Silvery cassia shrub with fine silvery-grey foliage and golden-yellow flowers by a block wall

Silvery Cassia

Senna artemisioides
Categories:
Shrubs  ·  
Desert Shrubs
Light
Full sun
Water
Low water once established; water deeply and allow soil to dry between irrigations. Provide occasional supplemental water during prolonged summer heat and regular establishment watering.
Size
4-6 ft tall × 4-6 ft wide
Habit
Rounded shrub
Toxicity
Toxic — Pets
Description
An Australian desert shrub with fine, silvery-gray foliage and abundant golden-yellow flowers, well suited to Phoenix landscapes.
Bloom Time
Winter to spring
Deciduous / Evergreen
Evergreen
Special Features
Attracts Bees / Pollinators, Colorful Foliage, Drought Tolerant, Showy Flowers
Growth Rate
Moderate to fast
Growth Habit
Rounded shrub
Mature Size
4-6 ft tall × 4-6 ft wide
Flower Color
Yellow
Foliage Color
Silver-gray
Landscape Use
Border / Bed, Desert / Xeriscape, Foundation Planting, Hedge / Screen
Garden Style
Desert / Xeriscape, Hedge / Formal, Pollinator / Wildlife
Soil
Alkaline Tolerant, Sandy / Rocky, Well-Drained
Companion Plants
Blackfoot daisy, Desert marigold, Globe mallow, Red yucca, Santa Rita prickly pear
Toxic — Pets
Seeds/pods toxic if ingested
Care Instructions

Light: Full sun preferred; tolerates light shade but flowers less heavily.

Water: Low water once established; water deeply and allow soil to dry between irrigations. Provide occasional supplemental water during prolonged summer heat and regular establishment watering.

Soil: Well-drained sandy, gravelly, or rocky soil; tolerates alkaline desert soils. Avoid poorly drained sites.

Mature size: 4–6 feet tall and 4–6 feet wide.

Bloom: Late winter through spring, typically February–April in Phoenix; timing varies with weather.

Evergreen / deciduous: Evergreen; may thin or shed foliage during severe drought or cold.

Growth rate: Moderate to fast with adequate establishment water.