The rare Alstroemeria isabellana from South America is quite different from the common Alstroemeria seen in floral arrangements.  Its radiating sprays of tubular blooms have an eye-catching color combination of pinkish-orange and green.  Each umbel can have 20 or more flowers - possibly the most of any Alstroemeria species.  The plant is pretty in cultivation and not commonly seen for sale.

Alstroemeria isabellana is a perennial species from southern Brazil to Argentina.  It grows during the summer, and can go dormant or partly dormant in winter.  Its arching shoots grow about 2 feet long and are very attractive, looking somewhat like bamboo leaves.  In summer, the flower stalks appear, which are about 18 inches tall.  The vibrant blooms are almost 2 inches long, and open a few at a time, for a long flower show.  Each plant can put up several flower stalks during the summer.  They look surprisingly like the unrelated Phaedranassa.  This is a true species, not a hybrid.

Despite coming from subtropical areas with mild temperatures, it has reportedly taken temperatures in the 90s (35°C).  Still, consider it experimental in consistently hot conditions with warm nights.  The underground rhizomes probably can survive down to 25 degrees F (-4°C) or less if planted deep.  It grows well indoors in a pot, and may stay evergreen if grown inside.  It enjoys rich, well-draining soil that's kept evenly moist.  Mostly-sunny conditions are best, but some afternoon shade might be needed in warmer conditions.

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