Pests and Diseases

  • Mexican Bean Beetle
    Unlike most of the Coccinellidae which are carnivorous and feed upon aphids, scales and other small insects, this species attacks plants.
  • Keeping Wildlife out of the Garden
    In this video, our friend and gardening expert Charlie Nardozzi talks about how to keep wildlife out of your garden.
  • Controlling Insect Pests in the Garden
    In this video, our friend and gardening expert Charlie Nardozzi talks about minimizing insect pests in your garden.
  • Preventing and Mitigating Garden Diseases
    In this video, our friend and gardening expert Charlie Nardozzi talks about effective, natural disease controls.
  • Common Flower Diseases
    Mid- to late summer is the time plant diseases become noticeable in gardens and landscapes. Some of the most common diseases found on flowers the home garden include powdery mildew, gray mold (Botrytis), and black spot.
  • Mouse-Proofing
    Autumn temperatures send mice scurrying to warmer places, such as homes. The key to keeping them out?
  • Most Bugs are Good Bugs
    Most garden visitors -- more than 95 percent -- are either beneficial or benign.
  • Onion Neck Rot
    Techniques for prevention and control.
  • Plant Diseases 101
    What to do when your plant looks sick.
  • All About Yellow Jackets, Bees and Their Kin
    How to identify yellow jackets, honeybees, bumblebees and other stinging insects. Techniques for preventing problems.
  • Controlling Bedbugs
    Bedbugs are back. The good news is that organic sprays containing clove, peppermint and orange oils are effective on contact, and it appears that the insects don't develop resistance to them.
  • How to Control Blossom-End Rot on Tomatoes
    A water-soaked spot at the blossom end of tomato fruits is the classic symptom of blossom-end rot. This relatively common problem is caused by a calcium imbalance.
  • Controlling Animal Pests
    How to control troublesome animal pests.
  • Potato Scab
    Techniques for prevention and control.
  • Bacterial Soft Rot
    Techniques for prevention and control.
  • Phomopsis Blight
    Techniques for prevention and control.
  • Gopher
    Gophers feed on above- and below-ground portions of many plants. Roots crops, such as potatoes and carrots, and bulbs, such as tulips, are favorite targets.
  • Deer
    Techniques for keeping deer out of your garden.
  • Slug-Resistant Plants
    A list of flowering plants that slugs don't like.
  • Plant Pest Photo Gallery
    Photos of common insects and information about how to identify and control damage.
  • Colorado Potato Beetle
    Techiques for prevention and control of Colorado potato beetles in your garden.
  • Squash Bug
    Techniques for prevention and control.
  • Asparagus Beetle
    These quarter-inch beetles and their larvae feed on young asparagus spears; damaged spears often develop blemishes and a shepherd's crook appearance.
  • Bacterial Spot
    Techniques for prevention and control.
  • Scale
    Techniques for control of scale insects.
  • Using Garden Fabric (Row Covers)
    Guide for using fabric row covers to protect your plants from cold, sun or pests.
  • Codling Moth
    Techniques for controlling codling moths.
  • Tomato Hornworm
    Techniques for prevention and control.
  • Cutworm
    Techniques for prevention and control of cutworms.
  • Earwig
    Techniques for prevention and control.
  • Corn Rootworm
    Techniques for prevention and control.
  • Cabbageworm
    Techniques for prevention and control.
  • Club Root
    Techniques for prevention and control.
  • Black Rot
    This bacterial disease is affects all cabbage family crops.
  • All About Bats
    Learn how -- and why -- you should make a home for bats in your backyard.
  • How to Prevent Late Blight on Tomatoes
    How can you prevent late blight on tomatoes? Unfortunately, there's no silver bullet for late blight.
  • Are You Ready for Roses?
    To help ensure your success with roses, we've gathered some rose care products to help you get the most from your roses.
  • Keeping Animal Pests Out of Your Garden
    What is a nature-loving, generally peaceful soul to do when voles, woodchucks, squirrels, gophers, rabbits, moles, and other furry little mammals wreak havoc on our gardens?
  • Late Blight
    This fungus disease attacks tomatoes and potatoes at any stage of growth. Irregular gray spots form on leaves.
  • Viruses in the Garden
    There are many kinds of viruses that can infect a wide variety of plants all over North America, including beans, celery, corn, cucurbits, peas, peppers, spinach, and tomatoes.
  • Powdery Mildew
    Techniques for prevention and control.
  • Animal Fencing Techniques
    Fencing is the only sure-fire way to keep wild and domestic animals out of a prized garden.
  • Lacewing
    Learn how to attract the lacewing, a beneficial insect.
  • Celery Leaftier
    Techniques for prevention and control of this caterpillar that chews on leaves of celery, beets, and other crops.
  • Skunk
    Techniques for prevention and control of skunks in the garden.
  • Coyote
    Techniques for keeping coyotes out of your garden.
  • Cucumber Scab
    Techniques for prevention and control.
  • Yellow Jacket FAQs
    Often confused with bees, yellow jackets are much more aggressive, and most reported "bee stings" may in fact be yellow jacket stings. Here are some of the most commonly asked questions.
  • How to Control Slugs
    Techniques for prevention and control of slugs.
  • Nematode
    Beneficial nematodes are microscopic predators that destroy the larvae of many common garden pests. But there are also nematode species that feed on the roots of plants and foliage.
  • Fruit Fly
    Techniques for prevention and control.
  • Leafhopper
    Techniques for prevention and control of leafhoppers.
  • Alternaria Leaf Spot
    Techniques for prevention and control.
  • Aster Yellows
    Techniques for prevention and control.
  • 7 Steps to Diagnosing Plant Problems
    If you want to avoid using broad-spectrum poisons in your garden, the key to success is taking time to observe and try to understand what's really going on. It's the single most important action you can take.
  • Carrot Rust Fly
    Techniques for prevention and control.
  • Controlling Lily Leaf Beetles
    How to keep lily leaf beetles from destroying your lilies.
  • Controlling mosquitoes
    This guide will help you enjoy being outdoors, even during mosquito season.
  • Early Blight
    Techniques for prevention and control.
  • Septoria Leaf Spot
    Techniques for prevention and control of septoria leaf spot, a fungal disease that can affect a wide variety of plants.
  • Bacterial Blight
    Techniques for prevention and control.
  • Flea Beetle
    Techniques for prevention and control.
  • Leafminer
    Techniques for prevention and control of leafminer larvae which can hurt leafy crops like spinach and lettuce.
  • Grasshopper
    Techniques for managing grasshopper populations in the garden.
  • European Corn Borer
    Techniques for prevention and control.
  • Wireworm
    Techniques for prevention and control.
  • Asian Lady Beetles — More Than a Nuisance
    Both Asian lady beetles and native species hunt garden pests. However, Asian lady beetles have become a troublesome pest in many parts of the country.
  • Seven Habits that Work with Nature to Minimize Pest and Disease Problems
    Seven habits that work with nature to control pests and diseases so you can enjoy a healthier garden and harvest.
  • Troubleshooting Tomato Problems
    What's wrong with my tomatoes? Learn how to diagnose and treat tomato problems.
  • Protect Your Garden From Deer
    Techniques for repelling deer.
  • How to Control Japanese Beetles
    How do you control Japanese beetles in the garden? This guide will help.
  • Wash Your Houseplants to Prevent Pest Problems
    Inspect houseplants thoroughly before moving them indoors for the winter. Here's how to wash them when you do.
  • Curculio
    Often called plum curculio, this beetle with the long, curved snout is a common pest of apples, peaches, cherries, apricots, pears, and plums, but only east of the Rocky Mountains and primarily in the north.
  • Aphid
    These small, soft-bodied, pear-shaped insects cluster densely on tender new growth and the undersides of leaves to suck plant juices.
  • Spider Mite
    Techniques for prevention and control.
  • Mealybug
    Mealybugs suck plant juices from fruit crops, potatoes, and many kinds of houseplants.
  • Bacterial Wilt
    Techniques for prevention and control.
  • Rabbit Controls
    Controlling bunnies with fences, repellents and other techniques
  • Fusarium Wilt
    Techniques for prevention and control.
  • How to Control Snails
    Techniques for prevention and control.
  • Four-Lined Plant Bug
    Techniques for prevention and control.
  • Blister Beetle
    Techniques for prevention and control.
  • Parsnip Canker
    Techniques for prevention and control.
  • How to Recognize Plant Stress
    Sometimes when plants look sick or appear to be under attack by insects, the symptoms are actually a sign that the plant is being stressed by environmental factors. Here are some common symptoms of stress and the conditions that cause them.
  • Protecting Berries from Birds
    If you're trying to keep birds from your crops, any scare device will work for a few days. But the most effective technique is exclusion.
  • A Savvy Gardener Gives Deer Their Own Clover Meadow
    Smart gardener gives deer their own clover meadow.
  • How to Keep Dogs and Cats Out of the Garden
    The best control is to give pets their own yard or train them well. Other options include fences, barriers and repellents.
  • Corn Leaf Blight
    Techniques for prevention and control.