North America Native Plant

Hartweg’s Pricklyleaf

Botanical name: Thymophylla pentachaeta var. hartwegii

USDA symbol: THPEH

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Dyssodia hartwegii (A. Gray) B.L. Rob. (DYHA2)  âš˜  Dyssodia pentachaeta (DC.) B.L. Rob. var. hartwegii (A. Gray) Strother (DYPEH)  âš˜  Dyssodia pentachaeta (DC.) B.L. Rob. ssp. hartwegii (A. Gray) Strother (DYPEH2)   

Hartweg’s Pricklyleaf: A Charming Native Groundcover for Southwestern Gardens If you’re looking for a low-maintenance, drought-tolerant native plant that brings cheerful yellow blooms to your garden, Hartweg’s pricklyleaf might just be your new best friend. This delightful southwestern native (Thymophylla pentachaeta var. hartwegii) proves that good things really do come ...

Hartweg’s Pricklyleaf: A Charming Native Groundcover for Southwestern Gardens

If you’re looking for a low-maintenance, drought-tolerant native plant that brings cheerful yellow blooms to your garden, Hartweg’s pricklyleaf might just be your new best friend. This delightful southwestern native (Thymophylla pentachaeta var. hartwegii) proves that good things really do come in small packages.

Meet This Southwestern Native

Hartweg’s pricklyleaf is a true American native, naturally found across Arizona, New Mexico, and Texas. As a perennial forb herb, it’s built to last through multiple growing seasons without developing woody stems like shrubs or trees. Instead, it maintains its herbaceous nature while forming attractive, low-growing clumps that hug the ground.

Why You’ll Love Growing Hartweg’s Pricklyleaf

This little powerhouse brings several compelling reasons to earn a spot in your garden:

  • Drought Champion: Once established, it thrives with minimal water, making it perfect for xeriscaping and water-wise gardens
  • Pollinator Magnet: The small, bright yellow daisy-like flowers attract native bees, butterflies, and other beneficial insects
  • Low Maintenance: Requires very little care once established, perfect for busy gardeners
  • Native Benefits: Supports local ecosystems and wildlife as an indigenous species
  • Versatile Design Element: Works beautifully as groundcover, in rock gardens, or as border edging

Perfect Garden Settings

Hartweg’s pricklyleaf shines in specific garden styles and settings:

  • Desert and xerophytic landscapes
  • Rock gardens and alpine settings
  • Native plant gardens
  • Drought-tolerant perennial borders
  • Naturalized areas and meadow gardens

Growing Conditions That Make It Happy

Success with Hartweg’s pricklyleaf comes from mimicking its natural habitat:

  • Sunlight: Thrives in full sun locations
  • Soil: Prefers well-draining soil; avoid heavy clay or constantly moist conditions
  • Fertility: Actually performs better in poor to moderately fertile soils rather than rich, amended beds
  • Hardiness: Suitable for USDA zones 7-10
  • Water: Drought tolerant once established, but appreciates occasional deep watering during extreme dry periods

Planting and Care Tips

Getting started with Hartweg’s pricklyleaf is refreshingly straightforward:

  • Best planting time: Spring, after the last frost danger has passed
  • Spacing: Allow adequate room for spreading, typically 12-18 inches apart
  • Initial care: Water regularly during the first growing season to help establish roots
  • Ongoing maintenance: Once established, water sparingly and avoid fertilizing
  • Pruning: Light pruning after flowering can help maintain shape and encourage additional blooms
  • Winter care: In colder zones, may benefit from light mulch protection

The Bottom Line

Hartweg’s pricklyleaf offers southwestern gardeners an excellent opportunity to grow a beautiful, low-maintenance native plant that supports local wildlife while requiring minimal resources. Its cheerful yellow flowers, drought tolerance, and ground-hugging growth habit make it an ideal choice for anyone looking to create sustainable, water-wise landscapes that celebrate regional flora.

Whether you’re designing a full native plant garden or simply want to add some resilient, pollinator-friendly plants to your existing landscape, Hartweg’s pricklyleaf deserves serious consideration. After all, what’s not to love about a plant that asks for so little yet gives so much in return?

Hartweg’s Pricklyleaf

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Thymophylla Lag. - pricklyleaf

Species

Thymophylla pentachaeta (DC.) Small - fiveneedle pricklyleaf

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA