Plant Diseases

Learn how to control the many plant diseases that can destroy your garden in a safe, organic way. We cover prevention and treatment!

A close-up shot of a composition of vibrant pink colored spiky flowers, showcasing powdery mildew bee balm

Plant Diseases

How to Prevent and Treat Powdery Mildew on Bee Balm

Bee balm is beautiful, but it’s also super susceptible to powdery mildew. Some varieties are more sensitive than others, and you’ll notice white, fuzzy growth all over their leaves. Join seasoned grower Jerad Bryant and learn how to prevent and treat powdery mildew on bee balm.

Close-up of broad, lobed green grape leaves with serrated edges, covered in scattered white, powdery mildew spots.

Plant Diseases

White Spots on Grape Leaves: How to Fix Powdery Mildew

As grapes turn purple, light green, and merlot in color, you may notice white spots growing on the vine’s foliage! The late summer garden is especially susceptible to powdery mildew. Prevention is the best solution, and these straightforward treatments address the issue before it spreads further.

A close-up shot of a small composition of damaged and diseased round fruits, showcasing late summer tomato diseases

Plant Diseases

How to Prevent Late Summer Tomato Diseases

After months in the ground, you may notice your tomato plants begin to become discolored, spotted, or weak from disease. Join farmer Briana Yablonski to learn symptoms of some common late summer tomato diseases and how to prevent them.

A close-up shot of a small composition of wilting stems and flowers showcasing a type of plant diseases

Plant Diseases

Don’t Ignore These 9 Plant Diseases in the Garden

While we can overlook plant diseases that cause only minor, if any, damage, some are lethal to our ornamentals and edibles and benefit from quick action. Prevention is the first step, but when they crop up, knowing what to do next helps limit the spread. Gardening expert Katherine Rowe explores garden diseases that are too risky to ignore for overall garden health.

Close up of a delphinium inflorescence wilting due to disease, with blue-purple wilting flowers against a background of rotting stems with dry foliage.

Plant Diseases

5 Delphinium Diseases: Prevention and Treatment

Healthy delphiniums bring floriferous spires of bell blooms that create a spectacle and beckon pollinators. The short-lived perennials are susceptible to common diseases that can counteract the blooms. Gardening expert Katheirne Rowe outlines what to look for, as well as how to prevent delphinium problems for an easier show of color.

Round and yellow fruits on a plant that appear infected with a type of lemon tree diseases

Plant Diseases

7 Lemon Tree Diseases: Causes and Cures

Lemon tree diseases such as citrus black spot and citrus canker can wipe out your favorite lemon tree in a season. But with a little preparation and insight, you’ll prevent these harmful diseases and save your fruit. In this article, horticulture expert Matt Dursum covers the causes and cures of common lemon tree diseases.