North America Native Plant

Gray Bushmallow

Botanical name: Malacothamnus aboriginum

USDA symbol: MAAB2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Malvastrum aboriginum B.L. Rob. (MAAB5)   

Gray Bushmallow: A Rare California Native Worth Protecting in Your Garden Meet the Gray Bushmallow (Malacothamnus aboriginum), a charming but increasingly rare California native that deserves a spot in every Golden State garden. This delightful shrub might not be the showiest plant on the block, but what it lacks in ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Gray Bushmallow: A Rare California Native Worth Protecting in Your Garden

Meet the Gray Bushmallow (Malacothamnus aboriginum), a charming but increasingly rare California native that deserves a spot in every Golden State garden. This delightful shrub might not be the showiest plant on the block, but what it lacks in flash, it makes up for in resilience, wildlife value, and that special satisfaction that comes from growing something truly special.

What Makes Gray Bushmallow Special?

Gray Bushmallow is a perennial shrub that typically grows 3-6 feet tall and wide, creating a lovely mounded form perfect for adding structure to native plant gardens. Its soft, grayish-green leaves provide a beautiful backdrop for the star of the show: delicate pink to lavender flowers that look like miniature hibiscus blooms. These charming flowers appear from late spring through summer, creating a subtle but enchanting display.

The plant’s somewhat fuzzy foliage gives it a distinctive texture that plays well with other California natives, and its naturally compact growth habit means it won’t overtake your garden space.

A California Original

This native gem is found exclusively in California, where it naturally grows in chaparral and coastal sage scrub communities throughout southern regions of the state. It’s perfectly adapted to California’s Mediterranean climate, making it an ideal choice for gardeners looking to create water-wise, regionally appropriate landscapes.

Important Conservation Note

Here’s where things get serious: Gray Bushmallow is considered imperiled, with only 6-20 known occurrences remaining in the wild. This rarity status means that while we absolutely encourage growing this beautiful native, it’s crucial to source your plants responsibly. Always purchase from reputable native plant nurseries that propagate their own stock rather than collecting from wild populations.

Why Grow Gray Bushmallow?

Despite its rarity in the wild, Gray Bushmallow can be a fantastic addition to the right garden. Here’s why:

  • Extremely drought-tolerant once established
  • Attracts native bees, butterflies, and other beneficial insects
  • Low maintenance requirements
  • Provides habitat and food for local wildlife
  • Helps preserve California’s botanical heritage
  • Perfect for water-wise landscaping

Perfect Garden Settings

Gray Bushmallow thrives in:

  • Native California gardens
  • Drought-tolerant landscapes
  • Wildlife and pollinator gardens
  • Mediterranean-style gardens
  • Coastal and inland chaparral restorations

Growing Conditions and Care

This adaptable shrub is surprisingly easy to grow once you understand its preferences:

Climate: Hardy in USDA zones 9-11, perfect for most of California’s inhabited areas.

Sun and Soil: Prefers full sun to partial shade and well-draining soil. It’s not picky about soil type but absolutely cannot tolerate standing water or heavy clay that doesn’t drain.

Water Needs: Here’s the beauty of California natives – once established (usually after the first year), Gray Bushmallow needs minimal supplemental watering. During establishment, water regularly but allow soil to dry between waterings.

Planting and Care Tips

Best Planting Time: Fall is ideal, giving the plant time to establish roots before the hot, dry summer months.

Spacing: Plant 4-6 feet apart to allow for mature spread.

First Year Care: Water regularly (but don’t overwater!) and mulch around the base to retain moisture and suppress weeds.

Ongoing Maintenance: Minimal pruning needed – just remove dead or damaged branches. Light pruning after flowering can help maintain shape.

Fertilizing: Like most California natives, Gray Bushmallow doesn’t need rich soil or regular fertilizing. In fact, too much fertilizer can make it more susceptible to problems.

Supporting Pollinators and Wildlife

One of the best reasons to grow Gray Bushmallow is its value to local wildlife. The flowers provide nectar for native bees and butterflies, while the plant structure offers nesting sites and shelter for beneficial insects. It’s a perfect example of how gardening with natives creates a mini-ecosystem that supports biodiversity.

The Bottom Line

Gray Bushmallow might be rare in the wild, but it can be a treasured addition to your garden when sourced responsibly. It offers the perfect combination of beauty, low maintenance, and ecological value that makes native gardening so rewarding. By growing this special plant, you’re not just creating a beautiful landscape – you’re participating in conservation efforts and supporting California’s unique botanical heritage.

Remember: always source from reputable native plant nurseries, never collect from wild populations, and consider joining local native plant societies to learn more about conservation efforts in your area. Together, we can help ensure that future generations will be able to enjoy the simple beauty of California’s Gray Bushmallow.

Gray Bushmallow

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Malvales

Family

Malvaceae Juss. - Mallow family

Genus

Malacothamnus Greene - bushmallow

Species

Malacothamnus aboriginum (B.L. Rob.) Greene - Gray bushmallow

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