimmon. |
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| GYPSY MOTHS |
| -GYPSY MOTHS, Since its introduction to the northeastern United States from Europe in 1869, the GYPSY MOTH (scientific name Lymantria dispar) had moved slowly but steadily westward, and was first recorded in Michigan in 1954. Placed in an environment devoid of its natural enemies, the Gypsy moth had spread and multiplied rapidly. They can now be found in every country in the lower peninsula.
The Gypsy moth feeds on the foliage of a wide variety of hardwood species. Their preferred foods include Oaks, Birch, Basswood, and Aspen. Once the populations reach epidemic proportions, they will feed on just about all species of deciduous trees, as well as conifers. |
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| PINE NEEDLE SCALE |
| -PINE NEEDLE SCALE (scientific name Phenacaspis pinifoliae) has been increasing in south eastern Michigan at an alarming rate. This is due to the continued overuse of Austrian Pines and Mugho Pines in the landscape, coupled with lack of control be homeowners. In Michigan and the eastern United States, the most frequently damaged host are Scotch, Mugho and Austrian Pines. White and Red pines are also attacked.
Light infestations of Pine Needle Scale generally go unnoticed and cause little damage to the infected plants. As the populations increase, the needles become covered with the white scale insects. Sometimes, when populations are very high, your Pines will appear to be covered with frost or a dusting of snow. |
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