Ideal Temperature for Douglas Iris
Images of Douglas Iris
Indications of Cold Conditions for Douglas Iris
Symptoms
Douglas Iris tolerates cold well and flourishes optimally when temperatures exceed 60℉. In winter, it needs to be maintained above 40℉. If the temperature drops below 32℉, while no immediate winter changes might be apparent, a reduction or absence of new growth may occur in spring.
Solutions
In spring, remove any sections that have not produced new shoots.
Indications of Warm Conditions for Douglas Iris
Symptoms
In summer, Douglas Iris should be kept below 75℉. When temperatures surpass 85℉, the plant's foliage might lighten, curl, become prone to sun damage, and in extreme cases, the whole plant could wilt and desiccate.
Solutions
Remove any sun-damaged and dried-out portions. Relocate the plant to a spot offering protection from the midday and afternoon sun, or use a shade fabric to provide cover. Water the plant in the morning and evening to maintain soil moisture.
