GREEN TIPS
Department of Horticulture - Michigan State University

LANDSCAPE MANAGEMENT CALENDAR
JUNE: The First Month of Summer
Planting

Plant balled and burlapped, balled and potted, and container-grown ornamental landscape plants.

Pruning

Thinning of broadleaf and narrowleaf evergreens may be done when damaging low temperatures (below freezing) and drying winds are no longer a threat. Head back and lightly shape evergreens to remove dead and broken branches and brown, winter-injured foliage. The new growth on the plant will help you identify healthy plant parts.

Watering

Irrigate newly planted or established ornamentals any time there is less than 1 inch of weekly rainfall and plants are actively growing. Apply water at the rate of 1 quart per square foot of planting area on poorly drained soils. On well drained soils, use a half-gallon of water per square foot.

Plant protection

For newly planted ornamentals, spread a 2- to 3-inch layer of mulch over the soil in the bed or around trees.

Pest control

Warning! Not all formulations of all recommended pesticides are labeled for all suggested uses. Buy formulations that are labeled for the specific pest problem. Follow all pesticide label directions and precautions.

When a particular pest becomes active depends on the weather conditions in your area. The pest management guide gives general guidelines for a broad geographic area. Depending on your location, a particular pest may appear early or late within the month(s) in which the pest is listed.
 
 

Pest Common Hosts Controls
Insects
adelgids Douglas fir Diazinon, lindane, malathion, Sevin
aphids most ornamentals Diazinon, Orthene, malathion, Sevin
beetles most ornamentals methoxychlor, Sevin
borers birch, dogwood, lilac, mountain ash, oak, poplar, willow lindane
lacebugs amelanchier, azalea, hackberry, mountain ash, oak, pieris, rhododendron, sycamore Diazinon, malathion, Orthene
leaf miners arborvitae, birch, hawthorn, holly, spruce Diazinon, Orthene, Sevin
mealybugs taxus malathion, Orthene, superior oil
mites most ornamentals malathion
plant bugs & leafhoppers honey locust malathion, Orthene, Sevin
scales ash, euonymus, fruit trees, hackberry, hawthorn, hemlock, juniper, lilac, linden, maple, mountain ash, oak, pachysandra, pine, poplar, rose, spruce, willow Orthene, malathion, Sevin, superior oil
weevils arborvitae, azalea, euonymus, hemlock, pine, rhododendron, taxus Orthene
Diseases
anthracnose ash, maple, oak, sycamore Cleary's 3336, Captan
bacterial blight English ivy, lilac fixed copper
black knot fruiting & ornamental plum Cleary's 3336, Captan
Botrytis blight rose Cleary's 3336, Captan
canker & rot most ornamentals Prune out infected plant parts.
crown gall euonymus, rose Destroy infected plants.
fire blight cotoneaster, crabapple, fruit trees, hawthorn, mountain ash, pyracantha Prune out infected plant parts.
leaf spot most ornamentals fixed copper
powdery mildew most ornamentals Cleary's 3336, sulfur
rust apple, crabapple, hawthorn, juniper, rose Ferbam,
scab crabapple, fruit trees, mountain ash, pyracantha Cleary's 3336, Captan, Daconil
twig blight juniper Cleary's 3336
Verticillium wilt most ornamentals No effective chemical or cultural control
wetwood elm, maple no effective chemical or cultural control
Weeds
Direct spray on most actively growing weeds most ornamentals Kleenup

Source: MSU Extension Bulletin E-1947