Glossary
Comprehensive management strategies for honey bee colonies during periods when little or no nectar is available from natural sources. Nectar dearths stress colonies through food scarcity, trigger defensive behavior and robbing, and require proactive beekeeper intervention to prevent starvation and colony decline.
Signs of nectar dearth include: bees hanging restlessly on the front of the hive (bearding without heat stress), increased defensive behavior, robbing attempts between colonies, cessation of new comb construction, weight loss when hefting hive boxes, and a relative absence of foragers departing and returning with full honey stomachs.
The timing of dearths varies by region. In Florida, the primary dearth typically occurs in late summer (July-September) after spring and early summer flows have ended and before fall flows begin. In the northern US, winter is the obvious dearth, but mid-summer gaps can also occur between spring and fall flows.
Feed supplementally if colony food stores drop below 2-3 frames of capped honey. Use 1:1 sugar syrup (water to sugar) for stimulating brood rearing or 2:1 for building food stores. Internal feeders prevent robbing; never use open feeders during dearth.
Reduce all entrances to help colonies defend against robbing. Combine weak colonies (a weak colony combined with another weak colony creates one strong colony, which is better than two dying ones). Avoid unnecessary hive inspections, which disrupt the colony and release alarm pheromone that signals vulnerability to robbers.
Dearth timing depends on your local flora. Your state beekeeping association and experienced local beekeepers are the best sources for understanding your specific regional nectar calendar. Generally, there is a gap between your last major spring/summer flow and your first fall flow.
Only harvest surplus honey, leaving the colony at least 40-60 pounds of stores for temperate climates (less for subtropical areas like Florida). Harvesting too aggressively before dearth sets up the colony for starvation and requires expensive syrup feeding to correct.
Yes. Planting summer-blooming bee forage (sunflowers, buckwheat, zinnias, cosmos, basil) can provide supplemental nectar during gap periods. However, a small garden cannot fully replace natural landscape-scale nectar flows. It is supplementary, not a complete solution.
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