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Loughmiller, Campbell and Lynn
Baccharis salicifolia (Ruiz & Pav.) Pers.
Mule's fat, Seep willow
Synonym(s): Baccharis glutinosa, Baccharis viminea, Molina salicifolia
USDA Symbol: BASA4
USDA Native Status: L48 (N)
A willow-like, thicket-forming shrub, 3-10 ft. tall, with rich-green, semi-deciduous foliage. Whitish-yellow flowers occur in numerous, terminal, flat-topped clusters.
Despite its common name, this shrubby plant is not a willow, but rather a member of the aster family. The Latin name salicifolia means willow-leaved.
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf:
Fruit: Size Class:
Bloom InformationBloom Color: White , Pink
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
, UT Native Distribution:
C. & s. CA
to s. CO, TX
& Mex. Native Habitat:
Valley & foothill waterways to 2000 ft.
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Moist
CaCO3 Tolerance: High
Soil Description: Moist soils.
Conditions Comments: Not Available
BenefitUse Ornamental: Nice informal hedge.
Use Wildlife: Good habitat plant.
Conspicuous Flowers: yes
PropagationDescription: Increase by sowing seed or taking cuttings in summer. Germinating seeds under mist or a plastic tent is recommended in some sources. Others suggest sowing seeds in sandy seed beds in fall or early spring.
Seed Collection: Collect ripe fruits by hand. Fruits can be rubbed to remove the pappus. Seeds are tiny. Keep seeds moist.
Seed Treatment: No pretreatment is necessary.
Commercially Avail: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
Record Last Modified: 2007-01-01
Research By: TWC Staff