Sponsored
$82.99 $0.12 per ounce
FREE delivery Monday, November 23. Details
In Stock
$$82.99 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$82.99
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Shipper / Seller
Yard Mastery
Yard Mastery
Shipper / Seller
Yard Mastery
Returns
Returnable until Jan 31, 2027
Returnable until Jan 31, 2027
For the 2026 holiday season, eligible items purchased between November 1 and December 31, 2026 can be returned until January 31, 2027.
Quick refund
Usually issued within 24 hours. See exceptions
Shipping fee
May apply, not eligible for free return. See details
Convenient dropoff
At any of our 50,000 US locations.
See return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.
Sponsored
  • 7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers 15,000 Square Feet - 7% Nitrogen - 3% Iron - 20% Potash - Safe for All Lawns - Apply All Year Round
  • 6 VIDEOS

7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers 15,000 Square Feet - 7% Nitrogen - 3% Iron - 20% Potash - Safe for All Lawns - Apply All Year Round

4.6 out of 5 stars (554)
$82.99
$0.12 per ounce
Get a $60 Gift Card: Pay $22.99 $82.99 upon approval for Amazon Visa. No annual fee.
Brief content visible, double tap to read full content.
Full content visible, double tap to read brief content.
Size: 45 lbs
{"desktop_buybox_group_1":[{"displayPrice":"$82.99","priceAmount":82.99,"currencySymbol":"$","integerValue":"82","decimalSeparator":".","fractionalValue":"99","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"nGwZV8tExmgiaeFR1q3iTXZlc9pz6QZNJONQW0uVHIoi9d8XP37BI%2B3wDSrOQMe7eXBWTeceeYFVmUrMYJ1pEtT253%2FcMqw1Rmt3O80gaM2n2NgROqTGHvpxnxFkFoubyRvtQer3GgWHuinR4gFgI1pX4e49CpR9CqzLmL5Gt3gpA9mWtM1vJNi2Y139Bnj2","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

About this item

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

Additional Details

Small Business
Shop products from small business brands sold in Amazon’s store. Discover more about the small businesses partnering with Amazon and Amazon’s commitment to empowering them.
Learn more
Small Business
This product is from a small business brand. Support small. Learn more
Sponsored

Frequently bought together

This item: 7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers 15,000 Square Feet - 7% Nitrogen - 3% Iron - 20% Potash - Safe for All Lawns - Apply All Year Round
$82.99 ($0.12/ounce)
Get it Nov 24 - 25
In Stock
Ships from and sold by Yard Mastery.
+
Yard Mastery Soil Testing Kit, Professional Grade, DIY Lawn and Garden, 13 Nutrient Levels, Prepaid Return Postage
$34.99
Get it Nov 23 - 24
In Stock
Ships from and sold by Yard Mastery.
Total price: $00
To see our price, add these items to your cart.
Details
Added to Cart
Choose items to buy together.

Customers who viewed this item also viewed

Page 1 of 1 Start over
Previous set of slides
Next set of slides

Product description

new stress blend fertilizer

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

7-0-20 Stress Blend is 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

7-0-20 Stress Blend (with Bio-Nite) - Granular Lawn Fertilizer

Stress Blend Results

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.

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.

When it's stressed it has to stay hydrated and potash helps with that by keeping cells turgid. (full of water)

stress prills

It's great fert for sure, but the color pop that we see from it is beyond our expectations.

Maybe it's the amount of potassium releasing nutrients somehow, or maybe it's the 3% iron or both.

Surely it can't be the 7% nitrogen because all 7% is slow release so while that does bring some color at that low amount it shouldn't be producing the results it does.

Bio-Nite all natural bio-solid

Bio-Nite is an all natural bio-solid; the same thing as Milorganite but instead of being mined from the bowels of Milwaukee, Bio-Nite comes from South Florida.

Smells like massive success which lets you know it's working. Bio-Nite being all natural also means it feeds the soil when you apply, nice! So with Stress Blend you get the best of the Milo along with a whole heaping helping of other nutrients.

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 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 Fertilizers. 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

Coverage

  • An 18 lb bag covers 6,000 sq ft
  • A 45 lb bag covers 15,000 sq ft

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

7-0-20 Stress Blend
FREEDOM 17-7-6
12-12-12 Starter Fertilizer
24-0-6 Flagship
16-0-0 Double Dark
Buying Options
Buying Options
Buying Options
Buying Options
Buying Options
Customer Reviews
4.6 out of 5 stars 554
4.7 out of 5 stars 70
4.5 out of 5 stars 96
4.6 out of 5 stars 622
4.5 out of 5 stars 262
Nitrogen (N) 7% 17% 12% 24% 16%
Phosphorus (P) no data 7% 12% no data no data
Potassium (K) 20% 6% 12% 6% no data
Iron (Fe) 3.1% 0.15% 3% 3% 6%
Magnesium 2% 2% no data no data no data
App Rate per 1000 Sq. Ft. 3 lbs 3 lbs 3 lbs 3 lbs 3 lbs
Bag Coverage 6,000 - 15,000 sq ft 6,000 - 15,000 sq ft 6,000 - 15,000 sq ft 6,000 - 15,000 sq ft 6,000 - 15,000 sq ft

Product information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

Feedback

7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers 15,000 Square Feet - 7% Nitrogen - 3% Iron - 20% Potash - Safe for All Lawns - Apply All Year Round

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

From the brand

  2. What makes Yard Mastery different?

    We formulate the way a professional turf technician would — concentrated actives, no

    filler, and honest application rates. Every Yard Mastery liquid gives you the same chemistry the pros trust, in a bottle sized for your yard. Built by lawn obsessives. Made in the USA.

  3. .37 Prodiamine
    flagship fertilizer
    new stress blend fertilizer
    16-0-0

    Build A Yard Mastery Program

    Visit the Store

  4. Who’s behind Yard Mastery?

    We’re not a big agricultural chemical brand. We’re a small team of turf geeks, soilscience nerds, and weekend warriors who got tired of watered-down homeowner products. So we built our own — real concentrations, real sea kelp, real coverage, at honest prices.

Important information

Safety Information

Keep out of reach of children and pets. Avoid contact with skin and eyes. Wear appropriate protective clothing, gloves, and eye/face protection during application. In case of accidental ingestion, seek immediate medical advice. Store in dry conditions away from moisture, and discard any remaining product after 2 years.

Directions

Apply to a dry lawn and water into turf within the first 48 hours with 1/4'' of rainfall or irrigation. Apply at 3 lbs per 1,000 square feet of lawn area. Apply every 30-45 days. Prepare the lawn by sweeping excess off sidewalks and driveways to avoid staining. Determine the correct amount of product to apply based on lawn size: 18 lb bag covers 6,000 square feet, and 45 lb bag covers 15,000 square feet.

Sponsored

Similar brands on Amazon

Page 1 of 1Start Over
Sponsored
Previous page
  1. Shop the Store on Amazon ›
    PetraMax Neighbor’s Envy Grass Fertilizer for Lawn, (16,000 sq ft, 1 Gal) | 7-in-1 Liquid Lawn Fertilizer Concentrate for Deep Green Turf - Includes Nitrogen/Iron/Sea Kelp - Pet-Safe Liquid Fertilizer
    PetraMax Neighbor’s Envy Grass Fertilizer for Lawn, (16,000 sq ft, 1 Gal) | 7-in-1 Liquid Lawn Fertilizer Concentrate for Deep Green Turf - Includes Nitrogen/Iron/Sea Kelp - Pet-Safe Liquid Fertilizer
    4.34.3 out of 5 stars778
    $59.49
  2. Shop the Store on Amazon ›
    GS Plant Foods Liquid Humic Acid Soil Amendment for Lawn & Plants, 1 Gal | For lawns, gardens, trees, houseplants & greenhouses. Mixes with most liquid fertilizers. Up to 64,000 sq ft per jug
    GS Plant Foods Liquid Humic Acid Soil Amendment for Lawn & Plants, 1 Gal | For lawns, gardens, trees, houseplants & greenhouses. Mixes with most liquid fertilizers. Up to 64,000 sq ft per jug
    4.64.6 out of 5 stars2,532
    $42.95
  3. Shop the Store on Amazon ›
    Liquid Aeration for Lawn - Humic & Fulvic Acid, Covers 10,000 Sq Ft | Humic Acid & Fulvic Acid Liquid Concentrate, Organic Plant Food Enhancer, For Lawn, Plants, Turf Grass & Garden | X689
    Liquid Aeration for Lawn - Humic & Fulvic Acid, Covers 10,000 Sq Ft | Humic Acid & Fulvic Acid Liquid Concentrate, Organic Plant Food Enhancer, For Lawn, Plants, Turf Grass & Garden | X689
    4.54.5 out of 5 stars43
    $76.80
  4. Shop the Store on Amazon ›
    Farmer’s Secret Soil Revitalizer - Organic (OMRI Listed) Dirt Health Booster - Liquid Compost Soil Amendment - Activated Humic Acid - Great for Fall/Spring Application (32oz)
    Farmer’s Secret Soil Revitalizer - Organic (OMRI Listed) Dirt Health Booster - Liquid Compost Soil Amendment - Activated Humic Acid - Great for Fall/Spring Application (32oz)
    4.54.5 out of 5 stars2,504
    $18.99 List:$19.99
  5. Shop the Store on Amazon ›
    Endurant Turf Colorants - Premium Spray On Green Grass Paint for Lawns - Revives Dry, Patchy Yards - Versatile Grass Hue - Easy to Use, Concentrated Turf Grass Dye - Covers Approx 1,000 Sq Ft - 32Oz
    Endurant Turf Colorants - Premium Spray On Green Grass Paint for Lawns - Revives Dry, Patchy Yards - Versatile Grass Hue - Easy to Use, Concentrated Turf Grass Dye - Covers Approx 1,000 Sq Ft - 32Oz
    4.34.3 out of 5 stars590
    $42.95
Next page

Customer reviews

4.6 out of 5 stars
554 global ratings
Sponsored

Customers say

Customers find this fertilizer to be of high quality and effective, with one noting it works particularly well for high stress lawns. The product helps lawns recover from drought, with one customer reporting their St. Augustine grass turning from brown to deep green. Customers report their lawns are growing rapidly, with one mentioning their grass perking up within 4 days, and they appreciate its stress-reducing properties.
AI Generated from the text of customer reviews

Select to learn more

43 customers mention quality, 37 positive, 6 negative
Customers find this fertilizer to be of high quality, describing it as amazing and perfect for their lawns.
This is a great product but do not apply to your lawn unless the temperature is cooler than 80° and then I water my lawn for 3 to 4 days every day.Read more
Stress fertilizer for end of summer. good product. Keeping my centipede grass healthyRead more
PerfectRead more
My St Augustine lawn in California really benefited using this product after long spring and summer days!...Read more
42 customers mention effectiveness, 34 positive, 8 negative
Customers report that the fertilizer works well, with one mentioning it performs particularly well in high phosphate soils and another noting its effectiveness in summer heat.
low stress fertilizer, doesn’t burn your grass, works greatRead more
This stuff works. Turned the lawn from brown to deep green after drought in summer.Read more
Worked great protected my lawn during the hot summerRead more
Easy to figure out exactly how much you need per 1k sq ft. I saw results within a week. Just what my lawn needed.Read more
18 customers mention greening, 15 positive, 3 negative
Customers report positive results with their lawns after using this fertilizer, noting improved color and density, with one customer mentioning their lawn turning from brown to deep green after a summer drought.
...Bermuda grass recovered within a week of rain fall and looks amazing - green, lush and growing like crazy.Read more
...I put down 8lbs per 1000 sf and watered in and in a week grass was dark green and starting to grow back in the dead spots....Read more
This stuff works. Turned the lawn from brown to deep green after drought in summer.Read more
...Very happy with the results... green lawn with neighbor envy. The centipede looks great, and the zoysia plugs are doing well also.Read more
15 customers mention growth, 12 positive, 3 negative
Customers report positive results with their lawns, noting rapid growth, with one customer mentioning their grass perked up within 4 days and another reporting thick and fast regrowth.
...The Bermuda grass recovered within a week of rain fall and looks amazing - green, lush and growing like crazy.Read more
...I've been able to revive and extend the life of the centipede while the zoysia plugs get established and take over....Read more
I love this product it does not cause sudden growth but, provides the needed nutrients to lower lawn stress and promote a greener lawn....Read more
...I don;t know if it works or not yet. I just know it destroyed my new pavers leading up to my front door and left my pristine sidewalk in the uglies.Read more
7 customers mention stress tolerance, 5 positive, 2 negative
Customers report positive experiences with the fertilizer's ability to help stressed lawns, with one customer noting that it provides the necessary nutrients to improve lawn health.
This is probably a good product for some stressed lawns, depending on the weather. I live in an area that has lot of triple digit temperatures....Read more
...It has been hot and dry and this fertilizer has definitely helped the lawn with stressRead more
If you are purchasing this for stress tolerance don't do it. This is nothing but regular fertilizer and not summer guard....Read more
low stress fertilizer, doesn’t burn your grass, works greatRead more
Sign in to see customer reviews.
Sponsored

Product Summary: 7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers 15,000 Square Feet - 7% Nitrogen - 3% Iron - 20% Potash - Safe for All Lawns - Apply All Year Round

From Yard Mastery

4.6 out of 5 stars, 554 ratings

Customer reviews

50+ bought in past month

Price

One-time purchase: $82.99 ( $0.12 / ounce)

Purchasing options

Other sellers

Other sellers

About this Item

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

Product Description

Bio-Nite is an all natural bio-solid; the same thing as Milorganite but instead of being mined from the bowels of Milwaukee, Bio-Nite comes from South Florida. Smells like massive success which lets you know it's working. Bio-Nite being all natural also means it feeds the soil when you apply, nice! So with Stress Blend you get the best of the Milo along with a whole heaping helping of other nutrients. The high potash is awesome for a stressed lawn as potash helps with water uptake and retention. Iron is there to give you some color response on top. It's 3% iron which if you look at a lot of lawn fertilizers sold in stores, they may have no iron or if they do it's 1.5% or less. Stress Blend also has a stack of micronutrients lawns need including magnesium, boron, copper, manganese, molybdenum and zinc. Best times to use Stress Blend: Really, anytime you want a surprising green response without causing a massive flush of growth, Stress Blend is a smart choice. But more specifically, 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 of bang them with too much Nitrogen when they are awakening from winter slumber. And then again apply Stress Blend in fall as the lawn is heading into the winter. 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.

Options Available

Size

  • 18 lbs
  • 45 lbs
Browse all available options

Important Information

Safety Information

Keep out of reach of children and pets. Avoid contact with skin and eyes. Wear appropriate protective clothing, gloves, and eye/face protection during application. In case of accidental ingestion, seek immediate medical advice. Store in dry conditions away from moisture, and discard any remaining product after 2 years.

Directions

Apply to a dry lawn and water into turf within the first 48 hours with 1/4'' of rainfall or irrigation. Apply at 3 lbs per 1,000 square feet of lawn area. Apply every 30-45 days. Prepare the lawn by sweeping excess off sidewalks and driveways to avoid staining. Determine the correct amount of product to apply based on lawn size: 18 lb bag covers 6,000 square feet, and 45 lb bag covers 15,000 square feet.

Report an issue with this product or seller

Feedback

Did you find this product summary feature useful?

Thank you for your feedback
Thank you for your feedback. You selected "Yes, it is useful"
Thank you for your feedback. You selected "No, it is not useful"
Product summary presents key information. Close to see all product details.