Free Shipping on $75+ Orders (excludes overweight shipping). Activate savings
Close Pop Up

Shopping Cart

0 items in cart
COVID-19 Status: Currently not experiencing delays. Fall items will arrive at the proper planting time for your area.
  • MENU
  • SEARCH
  • HELP
Free Shipping
on Orders of $75 or more (excludes overweight shipping).
Activate savings
COVID-19 Status: Currently not experiencing delays. Fall items will arrive at the proper planting time for your area.

Downy Mildew


Downy Mildew

Description:

Downy mildew affects roses throughout the U.S.

Symptoms:

Infection begins on young plant growth. Leaves develop dark purplish to dark brown spots. Symptoms may resemble burns caused by pesticide toxicity. Humid, cool conditions favor downy mildew infection.

Solutions:

If downy mildew has been a problem in the past, begin spraying with a copper soap when new spring growth emerges. Repeat every 7-10 days for as long as needed to control disease. Fixed copper is one of the oldest fungicides and bactericides used to control a wide range of plant diseases. We recommend Soap-Shield® Flowable Liquid Copper Fungicide.*

*NOTE:

Soap-Shield may cause copper toxicity on some rose varieties. Copper toxicity appears as purple spots and is more likely to occur outdoors than in greenhouses.


« Back to Garden Diseases

Related products

  • Soap-Shield<sup><font size=3>®</font></sup> Flowable Liquid Copper Fungicide
    Soap-Shield® Flowable Liquid Copper Fungicide

    Our Soap-Shield ® Liquid Copper Fungicide uses fixed copper, one of the oldest fungicides and bactericides around that's safe for controlling broad-spectrum plant disease. By mixing a soluble copper fertilizer with a naturally...

    Read More

Stay in touch for specials and savings!

When you become a Gardens Alive!® email subscriber, we'll send you up-to-the minute updates and deals that will help you save! Privacy Policy

Sign-Up and Save

You'll enjoy...

  • • Exclusive offers and specials
  • • First access to new products
  • • Free Shipping on $75+ order

Gardens Alive!® respects your privacy. Unsubscribe anytime.

Close Popup
Close