7-0-20 Stress Blend 3% Iron - Bio-Nite - Granular Lawn Fertilizer by Yard Mastery

$39.99 $44.99
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7-0-20 Stress Blend is a high potassium, low nitrogen lawn fertilizer to help your turf in and out of stressful situations. From freeze recovery to heat and drought stress survival situations, 7-0-20 Stress Blend is an excellent choice.

  • Covers 6,000 sq ft (18 lb) - OR - 15,000 sq ft (45 lb)
  • Analysis is 7-0-20:: N-P-K
  • Contains 3% Iron + Bio-Nite™
  • Great for a hearty pop of color and sweet relief for a stressed lawn

Product Description:
Yard Mastery’s 7-0-20 Stress Blend made its debut in 2020 with a limited run that summer. The results were so impressive that we wasted no time getting into the hands of all of our customers by making it one of the first year-round production ferts of 2021.

7-0-20 Stress Blend continues to “wow” us as even Allyn Hane himself can’t figure out why it delivers the results it does. The color pop that we see from it is truly beyond our expectations. Stress blend contains 7% nitrogen that’s slow release so it will feed a stressed lawn but not kick it in the face. A sick lawn still needs feeding and slow-release nitrogen is the healthy way to go. You will also find a stellar 20% potash in each bag of Stress Blend. Potash is awesome for a stressed lawn as it helps with water uptake and retention. Think about when you're sick: you want to stay hydrated first and foremost and it's the same for the lawn. When it's stressed it has to stay hydrated and potash helps with that by keeping cells turgid. (full of water)

7-0-20 Stress Blend also has a stack of micronutrients lawns need including magnesium, boron, copper, manganese, molybdenum, and zinc.

For warm-season turf, this is a great early spring app as your lawn is waking up slowly. Warm-season lawns always seem to wake slowly and it's not a good idea to bang them with too much nitrogen when they are awakening from winter slumber. Apply Stress Blend again in the fall as the lawn is heading into the winter.

For cool-season turf, this is your go-to late spring and summer fertilizer, hands down. Combine this with a shot of Hydretain and you will have a much better summer for sure.

All-Natural Bio-Nite™ in Every Bag!
Bio-Nite is a bio-solid filler we add to every bag of Stress Blend Fertilizer. Bio-Nite is the same thing as Milorganite, but instead of being sourced in Milwaukee, it comes from South Florida. The results were so impressive that we wasted no time getting into the hands of our customers. Is also what delivers the smell of success in every bag. That smell tells you that the included Bio-Nite is feeding microbes in the soil every time you apply.

Application Information:

Stress Blend Fertilizer can be used on the following grasses:

Cool Season Lawns - Kentucky Bluegrass, Turf Type Tall Fescue (all fescues), Ryegrass
Warm Season Lawns - Bermuda, St Augustine, Zoysia, Centipede, Bahia


An 18 lb bag covers 6,000 square feet

A 45 lb bag covers 15,000 square feet

Application  Details

Apply at 3 lbs per 1,000 square feet of lawn area

Apply every 30-45 days

Can be applied at any time during the growing season for both cool and warm-season lawns

Water-In  Instructions

Apply to a dry lawn, and water into turf within the first 48 hours with 1/4" of rainfall or irrigation

Sweep excess off sidewalks and driveways to avoid staining


Product Resources:

Shipping Costs

Included for most states within the U.S.

NO P.O. Boxes

$9.95 for CA, WA, ID, and OR

State Restrictions

Alaska (AK), and Hawaii (HI)


Yes, free stickers with this item

Typical Delivery Time

4 - 7 business days

Product Type


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