Ideal Temperature for Slender St. John's wort
Images of Slender St. John's wort
Signs of Cold Stress in Slender St. John's wort
Symptoms
Slender St. John's wort tolerates cold well, but winter temperatures should stay above 32℉. If temperatures fall below this, while no immediate winter damage may be apparent, reduced or absent sprouting could occur in spring.
Solutions
In spring, remove any sections that have not sprouted.
Signs of Heat Stress in Slender St. John's wort
Symptoms
Slender St. John's wort does not handle high temperatures well. When temperatures exceed 77℉, its development ceases, and it becomes more prone to decay.
Solutions
Remove any sun-scorched and desiccated portions. Relocate the plant to a spot offering protection from intense midday and afternoon sun, or use a shade cloth. Water the plant in the morning and evening to maintain soil moisture.
