Late spring and early summer mark a critical period for pollinators. By May and June, many early bloomers are fading, and bees increasingly rely on secondary forage sources. Common weeds in lawns, gardens, and pastures—including clover, sweet clovers, vetches, plantains, mallow, and selfheal—provide both nectar and pollen that sustain honey bees, bumblebees, and solitary pollinators. Some of these plants produce abundant seeds and seedlings, ensuring future blooms if patches are left undisturbed. Thoughtful management, avoiding overuse of herbicides during flowering, allows these plants to fill ecological gaps while still maintaining garden or crop control. Retaining portions of these bloomers strategically contributes to pollinator health, ensures continuity of forage, and reduces chemical inputs, supporting biodiversity and sustainable gardening practices.

1. Clover (Trifolium repens / T. pratense)

Clover is perhaps the most well-known bee-friendly weed of late spring. Both white and red clover produce dense inflorescences packed with nectar and pollen, forming a critical food source for honey bees and bumblebees when early spring flowers diminish. Field studies show hives located near clover patches experience stronger brood development and increased vitellogenin in worker bees, indicating improved nutrition. Clover seeds germinate readily, and seedlings quickly establish in lawns, meadows, or disturbed garden areas. While some gardeners see it as a nuisance, leaving small clusters or edges allows pollinators access while maintaining manageable ground coverage. Limiting herbicide use and mowing selectively ensures flowers are available throughout peak bloom. In addition, red clover can serve as a companion plant, providing nitrogen fixation for soil enrichment. By tolerating patches of clover, gardeners and growers enhance pollinator forage continuity, supporting hives and contributing to biodiversity in cultivated landscapes. Clover’s dual role as a nitrogen-fixing plant and a bee forage resource makes it indispensable in late spring.

2. White Sweet Clover (Melilotus alba)

White sweet clover produces tall spikes of white, fragrant flowers beginning in May, offering rich nectar for honey bees and other pollinators. Bees often prioritize sweet clover due to its abundant sugar content, and honey flows from areas dominated by sweet clover are noted for high yield. Seeds remain viable in soil for several years, with seedlings emerging on disturbed soils, pastures, or edges of gardens. While aggressive if uncontrolled, allowing selective stands preserves critical forage. Avoiding herbicides during bloom protects bees from exposure. The plant also fixes nitrogen, benefiting soil and neighboring crops. Gardeners can mow after peak bloom to prevent excessive spread while leaving enough flowers for bees. Its ability to support pollinator nutrition and human-managed ecosystems makes white sweet clover a valuable late spring resource.

3. Yellow Sweet Clover (Melilotus officinalis)

Yellow sweet clover flowers slightly earlier than white sweet clover but similarly provides abundant nectar and pollen. Bees, especially honey bees, exploit the tubular flowers for high-sugar nectar that supports brood rearing and hive strength. Seeds develop in slender pods, and seedlings can rapidly establish on open ground. Gardeners and growers should leave limited stands near edges or pathways to maintain forage while preventing invasive spread. Managing growth through selective mowing or removal after bloom protects pollinators while controlling weed density. Yellow sweet clover enhances biodiversity, supports soil fertility through nitrogen fixation, and bridges forage gaps between early spring weeds and mid-summer blooms. By tolerating strategic patches, gardeners sustain pollinators and contribute to a healthy ecosystem.

4. Mallow (Malva neglecta)

Common mallow produces soft pink-lavender blooms in May and June, attracting honey bees and wild pollinators. Its seeds form small disc-shaped pods that persist in soil, and seedlings sprout quickly in compacted or disturbed areas. Although often considered a lawn weed, tolerating small clusters during bloom ensures nectar and pollen availability. Hand-pruning or mowing after flowering can control spread while preserving pollinator access. Mallow complements other late-spring bloomers by providing forage when some early weeds have finished flowering. Bees frequently forage on both pollen and nectar from mallow flowers, making it a valuable resource for brood development. Gardeners balancing control and tolerance contribute to both pollinator health and ecological stability in garden or pasture settings.

5. Common Vetch (Vicia sativa)

Common vetch produces striking purple flowers in late spring that attract honey bees and bumblebees. Its tubular blooms are rich in nectar, supporting foraging and hive energy stores. Seeds develop in slender pods, and seedlings establish in open soils or along fence lines. While vetch can form dense mats or climb structures, leaving selective patches along edges provides forage without compromising garden management. Bees use both pollen and nectar from vetch flowers, aiding brood rearing. Partial tolerance of vetch blooms complements nitrogen-fixing benefits and enhances pollinator resources, bridging forage gaps between spring and summer. Mowing after flowering prevents excessive spread while maintaining ecological benefit.

6. Creeping Charlie (Glechoma hederacea)

Creeping Charlie spreads via stolons and produces small purple flowers in late spring. Despite being considered a lawn weed, its flowers provide important nectar and pollen for honey bees and small wild pollinators. Seeds are small and numerous, and seedlings readily emerge in lawns or disturbed areas. Gardeners can allow limited patches near pathways or edges to sustain bee forage while controlling spread. Retaining flowers reduces the need for herbicide, supports late-season brood, and enhances urban or suburban biodiversity. Its creeping habit allows for selective retention, balancing weed management with ecological contribution.

7. Buckhorn Plantain (Plantago lanceolata)

Buckhorn plantain features spikes of tiny flowers visited by bees for pollen in late spring. Seeds are long-lived in soil, and seedlings appear in compacted turf or disturbed garden patches. Selective retention of flowering spikes supports honey bee foraging while maintaining garden control. Avoiding herbicides during bloom ensures safe access. Buckhorn plantain provides both nectar and pollen, filling gaps when other weeds are no longer flowering. Maintaining edge colonies or small lawn patches balances weed management with pollinator support. The species is resilient and easy to integrate into a sustainable garden plan.

8. Common Chickweed (Stellaria media, late)

Some chickweed patches continue flowering into May and June. Bees forage the small white blooms for pollen and nectar when other forage is scarce. Chickweed produces many tiny seeds, and seedlings appear rapidly in moist, disturbed soil. Retaining select patches provides pollinators with additional resources, and hand-thinning or mowing after flowering controls excessive spread. This plant’s small stature makes it easy to tolerate in gardens without interfering with main crops. Allowing late blooms preserves forage continuity and reduces the need for chemical interventions, supporting early summer pollinator health.

9. Black Medick (Medicago lupulina)

Black medick blooms in late spring with small yellow flowers visited by honey bees. Seeds germinate in lawns, pastures, or disturbed soils, producing numerous seedlings. Partial tolerance of small patches ensures forage availability while minimizing invasive spread. Bees gather both nectar and pollen from the flowers, supporting hive health during forage gaps. Avoid spraying herbicides during flowering to preserve pollinator access. Black medick complements clover species, enhancing nitrogen fixation, floral diversity, and pollinator nutrition in gardens, lawns, and agricultural edges.

10. Selfheal (Prunella vulgaris)

Selfheal produces small purple hooded flowers attractive to honey bees and bumblebees. Seeds are in small capsules, and seedlings establish in lawns or lightly disturbed areas. Allowing patches to bloom provides nectar and pollen during late spring when many early-season weeds have finished flowering. Strategic mowing or trimming after bloom prevents spread while retaining forage. Bees use both nectar and pollen from selfheal flowers to support brood development. Its resilience, aesthetic blooms, and bee support make it valuable in gardens, meadows, and pasture edges, sustaining pollinator populations until mid-summer blooms emerge.

References (10)

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