The Japanese red maple (Acer palmatum atropurpureum) is a slow-growing, 30-ft ornamental with twisting branches, deep purplish-green summer leaves, and brilliant fall color. Generally hardy, it faces a few issues.
More susceptible than other small trees (per University of Missouri). Caused by hot, dry weather followed by drying winds, or sudden intense sun after cloudy periods. Leaves lose water faster than roots replace it. Symptoms: yellow spots/streaks on leaves. Prevention: deep watering, wind protection, mulch, and spring potash fertilizer.
Thin bark is easily damaged by garden tools, creating entry points for fungi and verticillium wilt (often fatal). Embedded bark (included bark) occurs when bark traps between branch and trunk, weakening attachment and causing future breakage. Prune to eliminate embedded bark and rubbing branches.
Relatively pest-resistant, but aphids love these trees. They don't threaten health but make foliage unsightly and secrete sticky honeydew that attracts other insects. Control with insecticidal spray if needed.
Phyllosticta Leaf Spot on Japanese Maple: Cosmetic Late-Season Fungus
Wax Scale on Japanese Maple: Identifying the White Domes and Timing Your Treatment
Weed Whacker Damage to Japanese Maple: Grafting Wax and Borer Protection
Japanese Red Maple Propagation: Grafting vs. Cuttings
Japanese Red Lace Maple Not Leafing Out After Harsh Winter
Transplanting a 10–15 Year Old Japanese Red Maple Without a Tree Spade
Diagnosing Browning Leaves on a Japanese Dwarf Red Maple
Reviving a Transplanted Japanese Red Maple in Shock
Japanese Maple Freeze Damage: Spring and Fall Fertilizing
Yellow Fungus on Japanese Maple Branches: Likely Wood Rot, Not Surface Fungus
Japanese Maple Tree Diseases: Identification and Treatment
Diseases of the Japanese Red Maple Tree
Japanese Maple 'Ever Red': Weeping Dwarf with Persistent Deep Red Foliage
Copyright © www.100flowers.win Botanic Garden All Rights Reserved