Ideal Temperature for American holly
Images of American holly
Signs of Cold Stress in American holly
Symptoms
American holly tolerates cold moderately well and flourishes optimally when temperatures exceed 60℉. In winter, it needs to be maintained above 20℉. If the temperature drops below , its foliage might begin to sag. Minor cases allow recovery, but severe instances lead to wilting and eventual leaf drop.
Solutions
Remove any parts damaged by frost. Before subsequent cold spells, cover the plant with materials like non-woven fabric or burlap, and erect a windbreak to shield it from harsh winds.
Signs of Heat Stress in American holly
Symptoms
In summer, American holly should be kept below 75℉. When temperatures surpass 95℉, the leaves' hue lightens, tips may dry and shrivel, foliage might curl, and the plant becomes more prone to sun damage.
Solutions
Prune off any sun-scorched and desiccated sections. Relocate the plant to a spot offering protection from the midday and afternoon sun, or use a shade cloth for cover. Water the plant in the morning and evening to maintain soil moisture.
