North America Native Plant

Small Matweed

Botanical name: Guilleminea densa

USDA symbol: GUDE

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Small Matweed: A Tough Native Ground Cover for Challenging Spots Meet small matweed (Guilleminea densa), a humble yet resilient native plant that might just be the unsung hero your garden needs. While it may not win any beauty contests, this tough little perennial has earned its place in the hearts ...

Small Matweed: A Tough Native Ground Cover for Challenging Spots

Meet small matweed (Guilleminea densa), a humble yet resilient native plant that might just be the unsung hero your garden needs. While it may not win any beauty contests, this tough little perennial has earned its place in the hearts of native plant enthusiasts and pragmatic gardeners alike.

What is Small Matweed?

Small matweed is a low-growing, mat-forming forb that belongs to the amaranth family. As a perennial herbaceous plant, it lacks woody stems but returns year after year, slowly spreading to form dense carpets close to the ground. Don’t expect towering heights from this plant – it typically stays under 6 inches tall but can spread several feet wide over time.

The plant produces tiny, inconspicuous white to greenish flowers that may not catch your eye from across the yard, but they have their own subtle charm when viewed up close. The real appeal of small matweed lies in its incredible toughness and ability to thrive where other plants struggle.

Where Small Matweed Calls Home

This scrappy native is naturally found across a surprising range of states, including Arizona, California, Colorado, Maryland, New Mexico, Oklahoma, South Carolina, and Texas. Its wide distribution speaks to its adaptability and resilience.

Why Consider Small Matweed for Your Garden?

Small matweed isn’t for every garden or every gardener, but it excels in specific situations where other plants might fail:

  • Drought tolerance: Once established, this plant can handle extended dry periods without supplemental watering
  • Poor soil champion: Thrives in sandy, rocky, or otherwise challenging soils
  • Low maintenance: Requires minimal care once established
  • Native plant benefits: Supports local ecosystems and wildlife
  • Erosion control: The mat-forming habit helps stabilize soil

Perfect Garden Situations for Small Matweed

Small matweed shines in specific landscape scenarios:

  • Xeriscaping: Ideal for water-wise gardens in arid regions
  • Rock gardens: Fills spaces between rocks and boulders naturally
  • Restoration projects: Excellent for rehabilitating disturbed or degraded areas
  • Naturalized areas: Perfect for creating low-maintenance, wildlife-friendly spaces
  • Problem spots: Great solution for areas with poor soil or limited water access

Growing Conditions and Care

The beauty of small matweed lies in its simplicity. This plant thrives in conditions that would stress many other species:

  • Sunlight: Prefers full sun exposure
  • Soil: Adapts to various soil types, particularly sandy or rocky soils with good drainage
  • Water: Drought-tolerant once established; avoid overwatering
  • Hardiness zones: Generally hardy in USDA zones 6-10, depending on location

Planting and Establishment Tips

Getting small matweed established is refreshingly straightforward:

  • Plant in spring after the last frost date
  • Choose a sunny location with well-draining soil
  • Water regularly during the first growing season to help establishment
  • Once established, reduce watering significantly
  • Allow the plant to self-seed naturally for gradual spread
  • Minimal fertilization needed – this plant actually prefers lean soils

Wildlife and Ecological Benefits

While small matweed may appear modest, it plays a valuable role in supporting local ecosystems. The flowers, though tiny, can provide nectar for small pollinators and beneficial insects. As a native species, it has co-evolved with local wildlife and contributes to the overall biodiversity of your garden.

Is Small Matweed Right for Your Garden?

Small matweed isn’t the right choice for every gardener or every situation. Consider this plant if you:

  • Have challenging growing conditions with poor soil or limited water
  • Want to support native plant communities
  • Need low-maintenance ground cover for naturalized areas
  • Are working on erosion control projects
  • Appreciate subtle beauty over showy displays

However, you might want to look elsewhere if you’re seeking:

  • Dramatic flowering displays
  • Plants for formal garden settings
  • Quick-growing ground covers
  • Plants for shady locations

The Bottom Line

Small matweed may never grace the cover of a gardening magazine, but for the right situation and the right gardener, it’s a reliable, native solution that asks for very little while giving back to the local ecosystem. Sometimes the most valuable plants are the ones that simply show up, do their job quietly, and help everything else thrive around them.

Small Matweed

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Amaranthaceae Martinov - Amaranth family

Genus

Guilleminea Kunth - matweed

Species

Guilleminea densa (Humb. & Bonpl. ex Schult.) Moq. - small matweed

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