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GreenCure® fungicide is recommended for use on over 150 different flowers, trees, houseplants, fruits, vegetables, and turfs. Unlike other fungicides, GreenCure® is not a toxic chemical. Its active ingredient, potassium bicarbonate, is commonly used in food products, but in this patented formula it is a highly effective, more sensible fungicide. GreenCure can even be used for indoor growing.

Proven Effective

Developed by renowned plant pathologist, Dr. Ken Horst of Cornell University, GreenCure® the potassium bicarbonate-based fungicide is the safer alternative to harsh chemical fungicides.

In more than 200 university trials, GreenCure® has been proven to be comparable to or better than other fungicides.

GreenCure® has been proven effective against powdery mildew, rose black spot, anthracnose, downy mildew and many other plant diseases.

The GreenCure® formula has been successfully used for 15 years in large-scale organic agriculture and commercial growing applications.  It is used in some of the finest orchards, vineyards, and vegetable farms as well as public gardens and greenhouses.

GreenCure® is now available to home gardeners and small organic gardeners.

(Learn more about its effectiveness)

GreenCure® Knocks Out Powdery Mildew

Powdery mildew on pumpkin leaf, sprayed twice with GreenCure®.
One week between applications. Shows complete control of disease.

Advantages of GreenCure®

Kills powdery mildew and other diseases on contact and provides
up to 2 weeks of residual protection

  • Alternative to harsh chemicals
  • Proven effective in 200 university trials and 15 years in organic agriculture
  • Fully dissolves in water
  • Odorless - no foul smell
  • Sprays on evenly and sticks to
    plant surfaces
  • Fruit and vegetables can be harvested as soon as 1 hour after spraying
  • Does not restrict plant growth
  • Economical
  • Does not accumulate in soil
  • Compatible with many beneficial insects
  • For Organic Production
  • Use GreenCure with indoor and hydroponic gardening

Use GreenCure® for organic gardening. Fulfills USDA's National Organic Program (NOP) requirements.

GreenCure® is highly effective against powdery mildew on roses and other ornamentals. GreenCure can be used in the garden to prevent or cure powdery mildew on tomatoes, pumkins, cucumbers, grapes, apples, herbs and more.

(Learn why GreenCure® is better)

In The News

February, 2010: Now available, Dr. Ken Horst's new and updated Compendium of Rose Diseases and Pests book. This is the ultimate guide with detailed information about diseases of roses. Rose disease book plus gardening tools, garden shoes and other unique products available at: Garden Shoes Online.

Rose Garden Disease Book

GreenCure® Tested and Endorsed by the American Rose Society
During the summer of 2009, GreenCure was tested by ARS members throughout the country and has received the official "Tested and Endorsed" designation by the American Rose Society.


NHGC Seal of ApprovalApril, 2008: GreenCure® has received the “Member Tested – Seal of Approval” by the National Home Gardening Club. Over 350 members from across the country tested GreenCure and gave a 90% approval rating! Click here to see some of the National Home Gardening Club member comments about GreenCure®.
(read more)

BEST OF THE MUST-HAVES 2007February 3, 2007: GreenCure® has been named as one of THE BEST OF THE MUST-HAVES for 2007 by the joe gardener Company. Each year, The joe gardener Company spends countless hours scouring the country looking for ... (read more)

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