Ortho Rose & Flower Disease Control Concentrate, 16 oz – Systemic Fungicide for Roses & Flowers (Up to 4 Weeks)

Systemic protection for roses and flowering plants

Ortho Rose & Flower Disease Control Concentrate is a systemic fungicide designed to shield roses and flowering plants from common diseases. Packaged in a 16 oz bottle, the formula moves through leaves and stems, delivering protection from the inside out and supporting healthy, persistent blooms. This product works with the plant’s natural processes to help maintain vibrant foliage and flowers throughout the season.

Because the product travels within the plant, the treatment remains active after drying, providing rain resistance so you can rely on coverage even after wet weather. The protection duration can extend up to four weeks, depending on growing conditions and plant activity, making it a flexible option for garden enthusiasts managing frequent rainfall or heavy dew.

What this product covers

The concentrate is designed to target several widespread diseases that affect roses and other flowering plants, helping to keep foliage healthier and appearances more vibrant during the growing season.

• Controls and helps prevent black spot, rust, powdery mildew, and other listed diseases
• Systemic action travels through leaves and stems for comprehensive coverage
• Protection lasts up to 4 weeks after it dries
• Starts working within 24 hours of application
• Designed for outdoor plants to defend against listed diseases

Why gardeners choose this approach

To support a thriving outdoor display, this product offers several practical benefits. You can treat established plants and new growth alike, helping to reduce common disease pressure across your rose beds or flowering borders. By acting from within the plant, it aims to shield both existing foliage and future growth as it emerges.

• Longer protection window helps reduce the need for frequent reapplications
• Leaves and stems absorb the active ingredient for systemic coverage

Tips for best results

Apply as directed for best results and ensure outdoor plants receive adequate sunlight and airflow. Because the product dries and becomes rain resistant, it stays in place through light rain. Keep in mind this product is not for sale in NY.