Ivy Bee (Colletes hederae) – Identification, Life Cycle, Nesting Behaviour and Conservation

The Ivy Bee (Colletes hederae) is a solitary, ground-nesting bee recognised for its close association with flowering ivy. First recorded in Britain in Dorset in 2001, the species has expanded considerably across England and Wales, with records extending further north. Unlike honey bees and bumblebees, ivy bees do not establish social colonies or produce honey. Each female independently excavates and provisions her own underground nest.

Ivy bees are particularly noticeable during autumn, when many other bee species are becoming less active. Their emergence closely coincides with the flowering of common ivy (Hedera helix), which provides an important source of pollen and nectar. Adult bees have orange-brown hairs on the thorax and distinctive pale bands across a dark abdomen, sometimes causing them to be mistaken for wasps or honey bees.

Although ivy bees are solitary, large numbers may nest close together in suitable soil. These nesting aggregations can appear in lawns, garden banks, footpath edges and other areas of exposed ground. The concentration of activity can cause concern, particularly when numerous males are flying close to the soil surface.

Despite their numbers, ivy bees are generally non-aggressive and rarely sting. Their nesting activity is seasonal, and they provide valuable late-season pollination. Understanding their appearance, behaviour and nesting requirements helps property owners distinguish these beneficial insects from potentially troublesome wasps and recognise when intervention is unnecessary.

Ivy Bee – Quick Facts

Ivy Bee Taxonomy and Classification

The ivy bee belongs to the family Colletidae, a group of solitary bees commonly known as plasterer or cellophane bees.

These names refer to the specialised waterproof lining that females produce inside their underground brood cells.

The species was first scientifically described in 1993 and is closely related to other members of the Colletes succinctus species group.

How to Identify an Ivy Bee

Ivy bees possess several features that help distinguish them from other bees and wasps. Their autumn flight period and association with flowering ivy are particularly useful identification clues.

Medium-Sized, Robust Body

Females measure approximately 13 mm long, while males are usually smaller at around 10 mm. Their compact, relatively broad bodies are typical of many solitary bees.

Orange-Brown Hairy Thorax

The thorax is covered with dense ginger or orange-brown hairs. This gives ivy bees a noticeably furry appearance compared with many wasps.

Distinctive Abdominal Bands

The dark abdomen displays broad cream, yellowish or pale orange bands. These markings are often more prominent on freshly emerged adults.

Translucent Wings

Ivy bees have two pairs of translucent wings with visible veins. Their wings are folded over the body when resting.

Specialised Pollen-Carrying Hairs

Females collect pollen using dense hairs known as scopae, particularly on their hind legs. Unlike honey bees, they do not possess the same smooth pollen baskets.

Noticeable Autumn Activity

Ivy bees are most readily identified when visiting flowering ivy or nesting in exposed soil during September and October.

Male vs Female Ivy Bees

Males are often responsible for the most conspicuous activity around nesting areas. Groups may fly low over the ground while searching for newly emerging females.

Ivy Bee vs Honey Bee vs Common Wasp

Ivy bees may be mistaken for honey bees or wasps because of their size and contrasting abdominal markings.

The presence of numerous insects does not necessarily indicate a social colony. Ivy bees may nest close together while remaining independent.

Ivy Bees vs Other Colletes Bees

Several British solitary bees belong to the genus Colletes, and some closely resemble the ivy bee.

The Heather Colletes (Colletes succinctus) and Sea Aster Bee (Colletes halophilus) are among the species that may cause identification difficulties.

Useful clues include the time of year, flower choice, abdominal banding and nesting habitat.

Ivy bees are particularly associated with autumn-flowering ivy. However, these clues are not always sufficient for certain identification, especially when examining males or worn specimens.

Physical Adaptations of Ivy Bees

Ivy bees possess several specialised features that support their ground-nesting lifestyle and autumn feeding behaviour.

Dense Pollen-Collecting Hairs

Female ivy bees use specialised body hairs to transport pollen from flowers to their underground nests.

Strong Mandibles

Their mouthparts help excavate nesting tunnels in suitable soil.

Waterproof Brood Cell Lining

Females produce a secretion that forms a thin, cellophane-like lining around individual brood cells. This helps protect developing offspring and their food provisions from moisture.

Autumn Flight Adaptation

The species has a late-season activity period closely aligned with ivy flowering, allowing adults to exploit an important autumn food resource.

Ground-Nesting Behaviour

Individual females excavate tunnels and construct separate chambers for their offspring rather than relying on a communal nest.

Ivy Bee Life Cycle and Reproduction

The ivy bee has one generation each year, a reproductive pattern known as univoltinism.

Adults appear during late summer and autumn, while the immature stages develop underground between flight seasons.

1. Adult Emergence and Mating

Male ivy bees generally emerge before females, often from late August or early September.

They patrol nesting areas in search of emerging females.

When a female emerges, several males may gather around her while attempting to mate.

2. Nest Excavation

After mating, females search for suitable exposed or lightly vegetated soil.

Each female excavates an individual underground burrow containing several brood cells.

3. Egg-Laying

The female provisions each brood cell with pollen and nectar, primarily collected from ivy flowers.

She lays an egg in the cell before sealing it.

4. Larval Development

After hatching, the larva feeds on the stored pollen and nectar.

Development takes place inside the protected underground cell.

5. Overwintering and Pupation

The immature bee remains within its underground nesting environment through the winter.

Further development and pupation lead to the emergence of a new adult during the following autumn.

Ivy Bee Life Cycle Summary

Because only one generation is produced annually, suitable nesting habitat and access to flowering ivy are important for successful reproduction.

When Are Ivy Bees Active in the UK?

Ivy bees are mainly active from late August or September through October, with some individuals remaining visible into November.

The exact flight period varies with weather conditions and local ivy flowering times.

Activity is often most noticeable on warm, calm autumn days when adults visit flowers or move around nesting areas.

As the flowering season ends and temperatures decline, adult activity decreases.

Where Do Ivy Bees Build Their Nests?

Ivy bees excavate individual nests in soil rather than constructing hives or paper nests.

Common nesting locations include:

Sunny Soil Banks

South-facing banks can provide favourable warmth and drainage for nesting females.

Garden Lawns

Areas of short grass or exposed soil may support nesting where conditions are suitable.

Footpath Edges

Lightly vegetated soil alongside paths can provide suitable nesting opportunities.

Exposed Earth

Bare or sparsely vegetated patches of ground may attract females searching for excavation sites.

Sandy and Light Soils

Well-drained, relatively loose soils are particularly suitable for constructing underground tunnels.

Garden Borders and Slopes

Sunny borders or sloping ground near flowering ivy may provide both nesting habitat and convenient access to food.

Why Do Ivy Bees Nest in Large Groups?

Although ivy bees are solitary, many females may select the same favourable nesting location.

This creates a nesting aggregation, sometimes containing hundreds or thousands of individual burrows.

Each female remains responsible for her own nest and offspring.

There is no queen, worker caste or shared colony structure.

Large aggregations therefore should not be confused with the communal colonies established by social bees and wasps.

Do Ivy Bees Have a Queen?

No. Ivy bees do not have queens or workers.

Every reproductive female is capable of constructing and provisioning her own nest.

Their solitary social structure differs from that of honey bees and bumblebees, which live in organised colonies.

What Do Ivy Bee Nests Look Like?

Ivy bee nesting areas may contain numerous small openings in exposed soil.

Loose soil may be visible around some entrances, particularly where females are actively excavating.

Individual tunnels lead to brood cells containing pollen, nectar and developing offspring.

The underground nest is usually not visible without disturbing the soil.

Because several ground-nesting bee species create similar entrances, the presence of small holes alone does not confirm ivy bees.

Can Ivy Bees Damage Lawns or Gardens?

Ivy bee nesting activity generally causes little lasting damage.

Small soil openings and minor disturbances may be noticeable in lawns or banks during the nesting period.

However, these changes are usually cosmetic and do not represent the type of structural damage associated with destructive pests.

Once adult activity ends, the area can normally be left to recover naturally.

Do Ivy Bees Nest in Walls or Roof Spaces?

Ivy bees normally nest in soil.

They do not typically construct nests inside roof spaces, wall cavities or timber structures.

Bees repeatedly entering holes in brickwork or roof materials may belong to another species and should be identified before any action is taken.

What Do Ivy Bees Eat?

Adult ivy bees feed mainly on nectar from flowering ivy.

Females also collect ivy pollen to provide food for developing larvae.

The species has a particularly strong association with common ivy (Hedera helix), although adults may occasionally visit other late-flowering plants.

This dependence on autumn flowers helps explain the timing of the ivy bee’s annual emergence.

Why Is Flowering Ivy Important to Ivy Bees?

Common ivy produces flowers during autumn, when many other plants have finished flowering.

Its nectar and pollen provide an important food resource for ivy bees.

Female ivy bees rely heavily on ivy pollen when provisioning underground brood cells.

Removing flowering ivy during the active season can therefore reduce food availability for the bees and other late-season pollinators.

Do Ivy Bees Pollinate Other Plants?

Ivy bees are strongly associated with ivy, but adults may visit other autumn-flowering plants.

Their most important recognised pollination relationship is with common ivy.

By transferring pollen between ivy flowers, they contribute to the plant’s reproductive cycle.

Ivy berries subsequently provide a food resource for birds and other wildlife during colder months.

Are Ivy Bees Aggressive?

No. Ivy bees are generally non-aggressive.

They do not have a communal colony to defend, and their behaviour is mainly focused on feeding, mating and nest construction.

Even when numerous bees are flying around a nesting area, they are not usually attempting to attack people.

Avoid handling or trapping them, and give active nesting areas space where practical.

Can Ivy Bees Sting?

Female ivy bees possess a sting, but stinging is extremely uncommon and would generally be associated with direct handling or trapping.

Male ivy bees cannot sting.

People with known severe allergies to bee stings should avoid unnecessary contact with bees and follow their medical advice.

Are Ivy Bees Dangerous to Children and Pets?

Ivy bees normally present little risk when left undisturbed.

They are not aggressive nest defenders, and males cannot sting.

However, children and pets should be discouraged from handling bees or repeatedly disturbing active nesting entrances.

If a nesting area is located directly beside a frequently used play space, a temporary change of route or activity may be appropriate until the flight season ends.

Do Ivy Bees Spread Diseases?

Ivy bees are not recognised as significant transmitters of human disease.

Their presence in gardens is primarily an ecological benefit rather than a public health concern.

They do not infest household food, reproduce inside buildings or feed on humans.

Common Signs of Ivy Bee Activity

Ivy bees are most easily recognised through a combination of appearance, season and behaviour.

• Bees visiting flowering ivy: Increased activity around ivy flowers during autumn.
• Small holes in soil: Individual nest entrances in lawns, banks or exposed earth.
• Low-flying bees: Groups of males patrolling nesting areas.
• Ginger-coloured thoraxes: Hairy bees with contrasting abdominal bands.
• September and October activity: Large numbers appearing later in the year than many other solitary bees.
• Seasonal decline: Activity reducing as autumn progresses.

These signs can suggest ivy bees, although accurate identification may require a clear photograph or specialist examination.

Why Are There So Many Bees Flying Over My Lawn?

Large numbers of bees flying just above the ground in autumn may indicate a solitary bee nesting aggregation.

Male ivy bees often patrol these areas looking for females emerging from underground nests.

The activity can resemble a swarm, but it is not the same as a honey bee swarm or an organised wasp colony.

Where the insects are confirmed as ivy bees, leaving the nesting area undisturbed is normally the most suitable response.

Why Do Ivy Bees Suddenly Appear in September?

Ivy bees have a highly seasonal adult life cycle.

Most of the year is spent developing underground, while adults emerge during the late summer and autumn flowering period.

Large numbers can therefore appear within a relatively short period, especially where many nests are concentrated in one location.

This sudden activity is a normal feature of their annual reproductive cycle.

How Long Do Ivy Bee Nesting Aggregations Last?

Visible adult nesting activity generally lasts for a limited period during autumn.

Individual bees are not active throughout the entire year.

However, developing offspring remain underground after the adult flight season ends, and suitable nesting areas may be used again in subsequent years.

It is therefore important not to assume that the underground nests are empty immediately after adult activity stops.

Are Ivy Bees Native to the UK?

Ivy bees are native to parts of continental Europe but are relatively recent arrivals in Britain.

The first British record was made in Dorset in 2001.

Since then, the species has expanded its distribution across much of England and Wales, with records also extending into Scotland.

It is an established part of the UK’s increasingly diverse solitary bee fauna, although it is classified as a relatively recent colonist rather than a long-established native species.

Why Are Ivy Bees Spreading Across Britain?

The ivy bee has expanded its range considerably since it was first recorded in Britain.

Several factors may contribute to its successful establishment, including the widespread availability of flowering ivy and suitable nesting habitats.

Changing climatic conditions may also influence its ability to survive and reproduce in more northerly areas.

However, its range expansion should not be attributed to any single factor without considering local environmental conditions and population records.

Natural Predators and Ecological Relationships

Ivy bees interact with several other organisms in their environment.

Birds and spiders may prey on adult bees, while certain parasitic or cleptoparasitic insects exploit solitary bee nests.

Some specialist insects develop at the expense of the food provisions or offspring within brood cells.

These relationships form part of the wider ecology of ground-nesting solitary bees.

Why Are Ivy Bees Important for Biodiversity?

Ivy bees provide valuable pollination services during a period when relatively few other solitary bee species remain active.

They help pollinate flowering ivy, supporting the development of berries that become an important winter food source for wildlife.

Their presence also contributes to the diversity of pollinating insects found in gardens, parks and countryside habitats.

Preserving suitable nesting ground and allowing ivy to flower can help support these ecological benefits.

Should Ivy Bee Nests Be Removed?

In most circumstances, ivy bee nests should be left undisturbed.

They are beneficial pollinators, generally non-aggressive and active above ground for only a limited period each year.

Removing or destroying their nests is usually unnecessary and may harm developing offspring.

If a nesting aggregation is causing concern because of its location, professional identification and advice can help determine whether any practical measures are needed.

How to Manage Ivy Bees in Gardens

Where ivy bees are confirmed, the preferred approach is usually to accommodate their temporary activity.

Leave Active Nesting Areas Undisturbed

Avoid digging, flooding or covering soil containing active nests.

Keep a Reasonable Distance

Allow bees to enter and leave their burrows without repeated disturbance.

Use an Alternative Route

If nests are beside a frequently used path, consider temporarily walking around the area.

Avoid Unnecessary Insecticides

Do not spray beneficial bees or flowering ivy simply because large numbers are present.

Allow Ivy to Flower

Where practical, avoid cutting back flowering ivy during the main autumn feeding period.

Seek Identification if Unsure

If insects are entering a building or behaving defensively, they may not be ivy bees. Accurate identification should come before management decisions.

Can You Prevent Ivy Bees from Nesting in a Lawn?

Ivy bees are attracted to suitable soil conditions, particularly exposed or lightly vegetated areas that are warm and relatively well drained.

Changes to garden landscaping may influence future nesting opportunities, but disturbing active nests is not recommended.

Because ivy bees rarely cause meaningful damage, prevention is generally unnecessary.

If a particular area must be altered for another legitimate purpose, the timing should take account of the bees’ underground development.

Why Insecticide Treatment Is Usually Unnecessary

Ivy bees do not normally present the risks associated with defensive wasp colonies or destructive household pests.

Routine insecticide treatment would provide little practical benefit and could harm beneficial pollinators.

Applications near flowering ivy may also affect other insects using the same food source.

Identification, reassurance and temporary avoidance of active nesting areas are normally more appropriate.

Ivy Bees in Commercial Grounds and Public Spaces

Ivy bees may establish nesting aggregations in parks, landscaped business premises, school grounds and other managed outdoor areas.

Large numbers of bees can attract attention from visitors or staff, particularly when the insects are flying low over paths and lawns.

Where the species is confirmed, temporary signs or minor changes to pedestrian access may be sufficient to manage concerns.

Any management decision should consider the bees’ generally non-aggressive behaviour and ecological value.

Professional Ivy Bee Identification – Youngs Pest Control

Youngs Pest Control understands that large numbers of bees around a property can be concerning, particularly when their species is unknown.

Our approach to suspected ivy bee activity prioritises identification and responsible advice rather than automatic treatment.

1. Inspection and Assessment

We consider where the insects are active, the time of year and whether they are using soil, flowering plants or structural openings.

2. Species Identification

We assess identifying characteristics and behaviour to distinguish ivy bees from wasps, honey bees and other solitary bees.

3. Appropriate Management Advice

Where ivy bees are confirmed, leaving the nesting area undisturbed will usually be the preferred option. Other concerns can be assessed according to the species and circumstances.

4. Prevention and Practical Guidance

We can discuss ways to reduce unnecessary disturbance and help property owners understand the temporary nature of seasonal bee activity.

For information about other pest-related concerns, visit our professional pest control services page.

Areas We Cover

Youngs Pest Control provides pest identification and management services throughout Greater Manchester, Cheshire and Merseyside. When ivy bees are involved, responsible advice and preservation of beneficial pollinators are important considerations.

• Pest Control in Greater Manchester – including Manchester, Salford, Bolton, Stockport, Trafford and surrounding areas.
• Pest Control in Cheshire – including Warrington, Wilmslow, Knutsford, Northwich, Macclesfield and nearby communities.
• Pest Control in Merseyside – including Liverpool, St Helens, Bootle, Crosby, Huyton, Kirkby and surrounding areas.

Frequently Asked Questions About Ivy Bees

1. What is the scientific name of the ivy bee?

The ivy bee is scientifically known as Colletes hederae.

2. Are ivy bees native to the UK?

They are relatively recent arrivals, first recorded in Britain in Dorset in 2001.

3. How big are ivy bees?

Females are approximately 13 mm long, while males are usually around 10 mm.

4. What do ivy bees look like?

They have ginger-coloured thoraxes and dark abdomens with broad pale bands.

5. Are ivy bees solitary?

Yes. Each female builds and provisions her own nest.

6. Why do ivy bees nest together?

Many females may independently choose the same suitable patch of soil.

7. Do ivy bees have a queen?

No. They do not have queens, workers or organised social colonies.

8. Where do ivy bees nest?

They nest underground in exposed or lightly vegetated soil, often on sunny banks and lawns.

9. Do ivy bees nest in walls?

Not normally. They are primarily ground-nesting bees.

10. When are ivy bees active?

They are mainly active from late summer through autumn, often September to October.

11. Why are ivy bees common in September?

Their emergence coincides with the autumn flowering of ivy.

12. What do ivy bees eat?

They feed mainly on ivy nectar and collect ivy pollen for their offspring.

13. Do ivy bees make honey?

No. They are solitary bees and do not produce honey stores.

14. Can ivy bees sting?

Females can sting but rarely do. Males cannot sting.

15. Are ivy bees aggressive?

No. They are generally non-aggressive and do not defend communal colonies.

16. Are ivy bees dangerous to children?

They normally pose little risk when left undisturbed, but children should avoid handling them.

17. Can ivy bees damage lawns?

Their small nesting holes usually cause only minor cosmetic disturbance.

18. How long do ivy bee nests remain active?

Visible adult activity is seasonal, although developing offspring remain underground afterwards.

19. Do ivy bees return every year?

Suitable nesting areas may be used in successive years.

20. How many generations do ivy bees produce?

They produce one generation per year.

21. Are ivy bees good for gardens?

Yes. They are valuable late-season pollinators.

22. Should I remove ivy bee nests?

Usually not. Leaving them undisturbed is normally the best approach.

23. Can I spray ivy bees with insecticide?

Unnecessary spraying is strongly discouraged because ivy bees are beneficial pollinators.

24. How can I encourage ivy bees?

Allow ivy to flower and retain suitable undisturbed nesting habitat.

25. When should I contact a pest control professional?

Seek identification advice if you are unsure whether the insects are ivy bees, wasps or another species.

Ivy Bee Identification and Responsible Pest Advice – Youngs Pest Control

Ivy bees are important autumn pollinators that rarely require pest control intervention. Although large nesting aggregations can initially appear concerning, their behaviour is generally peaceful and their activity is seasonal.

Youngs Pest Control is a family-run pest management company with over 35 years of experience, providing professional services throughout Greater Manchester, Cheshire and Merseyside.

We are fully insured and members of the National Pest Technicians Association. Our approach begins with identifying the insect and understanding its behaviour before recommending an appropriate course of action.

If you have noticed large numbers of bees around flowering ivy, small holes in your lawn or unusual insect activity near your property, contact our team for advice on identification and responsible management.

For further information about this beneficial species, visit the Bumblebee Conservation Trust’s ivy bee identification guide.

Telephone: 0161 776 9832

Mobile: 07845 815 261