Ideal Temperature for Showy Penstemon
Images of Showy Penstemon
Signs of Cold Stress in Showy Penstemon
Symptoms
Showy Penstemon exhibits moderate resilience to cold and flourishes optimally when temperatures exceed 65℉. Throughout the winter, it should be maintained above 50℉. Should the temperature drop below 32℉, foliage may begin to sag. Minor instances allow for recovery, but severe cases lead to wilting and eventual leaf drop.
Solutions
Remove any parts damaged by frost. Before subsequent exposure to low temperatures, cover the plant with materials like non-woven fabric or cloth, and erect a windbreak to shield it from cold gusts.
Signs of Heat Stress in Showy Penstemon
Symptoms
In summer, Showy Penstemon ought to be kept below 75℉. When temperatures surpass 85℉, leaf coloration fades, leaf tips might become parched and shriveled, leaves may 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 deploy a shade cloth for cover. Irrigate the plant in the morning and evening to maintain soil moisture.
