Skip to content
  • 💸 Save big, enjoy free shipping 💸
  • 💸 Save big, enjoy free shipping 💸
AmleosAmleos
  • Menu
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Landscaping Tools
    • Building & Maintenance Supplies
    • Gardening & Landscaping Tools
    • Snow Removal Equipment
    • Outdoor Power Equipment
  • Horticulture Supplies
    • Nursery Supplies
    • Herbicide Insecticide & Fungicide
    • Field Production
    • Greenhouse Supplies
    • Fertilizers & Treatments
  • Turf & Landscape
    • Weed Barriers
    • Shop by Job
  • Irrigation Supplies & Equipment
    • Shop by Job
    • Watering Cans
  • Shop by Job
    • Plant Markers & Plant Tags
    • Lawn Sprayers & Spreaders
    • Pest Control
    • Wheelbarrows & Carts
    • Arborist Supplies
Home / Horticulture Supplies / Herbicide Insecticide & Fungicide
  • Hydro-Max All-Natural Wetting Agent With Humic Acid -Amleos gp30162
  • Diamondback Herbicide Shells For Ez-Ject Herbicide System -Amleos ezshell diamondback
-30%
Reliant; Systemic Fungicide, 1 Quart

Reliant; Systemic Fungicide, 1 Quart

$35.95 Original price was: $35.95.$25.17Current price is: $25.17.

SKU: YW1SZ 422943943 Categories: Herbicide Insecticide & Fungicide, Horticulture Supplies
  • Shop with confidence, we guarantee quality.
  • 7 days free returns
  • Enjoy top quality items for less
  • Online customer care, always here for you.
Browse
  • Horticulture Supplies
    • Fertilizers & Treatments
      • Water Soluble Fertilizer
    • Field Production
      • Tying & Securing
    • Greenhouse Supplies
      • Shade Cloth & Fabric
    • Herbicide Insecticide & Fungicide
      • Pre-Emergent Herbicides
    • Nursery Supplies
      • Weed Control
  • Irrigation Supplies & Equipment
    • Shop by Job
    • Watering Cans
  • Landscaping Tools
    • Building & Maintenance Supplies
      • Work Wear
    • Gardening & Landscaping Tools
      • Yard & Garden Rakes
    • Outdoor Power Equipment
      • Water Pumps
    • Snow Removal Equipment
      • Winter Salt Solutions
  • Shop by Job
    • Arborist Supplies
      • Tree Fertilizer
      • Tree Rigging Equipment
      • Tree Support & Bracing
    • Lawn Sprayers & Spreaders
      • Sprayers
      • Spreaders
    • Pest Control
      • Rodent Repellent
    • Plant Markers & Plant Tags
      • Plant Labels
      • Plant Stakes
    • Wheelbarrows & Carts
      • Yard Carts
  • Turf & Landscape
    • Shop by Job
    • Weed Barriers
  • Uncategorized
  • Description
  • Reviews (0)

Product Information


Product Specs
  • Active ingredients: Mono and di-potassium salts of phosphorous acid (45.8%)
  • Container volume (ounces): 32
  • Application type: Soil drench, foliar spray, soil incorporation, basal bark treatment, or bare root dip
  • Key diseases: Sudden oak death (SOD), downy mildew, pythium, root rot, and fire blight
Product Warranty Information
  • This product is covered under A.M. Leonard’s exclusive 30-Day Down to Earth Guarantee. Click Here for more Details.
Product Features
  • Systemic fungicide
  • Contains mono- and di-potassium salts of phosphorous acid
  • Combined preventative and curative spray
  • Multiple application methods
Product Benefits
  • Controls diseases caused by the pathogen phytophthora
  • Works on vegetables, citrus, fruit and nut trees, ornamentals, landscaping, turf, conifers, and bedding plants
  • Aids healthy plants resist disease
  • Helps affected plants fight off disease while protecting new growth
  • Fast-acting formula increases plant survival rates
  • Pair with Pentra-Bark; for maximum effectiveness against sudden oak death
Product Shipping Weight
  • 3.25 pounds
Frequently Asked Questions
What is Reliant and what is it used for?
Reliant is a systemic fungicide that contains the active ingredients mono and di potassium salts of phosphorous acid (45.8%). It is used to control diseases caused by the pathogen phytophthora, including sudden oak death (SOD), downy mildew, pythium, root rot, and fire blight, on vegetables, citrus, fruit and nut trees, ornamentals, landscaping, turf, conifers, and bedding plants.

How does Reliant work and how should it be applied?
Reliant works as both a preventative and curative when applied through soil drench, foliar spray, soil incorporation, basal bark treatment, or as a bare root dip. It aids healthy plants to resist disease and helps affected plants fight off disease while protecting new growth. Reliant acts quickly, saving plants from disease-related damage or death.

What are the key diseases that Reliant can control?
Reliant can control diseases caused by the pathogen phytophthora, including sudden oak death (SOD), downy mildew, pythium, root rot, and fire blight.

What is the recommended rate of application for Reliant and what are some additional tips?
The rate of application for Reliant varies depending on the crop and application. Complete review of the product label is needed before applying. For maximum effectiveness against sudden oak death, it can be paired with Pentra Bark. This product can be applied to healthy plants to help them resist disease and to affected plants to help them kill the invasion while protecting new growth.

Additional Product Information
  • Product Label
  • SDS

Reviews

There are no reviews yet.

Be the first to review “Reliant; Systemic Fungicide, 1 Quart” Cancel reply

Related products

-30%
Flat Panel Tree Guards, 6in Diameter, 24in Length By A.M. Leonard
Quick View

Flat Panel Tree Guards, 6in Diameter, 24in Length By A.M. Leonard

$130.95 Original price was: $130.95.$91.67Current price is: $91.67.
-76%
V-FloFan, 240 V.
Quick View

V-FloFan, 240 V.

$394.00 Original price was: $394.00.$95.99Current price is: $95.99.
-30%
Agritape Grounding Screens
Quick View

Agritape Grounding Screens

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
-30%
Sapphire Time-Release Aluminum Sulfate, 180-Day Formula By Florikan
Quick View

Sapphire Time-Release Aluminum Sulfate, 180-Day Formula By Florikan

$87.48 Original price was: $87.48.$61.24Current price is: $61.24.
-30%
Hydretain ES Plus II With Humate, 32oz Hose-End RTU Bottle
Quick View

Hydretain ES Plus II With Humate, 32oz Hose-End RTU Bottle

$40.95 Original price was: $40.95.$28.67Current price is: $28.67.
-30%
Plant Pots, Deep Square, 3-1/4in Depth, Box Of 450 By T.O. Plastics
Quick View

Plant Pots, Deep Square, 3-1/4in Depth, Box Of 450 By T.O. Plastics

$95.95 Original price was: $95.95.$67.17Current price is: $67.17.
-30%
Tree Support System With EPDM Bands By Trellis Mate
Quick View

Tree Support System With EPDM Bands By Trellis Mate

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
-30%
Cover Plus Poly Film, Black/White, 40ft Width, 3mil By Ginegar
Quick View

Cover Plus Poly Film, Black/White, 40ft Width, 3mil By Ginegar

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping & Returns
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright © 2026 A.M.LEONARD. All rights reserved. This site is protected by copyright and trademark laws under US and international law.
    • Landscaping Tools
      • Building & Maintenance Supplies
      • Gardening & Landscaping Tools
      • Snow Removal Equipment
      • Outdoor Power Equipment
    • Horticulture Supplies
      • Nursery Supplies
      • Herbicide Insecticide & Fungicide
      • Field Production
      • Greenhouse Supplies
      • Fertilizers & Treatments
    • Turf & Landscape
      • Weed Barriers
      • Shop by Job
    • Irrigation Supplies & Equipment
      • Shop by Job
      • Watering Cans
    • Shop by Job
      • Plant Markers & Plant Tags
      • Lawn Sprayers & Spreaders
      • Pest Control
      • Wheelbarrows & Carts
      • Arborist Supplies
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.