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Helping pollinators and No Mow May

Letting a lawn flower through No Mow May can boost the nectar available to bees at a lean time of year, and it has made pollinator decline visible to millions. But it works best as an entry point to bigger changes—native flowers, undisturbed nesting habitat, and no pesticides—that support pollinators across the whole season.

Scope: General pollinator-gardening background with the No Mow May campaign as one example; the most effective actions vary by climate, region, and native flora. This is not a prescriptive lawn-management or agricultural guide. · Last updated

A bumblebee feeding at a clover flower growing in unmown lawn grass.
Image: Bombus bimaculatus two-spotted bumblebee on clover 4039 by ImagePerson · CC BY 4.0 · Resized and converted to WebP; displayed with a crop.
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Why a flowering lawn helps

Reducing mowing lets low plants such as clovers, dandelions, and other 'weeds' flower, and conservation charities report that this can substantially increase the nectar a lawn offers in spring, when many pollinators are emerging and food can be limited. The campaign that popularized this, No Mow May, also does something subtler: it makes the needs of bees, hoverflies, and butterflies visible to households and turns a passive lawn into habitat people notice. [1][2]

A bee dusted with yellow pollen while visiting the center of a squash flower.
Field frame · Editorial contextA contextual view from How pollination works.Image: Bee gathering pollen on squash flower (51315552776) by Mara Koenig / U.S. Fish and Wildlife Service · Public domain
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One month is a starting point

Pollinators are active for far longer than May, so a single month of long grass cannot carry them through the year. Researchers and gardening bodies note that benefits depend on what actually flowers and on what happens next; a lawn mown flat on the first of June loses much of the gain. Thinking of the campaign as an on-ramp—an easy, visible first action that leads to lasting habitat—reflects the evidence better than treating it as a finished solution. [2][3]

A monarch butterfly nectaring on orange flowers in a pollinator garden at Green Lake National Fish Hatchery.
Field frame · Editorial contextA contextual view from Watching a pollinator garden.Image: Green Lake NFH monarch butterfly pollinator garden by Fred Yost / USFWS · Public domain
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Plant for the whole season

The most reliable help is a succession of flowers from early spring to autumn, weighted toward regional native plants that local pollinators evolved alongside. A mix of shapes and bloom times supports short- and long-tongued species and both generalists and specialists. Even small areas count: a diverse border, a patch of native wildflowers, or a permanently reduced-mow area provides more consistent forage than a lawn that is briefly wild and then cut. [3][4]

A front-facing dragonfly perched on a green leaf in close-up.
Field frame · Editorial contextA contextual view from Watching dragonflies and damselflies.Image: Dragonfly watching me by Umberto Salvagnin · CC BY 2.0 · Resized and converted to WebP; displayed with a crop.
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Nesting sites and no pesticides

Flowers are only half the picture. Most bee species are solitary and nest in bare ground, hollow stems, or old wood, so leaving undisturbed soil, stems, and log piles matters as much as blooms. Avoiding insecticides—and herbicides that remove flowering 'weeds'—prevents direct harm and protects food plants. Water, reduced tidiness, and connected habitat across neighboring gardens round out a genuinely pollinator-friendly space that works long after May ends. [4][5]

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Where this guide comes from

Source-checked editorial guide. Last updated . This guide teaches identification and field skills; it is not a substitute for expert verification when it matters.