Raised beds keep a lot of garden problems away, but voles can still get in from below. In Star, gardeners often find carrots, beets and potatoes hollowed out from underneath, bulbs that never come up or seedlings that wilt overnight because their roots were eaten. Voles tunnel in under the frame, feed in the loose, rich soil and move on to the next bed.
Here’s how to confirm voles are the problem and how to build and maintain raised beds they can’t get into.
What Are Voles?
Voles are small rodents with stocky bodies, short tails and small ears. They’re sometimes mistaken for mice, but they rarely come indoors and they feed almost entirely on plants: roots, bulbs, tubers, stems and seedlings. Montane and meadow voles are the most common in the Treasure Valley. They breed quickly, so damage can grow fast over a single season.
Our rodent identification guide shows how voles compare with house mice and other rodents.
Why Voles Go for Raised Beds
- Loose soil. Amended garden soil is easy to tunnel through.
- Food all season. Root crops, bulbs and tender greens are exactly what voles eat.
- Cover. Mulch, straw, overgrown paths and tall grass around the beds hide their movement.
- Moisture. Irrigated beds stay soft and green through Star’s dry summers.
Signs of Vole Damage
- Root vegetables chewed from below, sometimes with only the tops left
- Plants that wilt suddenly or can be pulled up easily because the roots are gone
- Small, round holes in the bed or along the frame, with no dirt mound
- Narrow runways through grass between beds, especially visible after snowmelt
- Small, rice-shaped droppings and clipped plant pieces along runways
Raised ridges and volcano-shaped mounds point to moles, and fan-shaped mounds point to pocket gophers. Each needs a different approach.
Build a Vole-Proof Bed
Line the bottom
The most reliable fix is a floor of quarter-inch or half-inch galvanized hardware cloth under the soil. Lay it across the full bottom of the bed and bring it several inches up the inside walls, then staple it to the frame. For existing beds, this usually means emptying the bed, but it’s worth doing once for a permanent result.
Add an apron or skirt
For beds without a mesh floor, bury hardware cloth six to ten inches deep around the outside of the frame and bend the bottom outward a few inches in an L shape. Voles digging down along the frame hit the mesh and turn away.
Protect the top
Voles can climb into low beds. A frame at least a foot tall, or a low mesh fence around the top edge, helps.
Change the Habitat Around the Beds
- Keep grass mowed short between and around beds.
- Use gravel or bare paths instead of thick straw or wood chips.
- Keep mulch inside beds thin, and pull it back from plant stems in fall.
- Clear garden debris, boards and weeds after harvest, so voles have less cover over winter.
- Store bulbs and harvested root crops where voles can’t reach them.
Trapping
Snap traps set in runways or next to burrow openings near the beds can reduce a small population. Bait with a little peanut butter or apple, cover each trap with a box or bucket so other animals can’t reach it and check traps daily. Trapping works best in fall and early spring.
Oregon State University Extension’s guide to managing meadow voles and pocket gophers and UC IPM’s vole pest notes have more detail on barriers and trapping.
When to Call for Help
If damage keeps spreading after you’ve added barriers, or voles are also damaging trees, shrubs and lawn, professional vole control can help. Our posts on preventing voles in landscaping, vole damage in Eagle yards and vole control for orchards cover the rest of the yard.
Vole control is a separate service from our regular residential pest control, which covers spiders, ants, wasps and hornets, mice, rats and fall invaders. We offer quarterly, bi-annual and one-time service. Quarterly service plan customers get free return visits. No contracts; cancel with 30 days’ notice. Rodent service is included at no extra cost with quarterly service plans; traps and materials are billed separately. We also serve commercial properties.
Raised Bed Vole FAQs
Are voles the same as moles or gophers?
No. Voles are small rodents that tunnel through surface runways and eat roots, bulbs and stems. Moles are insect-eaters that leave raised ridges, and pocket gophers push up crescent-shaped dirt mounds and are a separate service. Knowing which one you have changes the approach.
When are voles most active in gardens?
They’re active year-round. Damage often shows up in late winter and early spring, when snow melts and reveals runways, and again in fall as they feed heavily before winter.
Will hardware cloth hurt my plants?
No. Roots grow through the mesh openings while voles are kept out.
Vole Help in Star
ProGuard is based in Eagle and serves homes and businesses in Star, Boise, Meridian, Nampa, Caldwell, Middleton, Emmett and Garden City. Call (208) 352-2062 or contact us to schedule a site assessment and talk through vole control for your garden.