Ideal Temperature for Bigleaf hydrangea
Images of Bigleaf hydrangea
Signs of Cold Stress in Bigleaf hydrangea
Symptoms
Bigleaf hydrangea tolerates cold well and flourishes above 60℉. In winter, maintain temperatures above 50℉. If temperatures drop below 40℉, while no immediate winter damage may be apparent, branches can become brittle and dry by spring, preventing new growth.
Solutions
In spring, remove any dead branches that haven't produced new foliage.
Signs of Heat Stress in Bigleaf hydrangea
Symptoms
During summer, Bigleaf hydrangea should be kept below 70℉. When temperatures exceed 80℉, the plant's leaves may lighten, tips might dry and wither, and it becomes more prone to sunburn.
Solutions
Remove any sunburned and dried sections. Relocate the plant to a spot offering protection from midday and afternoon sun, or use a shade cloth. Water the plant in the morning and evening to maintain soil moisture.
