Harvestmen
categories: Natural Enemies Other Natural Enemies
last review date: 2026-05-15 11:20
Photo by: D.G. James
Biology
Closely related to spiders, harvestmen are well known as daddy-long-legs and are common in gardens. The body of daddy-long-legs may only measure 1/4 inch, but the legs may stretch for 1 to 1.5 inches!
Most species are omnivores feeding on small insects and mites as well as plants, fungi and dead organisms. So, although not as useful as spiders and mites, they do play a small pest control role in gardens.
The story that harvestmen are the most venomous animals in the world is assuredly a myth! They do not contain venom, nor can they puncture the human skin.
Prey or Pest Targeted
Small larvae, beetles, mites, aphids, earthworms, slugs, spiders
Attracting and Keeping Natural Enemies
and Pollinators in Your Yard and Garden
- Native plants provide essential resources.
- Native flora also provides natural overwintering sites.
- Natural dispersion from nearby habitats ensures visitation.
- Some kinds of beneficial insects predatory mites are commercially available.
- Avoid regular use of synthetic, broad-spectrum pesticides.
- Infrequent use of certain narrow-spectrum pesticides is more compatible with some beneficials.
- Extensive lawns are also not conducive to attracting beneficial insects.
Management Options
See "Using Integrated Pest Management (IPM) in the Landscape" for successful problem management techniques.
Chemical Management
IMPORTANT: For more information on using pesticides, visit Home and Garden Fact Sheets | Pesticide Resources and Education Program | Washington State University.
- None recommended
WSU Extension programs and employment are available to all without discrimination.
Evidence of noncompliance may be reported through your local Extension office.