University of Illinois Extension

Medium Trees

ALDER

Selection Info Some Common Diseases Some Common Insects and Insect-related

Tolerates moist shady conditions.
"Cones"
40+ feet tall.

Wood rot
Canker-die back
Catkin deformity-leaf spot

Woolly Alder Aphid
Leaf Miner

ARBORVITAE

Selection Info Some Common Diseases Some Common Insects and Insect-related

Shrubs & trees, yellow foliage, variety often used for screening, "cones," 18 to 35 feet tall.
Moist well-drained soil.

Cankers
Drowning
Scorch
Winter Injury

Mites
Bagworms

BIRCH

Selection Info Some Common Diseases Some Common Insects and Insect-related

Like cool, moist acidic soils. White -grey- paper - canoe - river species. Buy resistant variety. (Heritage is creamy white, white spire is white, both hybrids of river) river is borer resistant, depending on species - 40 to 120 feet tall possible.

Chlorosis
Root rot
Canker
Scorch

Leaf Miner
Bronze Birch Borer
Scale
Sapsucker damage

JUNIPERS

Selection Info Some Common Diseases Some Common Insects and Insect-related

Blue to green to yellow tip foliage, ground covers, shrubs, trees (including columnar forms) blueberry like fruit (used to flavor gin), moist, well-drained soils.

Phomopsis
Twig Blight
Cedar rust (Susceptible varieties)
Winter injury
Root rot
Wood rot

Mites
Scale