Feathery Cassia, Silver Cassia
Scientific Name: Senna artemisioides (Gaud. ex DC.) Randell
Synonym: Cassia artemisioides
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Recommended Temperature Zone:|
Frost Tolerance: Hardy to 15°F (-10°C), but winter frost might eliminate the bloom
Heat Tolerance: Excellent
Sun Exposure: Full sun to light shade
Growth Habits: Evergreen shrub, fast growing to 6 feet tall (1.8 m), 6 feet wide; pinnate leaves, 0.8 to 1.6 inches long (2-4 cm), 4 to 8 pairs of cylindrical gray-green leaflets, 0.4 to 1.6 inches long (1-4 cm)
Watering Needs: Little to moderate water, good drainage
Propagation: Seeds (needs boiling water treatment), cuttings
The elegant gray foliage, bright yellow flowers and low-maintenance makes this cassia a common species for residential and commercial properties. It is also a good choice for foundation planting.
Fertilize once a year. Prune after flowering to eliminate the seed pods. Overwatering makes the shrub chlorotic (the leaves turn yellowish). It is also sensitive to Texas root rot.
The Feathery Cassia has lightly scented yellow 0.5 to 0.75 inch wide (1.2-1.8 cm) flowers, in small clusters, from January to April.
Brown pods 1.6 to 3.2 inches long (4-8 cm), 0.4 inch wide (1 cm).