North America Non-native Plant

Small White Clover

Botanical name: Trifolium nigrescens

USDA symbol: TRNI3

Life cycle: annual

Habit: forb

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

Small White Clover: A Modest Ground Cover with Wildlife Appeal If you’ve ever wandered through the southeastern United States and noticed small patches of delicate white flowers carpeting the ground, you might have encountered small white clover (Trifolium nigrescens). This unassuming little plant has quietly made itself at home across ...

Small White Clover: A Modest Ground Cover with Wildlife Appeal

If you’ve ever wandered through the southeastern United States and noticed small patches of delicate white flowers carpeting the ground, you might have encountered small white clover (Trifolium nigrescens). This unassuming little plant has quietly made itself at home across several southern states, offering both benefits and considerations for today’s gardeners.

What Exactly is Small White Clover?

Small white clover is an annual forb – basically a soft-stemmed herbaceous plant that completes its entire life cycle in one growing season. Unlike its woody cousins, this little guy stays low to the ground, reaching just about a foot in height. With its fine-textured dark green foliage and cheerful white flowers, it creates a modest but pleasant ground cover that many gardeners overlook.

Originally hailing from regions outside North America, small white clover has naturalized across the southeastern states, including Alabama, Florida, Georgia, Louisiana, Mississippi, and Tennessee. While it’s not a native species, it has established itself as part of the local landscape without human intervention.

The Good, The Practical, and The Wildlife-Friendly

Here’s where small white clover gets interesting for gardeners and wildlife enthusiasts alike. This plant serves as a reliable food source for various animals, providing 5-10% of the diet for large animals, small mammals, and terrestrial birds. While they don’t typically use it for cover, the nutritional value makes it a worthwhile addition to wildlife-friendly spaces.

The flowers, which bloom from mid-spring through summer, attract pollinators like bees with their nectar. Though small and unassuming, these white flower heads add a delicate charm to naturalized areas and can help support local pollinator populations.

Growing Conditions: What Small White Clover Wants

Small white clover isn’t particularly fussy, but it does have some preferences:

  • Soil: Thrives in fine to medium-textured soils but struggles in coarse, sandy conditions
  • pH: Prefers slightly acidic conditions, ranging from 5.6 to 6.9
  • Water: Needs moderate moisture and doesn’t tolerate drought well
  • Sun: Requires full sun and won’t tolerate shade
  • Climate: Best suited for areas with at least 119 frost-free days and 30-70 inches of annual precipitation

Based on its distribution and temperature requirements, this plant thrives in USDA hardiness zones 8-10, making it suitable for warmer southern climates.

Planting and Care: Keep It Simple

If you decide to include small white clover in your landscape, the good news is that it’s relatively easy to establish. The plant propagates readily by seed – in fact, each pound contains about a million seeds! Here’s how to get started:

  • Sow seeds in spring when soil temperatures warm up
  • Scatter seeds on prepared soil and lightly rake in
  • Keep soil consistently moist until germination
  • Once established, the plant has a rapid growth rate and high seedling vigor
  • Expect rapid seed spread, so plan accordingly

The plant fixes nitrogen at low levels, so while it won’t dramatically improve soil fertility like some other legumes, it does contribute modestly to soil health.

Should You Grow Small White Clover?

As with any non-native plant, there are considerations to weigh. Small white clover can be a useful addition to wildlife gardens, naturalized meadows, or areas where you want low-maintenance ground cover that supports local fauna. Its rapid seed spread means it can fill in spaces quickly, which might be exactly what you want – or perhaps more than you bargained for.

If you’re passionate about native gardening, consider exploring native alternatives that provide similar benefits. Native clovers and other legumes in your region might offer comparable wildlife value while supporting local ecosystems more directly.

Whether you choose to embrace small white clover or seek native alternatives, the key is thoughtful planning and understanding what each plant brings to your garden ecosystem. After all, the best garden is one that reflects both your goals and your local environment’s needs.

Wildlife Status

Want to attract wildlife or keep hungry critters away from your garden? Understanding the relationship between plants and wildlife is key. While plant tags may indicate deer and rabbit resistance, they don't tell the full story. Every gardener has experienced the disappointment of purchasing "deer-resistant" plants only to find them nibbled to the ground!

The extent to which plants are resistant to animal browsing is a matter of degree. Likewise, the extent to which a plant attracts wanted visitors also varies. Whether you want a garden full or free of wildlife, learning about interactions between a plant and wild animals can help you make smarter choices for the garden you desire.

As shown below Shrubby Indian Mallow isn't a large food source for animals or birds. You can confidently add this plant to your garden and rest assured knowing it's unlikely to be devoured by four-legged visitors.

Small animals

5-10% of diet

Infrequently used as cover

Large animals

5-10% of diet

Infrequently used as cover

Terrestrial birds

5-10% of diet

Infrequently used as cover

Water birds

not a food source

not a source of cover

Sources:

Yarrow, G.K., and D.T. Yarrow. 1999. Managing wildlife. Sweet Water Press. Birmingham.

Small White 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 nigrescens Viv. - small white clover

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