trefle.io · CC-BY-SA
Asteraceae
Tetradymia spinosa
Tetradymia spinosa
Also known as Lagothamnus microphyllus, Lagothamnus ambiguus
Flowering Plants · Native Plants · Trees & Shrubs · Horsebrush · Tetradymia · Desert Shrub · Xeriscape · Native Shrub · Great Basin · Spiny Plant · Yellow Flowers · Arid Plant · Western Native
Spiny horsebrush is a drought-adapted native shrub of the western American high desert, bearing small yellow composite flowers on spiny stems. It thrives in full sun to partial shade with lean, well-drained alkaline soils and requires very little supplemental watering once established. This plant is best suited to xeriscape or native habitat restoration projects rather than conventional garden settings.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water sparingly; allow soil to dry completely between waterings · Every 14-21 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6.5–8.2
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed, Division, Cutting
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 4 ft
- Spacing
- 36 in apart
- Growth rate
- Slow
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Wyoming
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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