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Trifolium repens

white clover

Europe and western Asia; lawns, pastures, parks, roadsides, and meadows from sea level to approximately 10,000 feet (3,000 m).

Attracts Pollinators Attracts Butterflies Fragrant (light)

SunFull Sun – Part Shade

WaterMedium

HardinessZones 3–10

Overview

Trifolium repens is a prostrate stoloniferous perennial reaching 2-8 inches (5-20 cm) tall and 12-36 inches (30-90 cm) wide, forming dense creeping mats via stolons that root at every node. Stems are prostrate and smooth, rooting at the nodes, with erect petioles and flower peduncles arising from the stolon nodes. Leaves are trifoliate, with round to obovate leaflets 0.3-0.8 inch (8-20 mm) long, smooth, each usually bearing a pale V-shaped or chevron marking. Petioles are 2-6 inches (5-15 cm) long. Flower heads are globose, 0.6-1 inch (15-25 mm) in diameter, held on long peduncles 2-8 inches (5-20 cm) tall that rise well above the foliage, a key separation from T. pratense, whose heads sit among the leaves. Each head is composed of 20-80 white to pinkish papilionaceous florets; individual florets turn brown and reflex downward after pollination, so a given head carries a mix of upright white fresh florets and downturned brown spent florets through the bloom period. Fruit is a small pod containing 3-4 seeds, enclosed within the persistent calyx. Plants form the standard legume-Rhizobium spp. root-nodule symbiosis and fix atmospheric nitrogen, which supports growth on low-nitrogen soils that limit grass establishment. A single plant produces 1,000-5,000 seeds per year. The stoloniferous habit drives rapid lateral spread: a single stolon extends 6-12 inches (15-30 cm) per growing season and roots at every node. Plants are widespread in lawns, pastures, parks, and meadows worldwide, both as a weed in turf and as an intentional component of clover seed mixes, clover lawns, and living mulches. Hardy in USDA zones 3-10 (-40°F / -40°C). Non-toxic.

Native Range

Trifolium repens is native to Europe and western Asia, where it grows in lawns, pastures, parks, roadsides, and meadows from sea level to approximately 10,000 feet (3,000 m). The species has naturalized across all 50 U.S. states and all Canadian provinces and is widespread in Pacific Northwest lawns, pastures, and low-maintenance turf, where it is simultaneously a volunteer weed and an intentionally seeded component in many modern lawn management systems.

Suggested Uses

The species is used in Fabaceae identification courses for the trifoliate leaf, the papilionaceous flower structure, and root-nodule nitrogen fixation through Rhizobium spp. symbiosis. The sessile-versus-pedunculate flower head comparison between T. pratense and T. repens is a standard exercise, and the shorter corolla tube with honeybee accessibility (versus the bumblebee-dependent T. pratense) is a teaching point in pollination biology. The species is used in clover lawns, living mulches, cover cropping, and regenerative agriculture for nitrogen fixation, weed suppression between rows, and pollinator support. White clover is a primary early-season and midsummer nectar source for honeybees, and commercial white clover honey is a recognized varietal.

How to Identify

A prostrate stoloniferous perennial 2-8 inches (5-20 cm) tall forming dense mats via stolons that root at every node. Leaves are trifoliate with round to obovate smooth leaflets 0.3-0.8 inch (8-20 mm) long, and each leaflet usually bears a pale V-shaped or chevron marking on the upper surface. Flower heads are globose 0.6-1 inch (15-25 mm) in diameter carried on long peduncles 2-8 inches (5-20 cm) tall that rise above the foliage. Separates from T. pratense (red clover) by the prostrate stoloniferous habit versus erect non-stoloniferous, the white flowers versus pink to magenta, the long-pedunculate heads rising above the foliage versus sessile heads sitting on the leaves, and the smooth stems and leaves versus hairy ones. Separates from Medicago lupulina (black medic) by the white globose heads versus tiny yellow spherical heads, the stoloniferous habit versus taprooted, and the round leaflets versus obovate leaflets with a mucronate tip.

Appearance

Size & Dimensions

Height2" - 8"

Width/Spread1' - 3'

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~14 weeks

Spring Summer Fall

Globose white-to-pinkish flower heads 0.6-1 inch (15-25 mm) in diameter open continuously from May through October, with a total bloom span of 12-16 weeks and peak bloom in the Pacific Northwest in June through August. Individual florets in each head are pollinated primarily by honeybees and bumblebees, and the corolla tube of 5-6 mm (shorter than the 9-10 mm tube of T. pratense) is within reach of honeybee tongues, which gives honeybees routine access to the nectar that T. pratense reserves for longer-tongued bumblebees. Individual florets reflex downward and turn brown after pollination, and each head carries a mix of upright fresh florets and downturned spent florets through the bloom.

Detailed Descriptions

Flower Description

White to pinkish; globose flower heads 0.6-1 inch (15-25 mm) in diameter composed of 20-80 papilionaceous florets, held on long peduncles 2-8 inches (5-20 cm) tall that rise well above the foliage

Foliage Description

Medium green; trifoliate with round to obovate smooth leaflets 0.3-0.8 inch (8-20 mm) long, each usually carrying a pale V-shaped or chevron marking on the upper surface; petioles 2-6 inches (5-15 cm) long rising from prostrate stolon nodes

Growing Conditions

Sun Requirements

SunFull Sun SunPartial Shade

Requires 4-10 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range5.5 - 7.5(Neutral)

357912

Soil Types

loam clay silt

Drainagemoist

Water & Climate

Water Needs

Medium

Frost Tolerance

hardy

Time to Maturity

1 year

Care & Maintenance

Care Guide

In lawns where clover is unwanted, hand-pulling the stolon network works for small patches and all rooted nodes are removed to prevent regeneration. Maintaining dense vigorous turf at 3 inches (8 cm) or greater mowing height suppresses establishment, and reducing irrigation during summer stresses white clover because the root system is shallow. In many modern lawn management approaches, the species is retained as a turf component: it fixes atmospheric nitrogen and reduces fertilizer demand, tolerates low mowing heights, gives pollinator forage through the summer, and stays green during drought dormancy of turfgrass. Clover-inclusive lawns and clover-grass mixes are increasingly common in Pacific Northwest residential and municipal turf management.

Pruning

No pruning is applicable in a weed context. Stolons are pulled and all rooted nodes are removed to prevent regeneration. In clover-lawn or living-mulch settings where the species is retained, mowing at 2-3 inches (5-8 cm) maintains the stand and does not damage the stolon network.

✓ Toxicity

Non-toxic