Ideal Temperature for Hart's-tongue fern
Images of Hart's-tongue fern
Signs of Cold Stress in Hart's-tongue fern
Symptoms
Hart's-tongue fern tolerates cold well and flourishes optimally when temperatures exceed 55℉. In winter, it needs to stay above 50℉. If the temperature drops below 32℉, while no immediate winter changes might be apparent, spring may see reduced or absent new growth.
Solutions
In spring, remove any sections that have not produced new shoots.
Signs of Heat Stress in Hart's-tongue fern
Symptoms
In summer, Hart's-tongue fern should be maintained below 77℉. When temperatures surpass 86℉, the plant's foliage might lighten, tend to curl, and become more vulnerable to sun damage.
Solutions
Remove any parts that are scorched and dried. Relocate the plant to a spot offering protection from the midday and afternoon sun, or use a shade fabric. Water the plant in the morning and evening to maintain soil moisture.
