Answer: Hardy Gloxinia is Incarvillea delavayi, and can be grown outdoors in zones 6-10 in full sun or light shade. (The more tender Gloxinia is traditionally grown indoors as a houseplant.) Incarvillea delavayi requires humus rich, well draining soil. Keep the soil moist during the growing season, and remove faded blooms to encourage additional flowers. The only absolute requirement of Hardy Gloxinia is excellent soil drainage during the winter months. The plants will grow 1 1/2 - 2 feet tall and about 12 inches wide. Hope this helps!
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