What's Happening in the Hive
Spring is the season of transformation. Your colony shifts from survival mode to explosive reproduction, and understanding this biology helps you manage effectively.
The colony's spring agenda:
- Replace winter bees: The long-lived "winter bees" that kept the cluster alive are dying off. New spring bees emerge to replace them.
- Ramp up brood production: The queen accelerates laying from a few hundred eggs/day to 1,500-2,000/day at peak.
- Build workforce for the flow: Nectar is coming. The colony needs foragers ready to collect it.
- Reproduce (swarm): Biologically, colonies want to split. Your job is to manage this impulse.
The danger zone: In early spring, the colony is at its most vulnerable. Winter stores are depleted, the population is at its lowest (before new bees emerge), and cold snaps can kill. This is when starvation claims colonies that almost made it.
Early Spring (March): First Checks
When to do your first inspection: Wait for a day that's at least 55°F (13°C) with low wind. You're not doing a deep diveâjust confirming the basics.
March Inspection Goals
Don't over-inspect: It's tempting to dig deep, but every minute with the hive open bleeds heat. Do quick, focused checks in early spring.
Emergency feeding: If the colony is light on stores and nectar isn't flowing yet, feed 1:1 sugar syrup (equal parts sugar and water by weight). This stimulates brood production and prevents starvation.
Mid-Spring (April): Explosive Growth
April is when things get excitingâand hectic. The colony's population explodes, and swarm preparations begin.
What's happening:
- First major pollen sources (maple, willow, dandelion) trigger brood ramp-up
- Drones appear (the males needed for mating)
- Population grows rapidlyâcan double in a month
- Congestion triggers swarm impulse
â ď¸ April Management Tasks
- Reverse brood boxes (Langstroth): Move the bottom box to top, top to bottom. This redistributes space and delays swarming.
- Add supers early: Better too early than too late. If the brood nest is 80% drawn out, add space.
- First mite count: Do an alcohol wash. If >1% (3 mites per 300 bees), treat before the population explodes.
- Install packages/nucs: Late March through April is prime time for new colonies.
Inspect weekly: During April and May, you need to check for swarm cells every 7-10 days. A colony can go from "thinking about swarming" to "gone" in under two weeks.
Late Spring (May): Swarm Season Peak
May is peak swarm season in most of North America. It's also when the nectar flow really kicks in.
Your May priorities:
- Swarm checks every 7-10 days: Look for queen cells (peanut-shaped, usually on frame bottoms or edges)
- Super management: Add supers before they're needed. A honey-bound brood nest triggers swarming.
- Split if necessary: If you see swarm cells, consider splitting the colony yourself
- Monitor for disease: Rapid brood expansion can reveal AFB or EFB
Signs a swarm is imminent:
- Queen cells with larvae or capped cells
- Bearding at the entrance (bees hanging out in clumps)
- Reduced foraging activity (bees know they're leaving)
- Colony feels "congested" with no empty cells
Swarm Prevention Strategies
You can't completely prevent swarmingâit's the colony's reproductive imperative. But you can manage the impulse:
Swarm Prevention Toolbox
1. Give them space (before they need it)
2. Reverse brood boxes
3. Checkerboarding
4. Make splits
5. Young queens
What NOT to do: Don't just destroy queen cells and hope for the best. If the swarm impulse is strong, they'll make new cells within days. Address the root cause (usually space or congestion).
Spring Feeding: When and How
When to feed:
- Light colonies (heft test reveals low weight)
- New packages or nucs that need to draw wax
- Before the nectar flow starts, to stimulate brood production
- During cold snaps that prevent foraging
What to feed:
- 1:1 sugar syrup (1 lb sugar : 1 lb water) â Mimics nectar, stimulates wax production
- Pollen patties â Protein for brood rearing, especially early spring before pollen is available
When to STOP feeding: Once the nectar flow starts (bees will ignore syrup anyway) or when you add honey supers. You don't want sugar syrup in your honey crop.
Your First Spring Inspection: Step by Step
Regional Adjustments
Spring timing varies dramatically by location:
| Region | First Inspection | Swarm Season | Main Flow |
|---|---|---|---|
| Southeast | Late Feb | MarâApr | MarâMay |
| Northeast/Midwest | Late MarâApr | MayâJune | MayâJuly |
| Pacific Northwest | MarâApr | AprâMay | June (blackberry) |
| Southwest/Desert | Feb | MarâApr | MarâMay (cactus) |