Green cassia shrub with fine bright green needle-like foliage and masses of yellow flowers

Green Cassia

Senna nemophila
Categories:
Shrubs  ·  
Desert Shrubs
Light
Full sun
Water
Low water once established; water deeply and let soil dry between irrigations. Provide occasional supplemental water during prolonged summer heat and more regular irrigation while establishing.
Size
5-6 ft tall × 5-8 ft wide
Habit
Rounded shrub
Toxicity
Toxic — Pets
Description
An Australian desert shrub with fine, narrow green foliage and masses of golden-yellow flowers, well suited to Phoenix landscapes.
Bloom Time
Late winter to spring
Deciduous / Evergreen
Semi-evergreen
Special Features
Attracts Bees / Pollinators, Drought Tolerant, Showy Flowers
Growth Rate
Moderate to fast
Growth Habit
Rounded shrub
Mature Size
5-6 ft tall × 5-8 ft wide
Flower Color
Yellow
Foliage Color
Green
Landscape Use
Border / Bed, Desert / Xeriscape, Foundation Planting, Hedge / Screen, Specimen / Accent
Garden Style
Desert / Xeriscape, Hedge / Formal, Pollinator / Wildlife
Soil
Alkaline Tolerant, Sandy / Rocky, Well-Drained
Companion Plants
Blackfoot daisy, Desert marigold, Desert spoon, Fairy duster, Golden barrel cactus, Red yucca
Toxic — Pets
Seeds/pods toxic if ingested
Care Instructions

Light: Full sun; tolerates light shade, but flowers best with abundant sunlight.

Water: Low water once established; water deeply and let soil dry between irrigations. Provide occasional supplemental water during prolonged summer heat and more regular irrigation while establishing.

Soil: Well-drained sandy, gravelly, or loamy soil; tolerates alkaline desert soils. Avoid persistently wet soil.

Mature size: Approximately 5–8 feet tall and 5–8 feet wide.

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

Evergreen / deciduous: Evergreen; may thin or lose some foliage during severe drought or unusually cold weather.

Growth rate: Moderate to fast with adequate moisture and good drainage.