The Key to Effective Bee Management: Understanding Nest Identification

Identifying Ground Bee and Digger Wasp Nests

Ground bees and digger wasps often signal their presence with small mounds of soil, each with an entrance hole, that appear in early spring. These bees fly low over the ground and return to their burrows, which can be spotted by observing their flight patterns.

Signs of Ground Bee Activity:

• Mounds of soil with larger openings than anthills
• Bees flying close to the ground
• Burrows in lawns and garden areas

Managing Ground Bees: A Non-Aggressive Approach

Ground bees, including the female of the species, are not typically aggressive and rarely sting. However, they will defend themselves if provoked. Male bees may seem aggressive near nesting sites, but they are harmless as they lack a stinger. Sweat bees, known for landing on humans to consume sweat, can sting if swatted aggressively.

Considerations Before Taking Action:

• Ground bees are important pollinators.
• They are not aggressive, allowing for normal outdoor activities.
• Nesting is seasonal, lasting only four to six weeks in spring.

Cultural Controls: The Preferred Method

To manage ground bees without harming them, cultural controls are recommended. These bees prefer dry soil, so watering the area can deter them. Ensuring healthy turf growth can also prevent nesting.

Steps to Discourage Ground Bee Nesting:

1. Water the soil as bees become active, applying half an inch twice a week in the absence of rain.
2. Address issues causing thin turf, which may include soil sampling, irrigation, or aeration.
3. Thicken the turf in affected areas by understanding and meeting its needs.
4. For areas unsuitable for grass, apply mulch to discourage nesting.

Alternative Control Methods

If ground bees choose a nesting site, simply watering the area with an inch of water per week can encourage them to relocate. A thick layer of mulch on bare garden beds is also an effective deterrent.

Pesticide Use: A Last Resort

Pesticides are generally not recommended for controlling ground bees due to their ecological benefits and low risk of stinging.

For more information on bee control and management, visit the Auckland Bee Control main page.

Interesting statistics and facts about bees and wasps that are often overlooked include their significant role in pollination and the ecosystem. According to the Food and Agriculture Organization of the United Nations, bees and other pollinators affect 35% of global agricultural land, supporting the production of 87 of the leading food crops worldwide. Moreover, the economic value of global crops directly affected by pollinators ranges from $235 billion to $577 billion annually. These figures underscore the importance of bees in our food system and the need for responsible management practices that protect these vital insects (FAO).