Feeding Bees

When to feed, what to feed, when to stop, and what recent syrup-ratio research does—and does not—prove.

When to feed

Feed when the colony does not have enough natural nectar or stored honey to do the job in front of it. Common cases:

New packages and nucs: feed until the colony has drawn enough comb and is storing nectar on its own.
Spring buildup: feed only if stores are light before reliable bloom. Syrup can stimulate brood rearing, but it cannot replace pollen.
Summer or fall dearth: feed if inspections show shrinking stores, light frames, or stalled brood rearing because forage has dried up.
Winter emergencies: use dry sugar, fondant, or sugar bricks. Do not pour liquid syrup into a freezing cluster.

Stop feeding when natural nectar is coming in, supers for human harvest are on, or the brood nest is getting crowded with syrup.

What to feed

White granulated sugar syrup is the default carbohydrate feed.
1:1 sugar:water is still the simple spring/package baseline for drawing comb and stimulation.
2:1 sugar:water is useful for fall storage because bees remove less water before capping it.
Fondant, candy boards, or sugar bricks are safer winter options than liquid feed.
Protein/pollen patties help only when the colony needs protein and natural pollen is short. Sugar syrup is carbohydrate, not a complete diet.

Avoid brown sugar, molasses, raw/unrefined sugars, salty liquids, fermented syrup, and experimental sweeteners. They can contain minerals or breakdown products that are hard on bees. Never feed honey from another apiary because it can spread disease.

What the sugar-syrup research adds

A 2016 M.S. thesis by Md. Anwar Morsed, Effect of Sugar Syrup on Bee Health, tested four sugar:water syrup ratios on 24 honey bee colonies at Sher-e-Bangla Agricultural University's research apiary in Dhaka, Bangladesh (August–October 2015). Colonies were fed in internal feeders at 7-day intervals.

The tested ratios were 1:1, 1:1.10, 1:1.20, and 1:1.30 sugar:water. In that local trial, the 1:1.30 sugar:water syrup performed best across most colony-development measures: eggs, larvae, pupae, pollen deposition, occupied frames, and lower reported mortality. The author still recommended more study before treating the result as universal.

Practical takeaway: do not assume thicker syrup is always better. For stimulation during a dearth or brood-building period, a slightly thinner syrup may be easier for bees to use. For fall winter stores, thicker syrup can still be appropriate because the goal is storage, not stimulation.

How to feed without causing problems

Inspect first. Confirm the colony actually needs feed. Look for light boxes, low nectar/honey arcs, reduced brood, and poor forage conditions.
Feed inside the hive when possible. Internal feeders reduce robbing pressure compared with open feeding.
Feed in manageable amounts. Too much syrup can crowd the brood nest — bees will backfill empty cells with syrup faster than the queen can lay in them. Spread feed across multiple smaller feedings rather than one large dump if you notice the brood nest tightening up.
Keep it clean. Mix with clean water, let hot syrup cool before placing it in the hive, and discard fermented syrup.
Watch the response weekly. Morsed's trial tracked brood, pollen area, occupied frames, and mortality every 7 days. Use that same idea: feed, then verify that brood and stores are improving.
Separate carbohydrate from protein needs. If brood rearing is limited by pollen, syrup alone will not solve it.
Remove or reduce feed when nectar starts coming in. Bees can backfill brood space with syrup, and syrup must not end up in honey supers intended for harvest.

Quick ratio guide

Situation	Feed	Notes
New package or nuc drawing comb	1:1 syrup	Continue until comb is drawn and nectar is steady.
Spring stimulation with light stores	1:1 syrup, or slightly thinner if using frequent small feedings	The Morsed thesis supports testing thinner syrup during dearth/stimulation periods, but do not overgeneralize one local trial.
Summer/fall dearth survival	1:1 or modestly thicker syrup	Feed based on inspections; avoid robbing.
Fall winter-storage push	2:1 syrup	Stop early enough for bees to process and cap stores.
Cold weather emergency	Fondant, sugar brick, candy board, or dry sugar	Avoid liquid syrup in freezing conditions.

References

Morsed, M. A. (2016). Effect of Sugar Syrup on Bee Health [M.S. thesis, Department of Entomology, Sher-e-Bangla Agricultural University]. Sher-e-Bangla Agricultural University Institutional Repository. https://archive.saulibrary.edu.bd/handle/123456789/1636
Standifer, L. N., Moeller, F. E., Kauffeld, N. M., Herbert, E. W., & Shimanuki, H. (1977). Supplemental Feeding of Honey Bee Colonies. USDA Agriculture Information Bulletin No. 413.
Goodwin, R. M. (1997). Feeding sugar syrup to honey bee colonies to improve pollination: a review. Bee World, 78(2), 56-62.
Pesante, D. G., Rinderer, T. E., Collins, A. M., Boykin, D. L., & Buco, S. M. (1992). Honey production in Venezuela: effects of feeding sugar syrup on colony weight gains by Africanized and European colonies. Apidologie, 23, 545-552.