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White Bursage

Ambrosia dumosa

Details & Attributes


Plant Type(s) Perennial
Native to Arizona Yes!
Water Needs Low
Sun Full sun
Pollinators Wind pollinated
Has Spines No
Size
In relative feet, width by height
1-3 × 2-4
Freeze Tolerant No
Flowering Season February-December
Flower Color Yellow
Minimum Temperature Range 20-30 °F
Leaf Description Small, heavily lobed, covered in greyish hairs
Fruit Burrs
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Ethnobotany Allergenic
Description A dominant member of low desert plant communities in western Arizona. In some of the hottest parts of the Sonoran Desert where trees are scarce, white bursage serves as an important "nurse plant" for saguaros (Carnegia gigantea) as they germinate and begin to grow. Plant on well draining soils or mounds in combination with creosote (Larrea tridentata), burrobush (Hymenoclea salsola), and globe mallow (Sphaeralcea ambigua) in a problem spot where other plants fry in the heat. Of all the bursages this species may have the showiest bloom with its spikes of shaggy yellow flowers.