6 Common Rose Problems and How to Fix Them

Keep Your Roses Healthy and Blooming

Roses have a reputation for being fussy, but most issues are manageable with early identification and prompt action. Here are the six most frequent troubles and their remedies.

1. Black Spot

Symptoms: Circular black spots with fringed edges on leaves, leading to yellowing and drop.
Fix: Remove and destroy infected leaves and fallen debris. Apply a labeled fungicide if needed.

2. Powdery Mildew

Symptoms: White, powdery coating on leaves, stems, and buds; leaves curl and turn purple.
Fix: Improve air circulation. Spray with an organic antifungal (e.g., potassium bicarbonate or neem oil).

3. Rust

Symptoms: Orange-red blisters on leaf undersides, turning black in fall; can overwinter.
Fix: Collect and destroy infected leaves in autumn. Spray organic fungicide every 5–7 days during active growth.

4. Spider Mites

Symptoms: Stippled, distorted leaves; fine webbing; tiny yellow, red, or green mites on undersides.
Fix: Blast plants with a strong jet of water to dislodge mites. Repeat weekly. Insecticidal soap or horticultural oil works for heavy infestations.

5. Aphids

Symptoms: Clusters of small, soft-bodied insects (green, brown, red) on buds and leaf undersides; sticky honeydew.
Fix: Spray off with water. Encourage lady beetles and lacewings. Neem oil or insecticidal soap as backup.

6. Thrips

Symptoms: Flowers fail to open or are deformed; slender brown-yellow insects with fringed wings in buds.
Fix: Remove and destroy infested blooms. Spray neem oil or spinosad early in the season.

Regular monitoring, good sanitation, and choosing disease-resistant varieties go a long way toward a carefree rose garden.