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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