When and What to Feed Your Bees

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title: "When and What to Feed Your Bees" category: "Feeding & Nutrition" summary: "Feeding bees incorrectly can cause as many problems as not feeding at all. Here's when supplemental feeding actually helps, what to use, and when to stop." readTime: 6 difficulty: "beginner" season: "year-round" slug: "when-and-what-to-feed" publishedAt: "2026-03-02" course: "beginner" module: "Feeding & Nutrition" lessonOrder: 12

Feeding bees sounds simple. In practice, it's one of the most misapplied tools in beekeeping — done at the wrong time, in the wrong concentration, or in quantities that trigger robbing and other problems. This article covers when supplemental feeding genuinely helps, what to use in each situation, and when to put the feeder away.

When to Feed — and When Not To

Feed when:

• A new package or nucleus colony is being established and lacks stored food
• Your colony's honey stores are running low going into fall or winter
• Spring buildup is slow and the colony needs a stimulus to start brood rearing
• A late-summer dearth is leaving the colony short of stores for winter prep
• You've completed a late-season treatment and need to help the colony recover

Don't feed when:

• Your colony has adequate stores and foraging is active — unnecessary feeding disrupts natural foraging behavior and can trigger robbing
• You're trying to get bees to store it as "honey" — sugar syrup stored in honey frames contaminates your harvest and in some jurisdictions violates labeling laws
• Temperatures are consistently below 50°F (10°C) — bees cannot properly process cold syrup, and uncapped liquid can ferment in the hive

Sugar Syrup: Concentration Matters

1:1 syrup (1 part sugar to 1 part water by weight) mimics thin nectar. Bees process it readily and it stimulates brood rearing. Use in spring to encourage buildup, or when installing new packages. This is the right concentration for stimulative feeding.

2:1 syrup (2 parts sugar to 1 part water by weight) is thicker and closer to capped honey in sugar content. Bees store it with less processing and cap it faster. Use in fall when you need to build up winter stores quickly. Using 1:1 in fall forces bees to do more processing work and increases moisture in the hive at exactly the wrong time.

Preparation: Use plain white granulated cane or beet sugar. Do not use brown sugar, powdered sugar with cornstarch, honey (risk of disease transmission), or artificial sweeteners. Dissolve sugar in warm (not boiling) water. Cool before feeding. Do not add essential oils, apple cider vinegar, or other additives — the evidence for their benefit is negligible, and some can deter feeding.

Feeder Types

Division board feeders (frame feeders): Sit inside the hive in place of a frame. Hold 1–2 gallons. Bees access syrup from the inside without exposure at the entrance — good for preventing robbing. Cleaning can be difficult; check that drowning is prevented with a float or mesh.

Top feeders (hive-top feeders): Sit above the top brood box under the outer cover. Hold several gallons. Easy to refill without disturbing the colony. Bees access from below via a screened channel. A good choice for fall feeding when you want to add large volumes quickly.

Entrance feeders (Boardman feeders): A jar inverted over an entrance insert. Convenient but problematic — they expose syrup at the entrance, stimulating robbing from neighboring colonies. Avoid during nectar dearths. Acceptable only when nectar flow is strong (which is also when you shouldn't need to feed).

Open feeding (bucket or trough outside the hive): Never a good practice for colony-specific feeding. Attracts bees from all nearby colonies and triggers robbing fights.

Pollen and Protein Supplementation

Bees need pollen (protein) as much as they need nectar (carbohydrates). Brood rearing, fat body development, and winter bee longevity all depend on adequate protein intake.

When natural pollen is scarce — typically late summer in areas with a summer dearth, and early spring before natural pollen is available — a protein supplement can support brood rearing and fat body development.

Pollen substitute patties are compressed cakes containing brewers' yeast, soy flour, or other protein sources formulated to approximate pollen's amino acid profile. Place directly on the top bars above the cluster. Remove and replace when the patty is consumed or becomes hard and unpalatable.

Commercial products: MegaBee, Global Patties, and AP23 are commonly available and have been tested for palatability and nutritional value. Avoid making homemade substitutes from untested ingredients — poor amino acid profiles can impair brood development.

Do not confuse pollen substitute with pollen supplement. A supplement contains actual pollen; a substitute is entirely artificial. Both are marketed for similar use cases.

Timing: Early spring pollen supplement (before natural pollen is available) stimulates early brood rearing, which can improve spring buildup — but may also stimulate growth faster than natural foraging can support. In regions with unreliable early springs, monitor stores carefully if feeding protein early.

Robbing Prevention

Any feeding that introduces the smell of sugar syrup at the hive entrance can trigger robbing — where bees from stronger colonies attack weaker ones to steal their stores. Robbing can escalate rapidly and is stressful for the colony.

To minimize robbing risk:

• Use internal feeders (division board or top feeders), not entrance feeders
• Feed in the evening, when foraging has slowed
• Reduce the entrance to its smallest opening during feeding
• Don't spill syrup on or near the hive
• If robbing starts (frenetic, chaotic activity at the entrance, bees fighting), reduce the entrance further, cover the hive with a wet sheet temporarily, and reassess your feeding approach

Key Takeaways

• Use 1:1 syrup in spring for stimulative feeding; 2:1 syrup in fall for store-building.
• Plain white granulated sugar only — no honey, brown sugar, or additives.
• Use internal feeders (top or division board) to avoid triggering robbing.
• Stop feeding when the colony has adequate stores, when foraging is active, or when temperatures drop below 50°F consistently.
• Add protein supplement in early spring before natural pollen is available, and in late summer during a dearth — especially when your colony is raising its winter bees.