Should A Queen Excluder Be Used In A Flow Hive? Ensure Clean Honey Harvests & Protect Your Mechanism

Yes, utilizing a queen excluder is considered best practice when managing a Flow hive. While operation without one is technically possible, using an excluder significantly reduces the risk of the queen ascending to the honey supers and laying eggs inside the mechanism of the Flow frames.

Core Takeaway The deep cell structure of Flow frames can inadvertently encourage the queen to lay drone brood within the honey super. Installing a queen excluder is the most reliable way to confine the queen to the brood box, ensuring your harvest remains pure honey and preventing the complication of brood developing inside the harvesting mechanism.

The Purpose of the Excluder in Flow Hives

Preventing Brood in the Harvesting Mechanism

The primary reason to use an excluder is the specific design of the Flow frames. The cells in these frames are deep, which the queen may interpret as ideal for laying drone brood.

If the queen accesses the Flow super, she may lay eggs in these cells. This complicates harvesting, as the mechanism is designed to split cells and drain honey, not to handle developing larvae or cocoons.

Keeping the Hive Organized

Using an excluder acts as a definitive management tool. It strictly confines the queen to the lower brood boxes.

This separation ensures that the upper boxes (supers) remain dedicated solely to honey storage. It also saves time during inspections, as you do not need to hunt through the honey supers to locate the queen.

Management Strategies Without an Excluder

The Natural Approach Risks

Some beekeepers prefer not to use excluders, viewing them as unnatural barriers. However, in a Flow hive, this introduces the specific risk of the queen migrating upward to lay drones.

If you choose to operate without an excluder, you must actively manage the colony's instinct to produce drones elsewhere to keep the queen satisfied in the lower boxes.

The Foundationless Frame Method

To minimize the likelihood of the queen moving up without an excluder, you should place an empty, foundationless frame within the brood chamber.

Bees naturally desire to build drone comb, which typically comprises about 20% of their total comb. By providing a dedicated space in the brood box for this natural construction, you reduce the queen's incentive to seek out the deep cells of the Flow frames for drone laying.

Understanding the Trade-offs

Installation Timing is Critical

You cannot simply leave an excluder on year-round or install it too early. It should only be added during a nectar flow when the hive is strong and populous.

If added to a weak hive, the bees may hesitate to cross the excluder to work in the supers. The brood box must be full of bees and brood before the excluder and Flow super are added.

Maintenance and Removal

While the excluder simplifies summer management, it must be removed at the end of the season.

Typically, this occurs between late July and mid-August after the honey harvest. Removing it allows the colony to cluster properly for winter and ensures the queen is not isolated from the warmth of the colony as temperatures drop.

Making the Right Choice for Your Goal

The decision ultimately depends on your management philosophy and your tolerance for risk regarding the Flow mechanism.

If your primary focus is Ease of Harvest: Use a queen excluder to guarantee the Flow frames contain only honey and no brood.
If your primary focus is Natural Beekeeping: You may skip the excluder, but you must provide a foundationless frame in the brood box to satisfy the queen's urge to lay drone brood.

Ultimately, using an excluder is the safest route to ensure the Flow hive functions exactly as intended.

Summary Table:

Management Aspect	With Queen Excluder	Without Queen Excluder
Honey Purity	High - Guaranteed no larvae in frames	Risk of drone brood in honey cells
Harvesting Ease	Optimal - Mechanism stays clean	Difficult - Cocoons can jam mechanism
Management	Simple - Queen location is restricted	Intensive - Requires foundationless frames
Winter Prep	Must be removed for cluster movement	No removal needed
Bee Traffic	Slight barrier; requires strong flow	Natural movement throughout hive

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