Pollination Services
Part of Beekeeping
Managed pollination — deliberately moving hive colonies to crop fields at bloom time — is one of the most powerful yield multipliers available without any additional inputs. A beekeeper who coordinates hive placement with neighboring farmers can dramatically increase regional food production at near-zero additional cost, while generating goodwill, trade opportunities, and potentially income from pollination rental. Understanding how to move hives safely, time deployments correctly, and protect bees during crop spraying is essential for maximizing this service.
The Case for Managed Pollination
Many crops are partially or entirely self-sterile — they require pollen from another flower (often another variety) to set fruit. Even in self-fertile crops, bee pollination dramatically increases fruit set, fruit size, seed number, and yield uniformity.
Wild bee populations have declined significantly in many regions due to habitat loss, pesticide use, and disease. In landscapes where wild pollinator populations are insufficient to pollinate all available flowers, managed honeybee colonies fill the deficit. Even where wild bees are present, adding managed colonies at bloom time reliably increases yields.
For detailed yield impact figures by crop, see Pollination Value.
Timing Deployment
Placing hives too early (before bloom) or too late (after peak bloom) significantly reduces pollination effectiveness.
The 10–20% Rule
Move hives into position when 10–20% of the crop’s flowers are open. At this density of bloom, bees establish strong foraging patterns on the crop before the peak of bloom. If you wait until full bloom, bees may already be committed to foraging other sources.
Removal Timing
Keep hives in position until 80–90% of flowers have closed or dropped. Removing hives during bloom abandons late-opening flowers, which often include the largest potential fruits.
Crop-Specific Timing Guide
| Crop | Bloom Duration | Optimal Hive-in Timing | Notes |
|---|---|---|---|
| Apple | 10–14 days | First 10% of flowers open | Most apple varieties require cross-pollination |
| Pear | 7–10 days | First 10% open | More cold-tolerant than apple; bees may be inactive on cold days |
| Cherry (sweet) | 10–14 days | First 15% open | Cross-pollination essential; single-variety orchards fail |
| Strawberry | 3–5 weeks (successive) | Continuous during flowering | Hives in or adjacent to polytunnels very effective |
| Blueberry | 2–3 weeks | First 10% open | Blueberry flowers require buzz-pollination; bumblebees superior, honeybees useful |
| Oilseed rape (canola) | 3–5 weeks | First 10–20% open | Large hectarage; 1–2 hives/ha sufficient |
| Field beans | 3–4 weeks | First 10% open | Bees must push through petals; strong colonies more effective |
| Cucumber/courgette | 6–8 weeks (successive) | Continuous during flowering | Male and female flowers on same plant; bees must visit both |
| Sunflower | 2–3 weeks | First 10% open | Self-incompatible varieties benefit most |
| Clover (seed crop) | 4–6 weeks | First 10% open | Requires very high bee density (4–8 hives/ha) for commercial seed |
Spring crops (apple, pear, cherry) bloom early when weather is often cold and wet. Bees forage actively only above about 12–14°C. Plan for supplemental pollination strategy (hand pollination of a fraction of flowers) if the weather is poor during the critical bloom window.
Colony Requirements for Pollination
Not all colonies are equally effective pollinators. Strong, healthy colonies with a large foraging force are dramatically more productive than weak ones.
Minimum colony requirements for contract pollination work:
- Bees covering at least 8 Langstroth frames (6 in a nuc)
- Active queen in lay
- No visible signs of disease (American foulbrood, European foulbrood, sacbrood)
- Entrance open fully for maximum forager traffic
- No treatment with miticides or antibiotics during active bloom (residue risk)
| Colony Condition | Relative Pollination Effectiveness |
|---|---|
| Strong, 10 frames | 100% baseline |
| Moderate, 7–8 frames | 70–80% |
| Weak, 4–5 frames | 35–50% |
| Recently split (rebuilding) | 20–30% |
Moving Hives Safely
Preparation (Night Before)
- Stop up the entrance using a foam insert, breathable mesh stapled over the entrance, or a dedicated moving screen.
- Ensure ventilation through the crown board or a screened roof. A confined hive generates significant heat — bees can die within 30–60 minutes in a sealed, unventilated hive on a warm day.
- Check that combs are perpendicular to the direction of travel (frames should run front-to-back relative to vehicle motion) — this reduces comb breakage and bee crushing during transport.
- Secure the hive with ratchet straps around the entire stack.
Transport
- Move at night when all foragers are inside. Bees that return to an empty site pile on the ground — moving at night means you capture the full workforce.
- Drive smoothly. Avoid hard braking and sharp corners.
- If transporting multiple hives, stack no more than 3 high and tie stacks together.
The three-kilometre rule: if you move a hive less than 3 km from its original location, foragers will fly back to the old spot and cluster on the ground, unable to find the hive. Either move more than 3 km, or keep the hive more than 3 km away for at least 3 weeks before moving it to a nearby location.
Positioning at the New Site
- Place hives at the field edge, entrance facing into the crop, no more than 100 m from the nearest flowers for best results.
- Ensure shade or wind protection if weather is hot.
- For large fields (more than 5 ha), place hives in groups of 4–6 at multiple points along the perimeter.
- Open entrances fully at dawn after arrival (bees will have calmed during overnight transit).
Protecting Bees During Pollination
Pesticide exposure during pollination is a major cause of managed bee deaths and the primary source of tension between beekeepers and farmers.
Pesticide Protocols
Non-negotiable rules when hives are present:
- No insecticide applications during bloom — even products labeled “bee-safe” harm larval development when brought back as contaminated pollen.
- Herbicide and fungicide applications must be discussed — some fungicides (particularly DMI fungicides) synergize with sublethal insecticide doses. Apply only at dusk when bees are in the hive.
- Minimum 48 hours notice before any spray application near hives.
If spraying is unavoidable:
- Close hive entrances at dusk after bees return.
- Leave closed entrances overnight (ensure ventilation through screened crown board).
- Open at dawn after spray has dried and degraded.
- This protects from direct kill; it does not protect against contact with treated pollen over subsequent days.
Establish written agreement with the farmer before deploying hives: spray notification, timing of applications, and who is responsible for colony losses if protocols are violated. This protects both parties and professionalizes the relationship.
Pollination as a Trade Resource
In a resource-constrained rebuilding scenario, pollination services have significant exchange value:
- A beekeeper with 10 well-managed colonies can poll a significant area of market garden crops each season.
- Pollination fees (where applicable) are typically charged per hive deployed — the crop benefit usually far exceeds the rental cost.
- Non-monetary trade: hive rental for crop pollination can be exchanged for grain, labor, mechanical work, or any other commodity the beekeeper needs.
- Building relationships with farmers who grow the crops bees need (clover, fruit trees, oilseed) creates a mutual-benefit structure: farmer gets pollination, beekeeper gets access to superior forage.
Pollination Services Summary
Move hives into crop fields when 10–20% of flowers are open and remove them when 80–90% have closed. Use strong colonies of at least 8 frames for effective pollination. Move hives at night using the correct entrance closure and ventilation, and obey the 3 km minimum relocation rule. Establish written pesticide protocols with farmers before deploying — no insecticides during bloom, 48 hours notice minimum for any spray. Pollination services have genuine exchange value in both market and barter economies; building relationships with farmers who grow bee forage creates mutual benefit for both parties.