Fungicides
20 Products! Please scroll down for more products

Compass Please note: Compass is no longer available in the 8-oz. size. If you don't want to buy the 1-lb. size listed here, check out the very similar and exceptionally effective Heritage, listed below. Strobilurin chemistry makes Compass a very effective and safe fungicide for preventing all of the usual rose diseases. It's also an eradicant when used at a higher dose. With all the benefits of a contact and a systemic fungicide, Compass penetrates leaf tissue, is reactivated in rain and fog, and even provides protection to nearby plants. Should be alternated with Honor Guard or other non-strobilurin fungicide to prevent resistant strains. Alternate Compass and Honor Guard every 14 to 21 days. Rate: 1/2 teaspoon per 8 gallons to prevent, 1 teaspoon per 8 gallons to eradicate. N097 Compass, 1 lb., $459.95 P&H $6.25 Quantity to order:

Heritage NEW Lower Price! A potent inhibitor of spore germination and mycelial growth, Heritage is a long-lasting broad-spectrum preventive fungicide that blocks spore production, germination, and infection for up to 21 days. It is a low-risk strobilurin that is absorbed by the leaves and stems and translocates throughout the plant. It provides excellent control of rust, anthracnose, botrytis blight, and downy mildew as well as blackspot and powdery mildew. It is best when alternated with another fungicide with a different mode of action, such as Honor Guard, so alternate Heritage and Honor Guard sprays every 14 to 21 days. Rate: 1/4 tsp. to 1 tsp. per 4 gallons, depending on infection pressure (disease weather.) H699 Heritage, 4 oz, $149.95 P&H $5.75 Quantity to order:

Honor Guard NEW! Honor Guard is a remarkable systemic fungicide that contains 14.3% propiconazole, a proven preventive for a wide variety of rose diseases including blackspot, powdery mildew, anthracnose, and rust. At just 19¢ per gallon it's very inexpensive to use. Spray only every 21 days! Best when alternated with Compass, which has a different mode of action. Rate: 1 teaspoon per 3 gallons, a little more for rust. F864 Honor Guard, pint. $53.99 P&H $5.75 Quantity to order:

Heritage & Honor Guard Combo Save $10.00! The BEST fungicide combination available for roses! Z506 Heritage & Honor Guard Combo $196.94 P&H $7.50 Quantity to order:

Chipco 26019 Proven for Botrytis! Contact fungicide for the prevention and control of botrytis blight and other diseases. Rate: 1 tsp. per gallon to prevent, 2 tsp. per gallon to eradicate. H203 Chipco 26019, 2 lbs. $109.95 P&H $7.95 Quantity to order:

Decree 50% WDG Botrytis Doesn't Stand a Chance! Specifically for the prevention and control of botrytis blight, Decree belongs to a new class of chemistry called hydroxyanilides. It is a contact fungicide that prevents botrytis spores from attaching themselves to the plant, or stops the growth of spores if the disease is already active. Rate: one rounded teaspoon per gallon. One application every14 days during cool, wet weather. H249 Decree 50% WDG, 2.5 lbs., $239.95 P&H $5.40 Quantity to order:

Systemic Fungicide with Propaconizole This exciting product contains 1.55% propiconizol, the active ingredient in Honor Guard. Specifically for small gardens, Systemic Fungicide with Propiconizole offers the same exceptionally effective fungicidal activity as Honor Guard, and is very cost effective for people who grow fewer than 25 rose plants. Used every 7-10 days, this product prevents blackspot, powdery mildew, anthracnose, rust, botrytis, etc. Rate: 1-2 tablespoons per gallon. M635 Systemic Fungicide with Propiconazole, 8 oz. $22.95 P&H $5.25 Quantity to order:

Stature DM This new preventive/eradicant for downy mildew is getting rave reviews on the West Coast, where downy mildew has been a problem this season. It's the first translaminar (absorbed by leaf tissue) locally systemic fungicide available to combat downy mildew and some root diseases. It should be used every 10 to 14 days during times of high disease pressure, and always alternated with a disease-specific fungicide with another mode of action, such as Aliette and/or Protect T/O. Rate: 1 to 2 teaspoons per gallon. B220 Stature DM, 1 lb., $154.95 P&H $5.25 Quantity to order:

Aliette WDG Fungicide for supression of diseases caused by pythium and phytophthora and for supression of bacterial blight. Best treatment for prevention and eradication of downy mildew. Rate: 2 and 1/2 to 5 teaspoons per gallon. G112 Aliette WDG, 5 lbs., $169.95 P&H $7.75 Quantity to order:

Bordeaux Mixture Temperate climate gardeners will love this old standby for forcing dormancy on roses. A mixture of copper and lime, Bordeaux Mix should be combined with Saf-T-Side to make a very effective dormant spray. Kills fungus spores, pests, and defoliates plants in preparation for new growth. Save on spray material, and spray after pruning. For northern gardeners, this spray is best used in fall, rather than spring, to prevent spores and insects from overwintering, to speed dormancy in preparation for cold weather, and to defoliate late fall plants. Rate: 1/2 cup per gallon along with 4 tablespoons per gallon of Saf-T-Side. X770 Bordeaux Mixture, 3 lbs., $28.95 P&H $5.55 Quantity to order:

Dormancy Combo SAVE, SAVE 10%! V300 Dormancy Combo, Includes: Bordeaux Mix, 3 lbs., (regular price $28.95), Saf-T-Side, 2.5 gallons, (regular price $49.95), Orthene, 1 lb. (regular price $28.75). Special Price for All Three $96.50 P&H $14.95 SAVE 10%! Quantity to order:

Clearys 3336F Systemic fungicide for control of botrytis, blackspot, mildew, etc. Rate: 1 tsp. to 1 tbsp. per gallon. G009 Clearys 3336F, 1 quart, $74.95 P&H $5.25 Quantity to order:

Downy Mildew Combo SAVE 20%! Z244 Aliette, 5 lbs., and Heritage, 4 oz. $386.00 P&H $7.00 Quantity to order:

Junction A new combination of copper hydroxide (Kocide) and mancozeb, this highly effective fungicide prevents and eradicates black spot, powdery mildew, botrytis blight, canker, cane blight, spot anthracnose, rust, anthracnose, and fungal leaf spot. Should be used alternately with other fungcides. Best for early season and late season control. Avoid spraying open flowers. Spray residue can be wiped off for exhibition flowers. Rate: 1 and 1/2 tsp. per gallon. O461 Junction, 6 lbs., $79.99 P&H $7.95 Quantity to order:

Protect DF Turf and Ornamental fungicide is a wettable powder that prevents blackspot as well as botrytis and anthracnose on roses and other ornamentals. This product is even more effective when used with a spreader/sticker. Active ingredients: zinc ion and manganese bisdithiocarbamate. Rate: 1 and 1/2 tablespoons per gallon. G246 Protect DF, 3 lbs., $41.95 P&H $7.95 Quantity to order: G247 Protect DF, 1 lb., $12.99 P&H $5.95 Quantity to order:

GreenCure If you think baking soda controls powdery mildew, you'll love GreenCure. New from Bonide, this fungicide is labeled to control blackspot, downy mildew, powdery mildew, botrytis blight, gray mold, scab, and other diseases. It contains 85% potassium bicarbonate and should be sprayed every 7 to 14 days. Rate: 2 tablespoons per gallon. S224 GreenCure, 8 oz., $14.95 P&H $5.25 Quantity to order:

Rubigan E.C. For powdery mildew. A locally systemic fungicide for the prevention and therapeutic control of powdery mildew on roses and other ornamentals. Rubigan E.C. is absorbed into the plant foliage and is not easily washed off by rain or overhead irrigation. Rate: 1 to 2 teaspoons per 3 gallons. G135A Rubigan E.C., 1 quart, $129.95 P&H $5.25 Quantity to order:

Subdue Maxx Controls and eradicates downy mildew, botrytis blight, and a variety of root and stem rot diseases. Keeps flowers botrytis spot-free. Exceptional as a soil drench in early spring, and a must to eliminate any botrytis spores that may have formed on bareroot plants during shipping. Rate: 1/4 teaspoon per 4 gallons. Use in conjunction with Protect T/O for contact as well as systemic action. G122A Subdue Maxx, quart, $224.95 P&H $5.25 Quantity to order:

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