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Growing Senna artemisioides: Silver Senna

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Form: Rounded shrub.
Leaf retention: Evergreen.
Growth rate: Rapid.
Mature Size: 6' high and wide. It needs an eight foot diameter space for sufficient room to grow.
Flowers: Five yellow, cupped petals, growing in clusters, fragrant.
Bloom: Winter to spring.
Fruit: Flat bean pod, green turning to brown. The beans are edible when cooked.
Leaves: Feathery-looking, narrow and linear, light green to gray-green, covered in tiny hairs.
Stems: No thorns.
Roots: Nitrogen-fixing*, with a taproot.
Wildlife: Attracts butterflies, bees, and small birds.
Toxic / Danger: No.
Origin: Australia.

Cultivation and Uses
USDA hardiness zones: 8b-11. It is damaged below 22°F.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun.
Water once established: Monthly.
Soil: Well drained to avoid root rot, dry, pH 6.6-8.5 (slightly acidic to alkaline). This plant is saline tolerant. *Do not use a nitrogen fertilizer.
Prune: Lightly, soon after flowering. The fullest bloom occurs when the plant is allowed to grow "spiky" after spring trimming. New flower buds set in August. Pruning after August eliminates flowering the following winter. Prune moderately to spur new growth and to shape. Prune seedpods after flowering if desired. Remove winter damage after the danger of frost has passed.
Litter: Abundant bean pods.
Propagation: Seed soaked in hot water.
Uses: Ornamental, xeric garden, bird garden.

This plant is a member of the legume family (Leguminosae). Its former scientific name is Cassia artemisioides. Another common name is Feathery Senna. This is a colorful, fragrant, and hardy plant for Southwestern gardens.

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Latest update: February, 2019.

Senna artemisioides: Silver Senna - flowers

Senna artemisioides: Silver Senna - seed pods

Senna artemisioides: Silver Senna