Plant · GBIF taxon 3145375
Clustered Tarweed
Deinandra fasciculataAlso known as Fascicled Spikeweed, Clustered Tarplant
Clustered tarweed covers dry slopes, chaparral openings, and coastal sage scrub across Southern California and Baja California with a late-season burst of bright yellow. Its sticky, gland-tipped foliage emits a rich resinous scent that deters herbivores while conserving moisture during dry summer months. The small flower heads cluster tightly at the branch tips, providing a vital nectar source for native bees and butterflies when other flora has gone dormant.
AromaticNativeWildflower
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Sunlight
- Water
- Soil Nutrients
Predators
- Native Bees
- Herbivorous Insects
- Birds
ThreatsUrban development, invasive non-native grasses, habitat fragmentation
HabitatsChaparral, coastal sage scrub, dry grasslands
Life spanAnnual
Size / weightNot available
Classification
- FamilyAsteraceae
- SpeciesDeinandra fasciculata
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Best Viewing Season: Look for blooming tight clusters of bright yellow flowers from May through August.
- Scent Discovery: Gently brush near the plant without crushing it to notice its sweet, piney resinous aroma.
- Habitat Context: Search dry coastal hillsides, chaparral clearings, and disturbed clay soils.
Frequent Companion (c) George Williams, some rights reserved (CC BY), uploaded by George Williams · cc-by
Close Relative (c) Zack Abbey, some rights reserved (CC BY), uploaded by Zack Abbey · cc-by
Ecological Relative (c) Dawn Endico, some rights reserved (CC BY-SA) · cc-by-sa
Close Relative (c) Franco Folini, some rights reserved (CC BY) · cc-by
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