Nectar Dearth

When the Flowers Stop

Nectar flows are seasonal. Between flows, there are periods, sometimes days, sometimes weeks, when the landscape produces very little nectar. During a dearth, forager bees return to the hive empty. The colony shifts from production mode to conservation mode, consuming stored honey to survive rather than adding to it.

Bee behavior changes noticeably during a dearth. Colonies become more defensive because guard bees are on higher alert against robbers. Foragers search more aggressively for any sugar source, which is why bees suddenly appear at picnics, soda cans, and hummingbird feeders during dearths. They are not being aggressive; they are desperate.

Regional Timing

In Florida, the most common nectar dearth occurs in late summer (August-September), between the end of the saw palmetto bloom and the beginning of the Brazilian pepper bloom. The heat is intense, rainfall is unpredictable, and few nectar-producing plants are active. Northern beekeepers often face a late-fall dearth before winter, when the last flowers fade and colonies must rely entirely on stored reserves until spring.

Management Strategies

During a dearth, beekeepers reduce hive entrances (less space for guards to defend), avoid opening hives unnecessarily (exposed honey can trigger robbing frenzies), and consider supplemental feeding with sugar syrup if stores are low. We also avoid harvesting honey too aggressively before a known dearth period: the bees' winter survival depends on having enough reserves to get through the lean months.