[H. paramutabilis x syriacus] Dark green maple-like leaves on woody shrubs blooming from July to frost with pure white flowers with wide carmine eye. Makes a handsome full shrub (with ambitions to become a hibiscus tree as stems are typically not damaged even in sub-zero winters) in our climate with longest blooming season of any caulescent Hibiscus--a larger stature and far longer bloom season than its "Rose of Sharon" parent.
Some of you grow only indoors, some only in terrariums; many of you have hobby greenhouses; while a growing number of customers live in subtropical or tropical areas of the world. These brief codes are an attempt to suggest whether or not a particular plant will do well in your particular conditions.
If an entry has the cluster HP CGH, this means normal house plant culture will be successful if the plant is given a cool CGH moist location; however if the entry has the cluster CGH HP, you would interpret this to suggest that while Cool Greenhouse conditions are needed for total success with this plant, House Plant conditions will be adequate, while not ideal. If the cluster is HH CGH you would interpret this to mean that while in Zone 8 or below this will be winter hardy outdoor, further north it will need considerable mulch, a cold frame, or a Cool Greenhouse to thrive. And so on.×