SOPHORA DISEASE PROBLEMS
Cankers caused by Fusarium lateritium will be two inches Frost injury may give both fungi an entrance into the Twig blight or dieback is caused by either Nectria Powdery mildew may form a white coating on the leaves. or less across, have raised ... [... more]
Michigan State University Extension |
HAMAMELIS INSECT PROBLEMS
Saddled prominent is a green to brown or yellow Witchhazel leaf gall aphid causes galls 1/2 inch long. The galls are green, sometimes with reddish tips, and are The spiny witchhazel gall aphid causes galls 3/4 inch long Eastern tent caterpillar ... [... more]
Michigan State University Extension |
VINCA DISEASE PROBLEMS
Blight causes brown or black spots which extend inward Space plants farther apart in subsequent plantings. Remove infected plants. Canker and dieback cause the shoot tip to become dark Several fungi cause leaf spots on periwinkle. Root rots cause ... [... more]
Michigan State University Extension |
ELEAGNUS INSECT PROBLEMS
Few insects bother Eleagnus. The most likely insect Use dormant sprays during the early spring. problem may be an infestation of one of the scale insects. [... more]
Michigan State University Extension |
Aphelandra squarrosa - Zebra Plant
Comments: Zebra Plant gets its name from white stripes on Bright light but no direct sunlight is preferred. Water Forcing Zebra Plant into bloom requires a well lit area. Zebra Plant has a winter rest period. Propagation: Propagation is by stem ... [... more]
Michigan State University Extension |
Plant Bug and Leafhopper Injury on Honeylocust
Plant bugs and leafhoppers are small green insects that The insects overwinter as eggs that were laid in woody July. Only one generation occurs each year. The injury becomes most apparent by the end of June or often occur together on ... [... more]
Michigan State University Extension |
VIBURNUM DISEASE PROBLEMS
Bacterial leaf spot causes round, water-soaked spots on Bacterial crown gall forms galls on the lower stems. There is no chemical control. Remove infected plants and Shoot blight causes grayish to brown decayed spots on A number of fungi cause ... [... more]
Michigan State University Extension |
Parthenocissus tricuspidata--Boston Ivy
Hardiness Zones: 4 to 6 Height: 4 in Spread: variable Comments: This vine can reach a height or spread exceeding References for Cultivars: Walters Gardens 1999, Ray Wiegand's Nursery 1999, Bailey Nurseries 1997, Weston Nurseries 1999, Monrovia ... [... more]
Michigan State University Extension |
PIERIS INSECT PROBLEMS
Lace bug causes the leaves to turn yellowish to gray. Mites discolor the leaves. When heavy infestations occur, fine webbing is visible. [... more]
Michigan State University Extension |
Magnolia x soulangiana--Saucer Magnolia
Comments: Transplant Saucer Magnolia in the spring, just They open in early spring to produce large, white flowers Cultivars: Some of the cultivars are Gresham Hybrids Monrovia Nursery Company 1997, Weston Nurseries 1999, Princeton Nurseries ... [... more]
Michigan State University Extension |
Quercus macrocarpa--Burr Oak
Comments: An impressive crown (Vis. 1) with a massive trunk, (Vis. 2) stout branches and corky ridges on stems makes Burr Oak a picturesque specimen. The tree adapts to various soils where other oaks fail. [... more]
Michigan State University Extension |
Matteuccia struthiopteris (M. pennsylvanica)--Ostrich Fern
Height: 6 ft Spread: 24 in Comments: This is an elegant fern, that will grow in sun Propagation: Division or shade but does require a moist soil, especially if grown in the sun. It may be a suitable choice for wet areas. The large leaves (Vis. 1) ... [... more]
Michigan State University Extension |
