Swamp Clivia. An extremely rare, newly discovered species, Clivia robusta is very similar to Clivia gardenii with tubular orange flowers and yellow or green highlights. This species tolerates wet conditions by growing a root buttress to hold it out of soggy conditions. Fascinating! Larger than P. gardenii, this is a very easy, fast-growing species that thrives in shady areas outside or as a lovely, evergreen houseplant. Like most Clivia, a cool, dry rest in the winter will ensure good blooming in the spring.
(Amaryllidaceae) Clivia are only found naturally in southern Africa and beloved as houseplants all around the world. Clivia=Lady Clive, Duchess of Northumberland who grew the type species, Clivia nobilis ('nobilis' is also a reference to her nobility). Bloom size plants.
Light: Dappled to full shade outside. Indoors in medium, indirect light.
Water: Average water needs, but it is important that the soil mix be very light. Like other Clivia, a dry, cool period in the winter will contribute to good blooming.
Soil: Very well draining, but rich. A good mix would have high organic matter content and a lot of pummice or perlite. The plants usually grow in pockets of accumulated forest debris along cliffs or rocky areas or even on the limbs of large trees.
Fertilizer: A layer of well-rotted manure or compost and all-purpose, slow-release fertilizer
Hardiness: Zone 10 with protection of mature trees or an overhang. Mature Clivia will tolerate a slight frost, but it damages the plant and opens it up to fungal infection.