Botanical Name: Ambrosia pumila
Common Name: San Diego ambrosia, Ragweed
Type of Plant: dicot: perennial
Character

Habit of Growth:
Overall Shape a low, spreading silvery plant with fine textured foliage and inconspicuous yellow-green flowers in summer
Height to 6"
Spread 18" to 2'
Growth Rate slow

Environment:
Exposure outdoors: full sun
Soil prefers fast-draining soils
Hardiness some frost (zones 17-19, 21-24)

Morphology:
Leaves finely divided, pinnatifid leaves to 3" long, 1" across; leaves are silvery and somewhat hairy on upper and lower surfaces
Flowers tight cymes of aster-like flowers without petals; light yellow 1/2" diameter, not considered ornamental
Fruit achenes

Propagation:
stem cuttings; division

Usage:
a low creeping perennial useful in rock gardens, in containers or between pavers in low-traffic areas; blends with other California native plants or Mediterranean plants

Landscape Care:
Watering drought tolerant when established; water once or twice a month during summer months; good drainage is essential for this plant
Fertilizing generally none required
Pruning head back after bloom
Pests/Diseases root rot in heavy soils
Special Conditions
Other Ambrosia pumila is an endangered species in its native habitat

Origin: Riverside and San Diego Counties
Family: Asteraceae

Notes:
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