North America Native Plant

Balloon Sack Clover

Botanical name: Trifolium depauperatum var. amplectens

USDA symbol: TRDEA

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Trifolium amplectens Torr. & A. Gray (TRAM14)   

Balloon Sack Clover: A Charming California Native Worth Growing If you’re looking for a delightful native groundcover that’s as quirky as its name suggests, meet balloon sack clover! This petite California native might not win any height contests, but what it lacks in stature, it makes up for in charm ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Balloon Sack Clover: A Charming California Native Worth Growing

If you’re looking for a delightful native groundcover that’s as quirky as its name suggests, meet balloon sack clover! This petite California native might not win any height contests, but what it lacks in stature, it makes up for in charm and ecological value.

What Makes Balloon Sack Clover Special?

Balloon sack clover (Trifolium depauperatum var. amplectens) gets its whimsical name from its distinctive inflated seed pods that puff up like tiny balloons after flowering. Also known by its synonym Trifolium amplectens, this annual forb belongs to the legume family and brings all the nitrogen-fixing benefits you’d expect from a clover.

As a true California native, this plant has evolved to thrive in the Golden State’s unique Mediterranean climate. It’s naturally adapted to the boom-and-bust cycle of wet winters and dry summers that defines much of California’s landscape.

Where Does It Grow?

Balloon sack clover is endemic to California, where it can be found scattered across grasslands, open woodlands, and disturbed areas throughout much of the state. This plant has made itself at home in California’s diverse ecosystems, from coastal areas to inland valleys.

Why Grow Balloon Sack Clover?

There are several compelling reasons to consider adding this native beauty to your garden:

  • True California native: Support local ecosystems by growing plants that belong here
  • Pollinator magnet: The small clover flowers attract bees and other beneficial insects
  • Drought tolerant: Once established, it requires minimal water
  • Low maintenance: As an annual, it completes its lifecycle and self-seeds for next year
  • Unique character: Those inflated seed pods add textural interest to naturalized areas
  • Soil improvement: Like all legumes, it fixes nitrogen in the soil

Garden Design Ideas

Balloon sack clover works beautifully in several landscape settings:

  • Native plant gardens: Perfect for authentic California plant communities
  • Wildflower meadows: Adds delicate texture among showier wildflowers
  • Naturalized areas: Excellent for low-maintenance, natural-looking spaces
  • Drought-tolerant landscapes: Fits perfectly in water-wise garden designs

Growing Conditions and Care

The beauty of native plants is their adaptability to local conditions, and balloon sack clover is no exception:

  • Sunlight: Thrives in full sun conditions
  • Soil: Prefers well-drained soils; avoid heavy, waterlogged areas
  • Water: Drought tolerant once established; benefits from winter rains
  • Climate zones: Best suited for USDA zones 8-10, matching California’s Mediterranean climate

Planting and Care Tips

Growing balloon sack clover is refreshingly straightforward:

  • Timing: Direct seed in fall before the rainy season for best results
  • Seeding: Scatter seeds over prepared soil and lightly rake in
  • Watering: Water lightly until germination, then rely on natural rainfall
  • Maintenance: Minimal care required; allow plants to complete their cycle and drop seeds
  • Self-seeding: This annual will reseed itself if conditions are favorable

Wildlife and Pollinator Benefits

Don’t let its small size fool you—balloon sack clover punches above its weight when it comes to supporting wildlife. The flowers provide nectar for native bees and other small pollinators, while the seeds may feed small birds and other wildlife. As a legume, it also enriches the soil for neighboring plants.

Is Balloon Sack Clover Right for Your Garden?

This charming native is ideal for gardeners who appreciate subtle beauty and want to support local ecosystems. It’s perfect for those seeking low-maintenance options that work with California’s natural climate patterns rather than against them. While it won’t provide the bold color of some showier natives, its delicate flowers and unique seed pods offer quiet charm that’s uniquely Californian.

If you’re creating a native plant garden, establishing a wildflower meadow, or simply want to add authentic California character to your landscape, balloon sack clover deserves serious consideration. Sometimes the most unassuming plants turn out to be the most rewarding!

Balloon Sack Clover

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Trifolium L. - clover

Species

Trifolium depauperatum Desv. - cowbag clover

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