Great Design Plant: Trailing Indigo Bush (Dalea greggii) for Hot, Dry Sites

Trailing indigo bush (Dalea greggii), also called Gregg's prairie clover, looks delicate with its lacy gray-green foliage—but this ground cover thrives in scorching, reflected heat. As urban heat islands intensify, plants like this help cool landscapes while providing subtle spring-to-summer blooms for bees.

Noelle Johnson Landscape Consulting

Quick Facts

• Zones: 8 (10°F / –18°C)
• Size: 1–2 ft tall, 2–6 ft wide
• Light: Full sun, reflected sun
• Water: Low–moderate; deep soak every 2 wks summer, 3 wks spring/fall, monthly winter
• Soil: Well-drained (roots rot in wet soil); no amendments/fertilizer needed
• Plant: Late winter, spring, or fall from transplants

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Standout Features

• Foliage: Tiny gray-green leaflets create lacy, evergreen (zone 9+) carpet year-round. Stems root where they touch soil—excellent for erosion control.
• Flowers: Fuzzy light purple, spring into summer (occasionally fall). Subtle from afar; charming up close. Bees race to them.
• Benefits: Drought-tolerant, deer-resistant, pollinator-friendly.

Noelle Johnson Landscape Consulting

Noelle Johnson Landscape Consulting

Design Applications

• Heat zones: Driveways, sidewalks, west-facing walls where reflected heat is intense.
• Companions: Darker succulents—cow horn agave (Agave bovicornuta), Texas desert spoon (Dasylirion texanum), Mexican grass tree (Dasylirion quadrangulatum).
• Soft pastel display: Plant in front of Parry's penstemon (Penstemon parryi) or pink fairy duster (Calliandra eriophylla).

Noelle Johnson Landscape Consulting

Care

Prune early spring: remove dead growth, preserve gentle mounding habit. That's it.