Growing raccoon populations across Kansas and the Great Plains are creating more challenges for home gardeners, particularly those raising sweet corn. As raccoon numbers have increased over the past 40 years, damage to gardens has become more common, with the animals often feeding on corn just before it is ready for harvest.
Kansas State University wildlife experts recommend fencing as one of the most effective ways to protect sweet corn from raccoon damage.
Electric fencing can provide reliable protection when installed correctly. A fence should use at least two wires, with the first positioned about 5 inches above the ground and the second about 4 inches higher. The spacing should prevent raccoons from crawling under, squeezing between or climbing over the wires without receiving a shock.
Proper installation also requires fence posts and insulators designed for electric fencing. Electrified net fencing, including poultry netting sold in ready-to-use kits with posts attached, can simplify installation while also helping keep smaller garden pests such as rabbits out of vegetable plots.
Timing is also important. Gardeners should install fencing before sweet corn approaches maturity. Once raccoons begin feeding on the crop, they are more difficult to deter. Keeping weeds trimmed around the fence also helps maintain effectiveness by preventing vegetation from grounding the wires.
Kennel fencing is another option for excluding raccoons. Panels should be secured tightly to eliminate gaps at the corners where animals could squeeze through. If raccoons begin climbing the panels, adding a cover over the top can improve protection. Welded garden fencing can serve as an effective material for creating that overhead barrier.
Source: Kansas State University, "K-State wildlife expert shares tips for raccoon control"