How Bees and Flowers Benefit Each Other

How the relationship works

A flower’s pollen contains the male reproductive cells of a flowering plant. For many species, pollen must reach the receptive part of a flower—often the stigma—for fertilization to occur. After fertilization, the plant may develop seeds, and in some plants the surrounding ovary develops into fruit.

Bees help with this process as they forage. A bee lands on a flower to drink nectar or gather pollen; grains can stick to its hairy body. When it visits another flower of the same plant species, some pollen may rub off onto that flower’s stigma. If the pollen is compatible and conditions are right, it can contribute to fertilization.

This transfer is called pollination. It is not the same as fertilization: pollination is the delivery of pollen, while fertilization is a later biological process inside the flower. A bee can carry pollen without successfully pollinating a flower—for instance, if it visits a different species or pollen fails to reach the stigma.

What bees gain from flowers

Flowers are important sources of food for bees. Nectar is a sugary liquid that supplies energy for flight and other activity. Pollen contains protein, fats, and other nutrients; bees use it especially to provision developing young. The exact nutritional value differs among plant species, which is one reason a varied supply of flowers can matter to bee colonies and solitary bees alike.

Foraging bees collect these resources in different ways. Honey bees can carry nectar internally and pack pollen into baskets of stiff hairs on their hind legs. Bumble bees and many solitary bees also transport pollen on body hairs or specialized structures. Some bees collect oils or other floral resources, but nectar and pollen are the familiar main rewards.

Not every bee uses every flower. Differences in body size, tongue length, behavior, and the flower’s shape affect which resources a bee can reach. A deep, narrow flower may be easier for a long-tongued bee to feed from, while an open flower can be accessible to many kinds of insects.

What flowers gain from bees

When a bee transfers pollen between compatible flowers, it can help a plant produce seeds. Seeds allow plants to reproduce and spread to new places. In flowering plants that produce fruits, successful pollination can also support fruit development. This is why bees are important pollinators for many wild plants and crops.

Bees are effective visitors partly because their bodies are often hairy and can pick up pollen. Their foraging behavior also brings them repeatedly to flowers, sometimes of the same species, as they seek a rewarding food source. A flower may encourage visits with nectar, scent, color, or a shape that guides an insect toward its reproductive parts.

Plant reproduction is not always improved simply by more visits. Some plants need pollen from a different individual of the same species; others can self-pollinate. A visit may also be ineffective if pollen is deposited in the wrong place or at the wrong time. The outcome depends on the plant’s biology as well as the bee’s behavior.

Different flowers, different pollinators

Bees are prominent pollinators, but they are not the only ones. Butterflies, moths, flies, beetles, birds, bats, and wind can also move pollen, depending on the plant. Some plants rely mainly on wind and do not offer the nectar or showy petals that attract bees.

Flowers and their pollinators often have traits that work well together, but it is misleading to assume every flower evolved for a single bee species. Many flowers can be visited by several kinds of insects, and a bee may visit many plant species. The match can be specialized or flexible.

Open, shallow flowers can make nectar and pollen accessible to a broad range of insects.
Tubular flowers may suit pollinators that can reach nectar deep inside.
Wind-pollinated flowers often release airborne pollen and may have little need to attract bees.

Why the partnership matters in gardens and nature

Pollination supports the reproduction of many native plants and helps maintain food and habitat for wildlife. In gardens and farms, bee visits can contribute to the production of crops such as squash, apples, and blueberries, though the degree of dependence varies by crop and growing conditions. Some crops are pollinated by other insects or can produce without animal pollination.

People who want to support local pollinators can provide a range of flowers that bloom at different times, favor plants suited to the local region, and avoid treating every insect as a pest. A garden with different flower shapes and colors can offer food to a wider variety of bees. Nesting habitat also matters: many bee species do not live in hives, but nest in the ground, cavities, or plant material.

There is no single “best bee flower” for every place. Local climate, soil, growing conditions, and the bee species present all influence what will help. A cooperative extension service or native-plant organization can often provide region-specific plant lists.

Common misconceptions

One common misconception is that bees visit flowers only to pollinate them. Bees are seeking food; pollination is a consequence of how they gather it. Another is that every flower depends on bees. Many plants use different pollinators or wind, and some can reproduce without animal-mediated pollen transfer.

It is also inaccurate to say that every bee visit produces fruit or seeds. The pollen must be suitable for that plant, reach the right part of the flower, and successfully participate in reproduction. Weather, flower availability, and the timing of bloom can influence both foraging and pollination.

Frequently Asked Questions

Do bees need flowers to survive?

Many bees rely on flowers for nectar and pollen, which supply energy and nutrients. Their needs differ by species and life stage, but flowering plants are a central food source for most familiar bees.

Do flowers need bees to reproduce?

Some flowering plants depend on bees or other animals to transfer pollen, but others are pollinated by wind, other pollinators, or self-pollination. The answer depends on the plant species.

Do bees pollinate every flower they visit?

No. A bee may visit a flower without moving compatible pollen to its stigma. Even when pollen is transferred, successful fertilization and seed or fruit development are not guaranteed.

What do bees collect from flowers?

Most commonly, bees collect nectar for energy and pollen as a source of nutrients. Some species also gather other floral resources, such as oils.

How can I make a garden more useful to bees?

Grow a range of locally suitable flowers with overlapping bloom times, and consider nesting places as well as food. Avoid assuming that one plant or a decorative bee hotel will support every bee species.

Further reading: U.S. Forest Service. Details can change, so check the official page for anything that matters to you. Spotted a mistake? Tell us. How we write an answer.