North America Non-native Plant

Star Clover

Botanical name: Trifolium stellatum

USDA symbol: TRST13

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Star Clover: A Mediterranean Charmer for Your Garden If you’re looking for a low-maintenance ground cover with distinctive star-shaped blooms, star clover (Trifolium stellatum) might just catch your eye. Also known as starry clover, this Mediterranean native brings a unique texture and delicate beauty to gardens, though it comes with ...

Star Clover: A Mediterranean Charmer for Your Garden

If you’re looking for a low-maintenance ground cover with distinctive star-shaped blooms, star clover (Trifolium stellatum) might just catch your eye. Also known as starry clover, this Mediterranean native brings a unique texture and delicate beauty to gardens, though it comes with some considerations for the eco-conscious gardener.

What Makes Star Clover Special?

Star clover stands out from other clovers thanks to its remarkable flowers and seed heads. The small, white to pale pink blooms cluster together in rounded heads, but the real show begins after flowering. The star-shaped calyxes—those pointed sepals that surround each flower—persist long after the petals fade, creating distinctive spiky, star-like structures that give this plant its common name and lasting ornamental appeal.

As an annual forb, star clover completes its entire life cycle in one growing season, making it a fast-growing option for filling bare spots or adding seasonal interest to your landscape.

Where Does Star Clover Grow?

Originally from the Mediterranean region of southern Europe and North Africa, star clover has made its way to California, where it has naturalized and reproduces on its own in the wild. This non-native species has adapted well to Mediterranean-type climates.

Garden Appeal and Design Uses

Star clover works beautifully as a ground cover in several garden settings:

  • Mediterranean-style gardens where its origins make it a natural fit
  • Drought-tolerant landscapes that need low-water plants
  • Wildflower meadows for a naturalized look
  • Rock gardens where it can nestle between stones
  • Areas with poor soil where other plants struggle

The plant stays relatively low to the ground and spreads to create a carpet-like effect, making it useful for filling in gaps or covering slopes where erosion control is needed.

Pollinator and Wildlife Benefits

Like most clovers, star clover offers valuable nectar for bees, butterflies, and other small pollinators during its spring blooming period. The flowers provide an important food source when many other plants are just getting started for the season.

Growing Conditions and Care

Star clover is refreshingly easy to grow if you can provide the right conditions:

  • Sunlight: Full sun is essential for best growth and flowering
  • Soil: Well-draining soils are a must; sandy or rocky soils are ideal
  • Water: Drought tolerant once established, but benefits from some water during germination
  • Climate: Thrives in USDA hardiness zones 8-10

This Mediterranean native actually prefers poor soils and can struggle in overly rich, fertile ground. It’s perfectly happy in areas where other plants might sulk.

Planting and Care Tips

Getting star clover established is straightforward:

  • Direct seed in fall or early spring for best results
  • Scatter seeds over prepared soil and lightly rake in
  • Water gently until germination occurs
  • Once established, minimal care is needed
  • Plants will self-seed readily for next year’s display
  • Expect plants to go dormant or die back during hot summer months

Should You Plant Star Clover?

Star clover can be a lovely addition to the right garden, especially if you’re creating a Mediterranean-themed landscape or need a low-maintenance ground cover for challenging conditions. However, since it’s not native to North America, consider these factors:

Pros: Easy to grow, drought tolerant, unique ornamental appeal, supports pollinators, thrives in poor soils

Considerations: As a non-native species, it won’t provide the same ecological benefits as native plants for local wildlife

Native Alternatives to Consider

If you’re interested in supporting local ecosystems, consider these native alternatives that offer similar benefits:

  • Native lupines for nitrogen-fixing and colorful blooms
  • Regional native clovers if available in your area
  • Native wildflower mixes suited to your specific region
  • Local native ground covers that provide habitat for native insects

Whether you choose star clover or a native alternative, the key is selecting plants that match your garden’s conditions and your conservation goals. Star clover can certainly earn its place in the right setting, bringing Mediterranean charm and easy-care beauty to gardens in suitable climates.

Star 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 stellatum L. - star clover

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