Ideal Temperature for Shrubby St. John's wort
Images of Shrubby St. John's wort
Signs of Cold Stress in Shrubby St. John's wort
Symptoms
Shrubby St. John's wort tolerates cold well and flourishes when temperatures are above 65℉. In winter, it needs to stay above 60℉. If temperatures drop below 50℉, even if no immediate winter damage is visible, branches might become brittle and dry in spring, with no new growth appearing.
Solutions
In spring, remove any dead branches that haven't produced new foliage.
Signs of Heat Stress in Shrubby St. John's wort
Symptoms
In summer, Shrubby St. John's wort should be maintained below 75℉. When temperatures surpass 80℉, the plant's leaves may lighten in hue, tips might dry and shrivel, and the plant becomes more prone to sun damage.
Solutions
Remove any sun-damaged 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.
