Bee Colony Feeding & Syrup, Sugar & Water

In a dearth — when little nectar is coming in — colonies can run low on stores and stop rearing brood or even starve. Beekeepers feed sugar syrup to bridge the gap: a thin syrup stimulates the queen to lay and the colony to build up, while a thick syrup lets bees pack away stores for winter. This calculator gives the total syrup, sugar and water for your colonies and chosen strength.

The ratio is sugar to water by weight. A 1:1 syrup (equal sugar and water) is thin, mimics a nectar flow and is used in spring or a dearth to stimulate brood rearing and colony build-up. A 2:1 syrup (twice as much sugar as water) is thick, closer to ripe honey, and is fed in autumn so bees can quickly dehydrate and store it as winter stores.

From the feed you want per hive and the number of colonies, the tool finds the total syrup volume, then splits it into sugar and water by the chosen ratio. For 1:1 the syrup is roughly half sugar and half water; for 2:1 it is about two-thirds sugar. So feeding 10 hives 2 L of 2:1 each needs around 20 L of syrup made from a large share of sugar — the figures here size your sugar order.

Feed 1:1 in early spring and during summer dearths to stimulate brood and build colony strength, and to draw out new comb. Switch to 2:1 in late summer and autumn so the colony stores dense feed for winter without having to evaporate much water. Stop heavy feeding once brood rearing winds down and the cluster has enough stores.

It varies with climate and colony size, but a typical colony needs a substantial reserve to survive winter — often 15–25 kg of stores in cold regions, less in mild ones. Use the per-hive feed amount to top up what the bees already have in the comb, weighing or hefting hives to judge how much more 2:1 syrup to give.

Avoid heavy feeding during a honey flow you intend to harvest — fed sugar can end up in the supers and adulterate the honey. Stimulative 1:1 feeding is mainly for build-up before a flow or during a dearth, and storage feeding is done after the harvest supers are removed. Always feed inside the hive to prevent robbing.

Yes — a thick 2:1 syrup contains far more sugar per litre than a thin 1:1 syrup, so the same volume of feed needs much more sugar at 2:1. That is exactly why the calculator splits each batch into sugar and water for your chosen ratio: it tells you the sugar to buy and the water to add for the total feed across all your colonies.

Dissolve plain white granulated sugar in warm (not boiling) water — overheating can caramelise the sugar and harm bees. Stir until clear, let it cool, and feed using a frame, top or entrance feeder. Avoid brown sugar, molasses or substitutes high in solids, which can cause dysentery in the cluster.

Yes — enter the number of colonies in your apiary and the feed per hive, and the tool scales the total syrup, sugar and water to the whole yard. It works the same for a single backyard hive or a commercial bee operation, so you can plan a feeding round and size your sugar purchase in one go.