Ideal Temperature for Calthaleaf phacelia
Images of Calthaleaf phacelia
Signs of Cold Stress in Calthaleaf phacelia
Symptoms
Calthaleaf phacelia tolerates cool conditions moderately well and flourishes optimally when temperatures exceed 50℉. In colder months, it needs to stay above 40℉. If the temperature drops below 32℉, its foliage might begin to sag. Minor cases allow for recovery, but severe exposure leads to wilting and eventual leaf drop.
Solutions
Remove any parts damaged by frost. Before further cold exposure, cover the plant with materials like non-woven fabric or cloth, and build a windbreak to shield it from chilly gusts.
Signs of Heat Stress in Calthaleaf phacelia
Symptoms
In summer, Calthaleaf phacelia should be maintained below 75℉. When temperatures rise above 85℉, the foliage may lighten in color, leaf tips might dry and shrivel, leaves could 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 net to provide cover. Water the plant in the morning and evening to maintain soil moisture.
