What is the amounts of nitrogen, phosphours and potassium?

It's 35-0-10 and in response to someone else; it's not gonna kill bermuda lawns using it over time :-/ . Been using this stuff since the 90's no issues. What kills lawns using fertilizer is when you keep using and using and using. Use it right the first time no issues will come.

May I apply it now (today is June 1, 2015)?

If you apply this fertilizer that contain 34-0-10 then the nitrogen will stimulate top growth which is not what you want in the winter time due to freezing weather. It's better to apply like 10-2-7 in winter. That way the roots are stimulated and not top growth.

Is it safe to apply this fall lawn food to newly sprouted grass seed? The grass is about 2 weeks old.

Avoid fertilizing any newly seeded lawn until after the 4th mowing. Scotts offers a fertilizer for newly seeded lawns that is safe to apply and recommended.

Will this work well in September in zone 9b, lower foothills of California central valley?

Daniel, thank you for your interest in Scotts Turf Builder WinterGuard Fall Lawn Food. This product may be applied at any time during the growing season, although it is especially beneficial in the fall as a "last feeding" because of the high potassium content. This will work well in September in the lower foothills of California central valley as you described. Feel free to call us at 877-465-5160 and we're happy to send you a sample lawn care schedule for your region and grass type.

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Scotts Turf Builder WinterGuard Fall Lawn Food, 12.5 lb. - Fall Lawn Fertilizer Builds Strong, Deep Grass Roots for a Better Lawn Next Spring - Covers 5,000 sq. ft.

Scotts Turf Builder WinterGuard Fall Lawn Food, 12.5 lb. - Fall Lawn Fertilizer Builds Strong, Deep Grass Roots for a Better Lawn Next Spring - Covers 5,000 sq. ft.

Product ID: 3619403

Details

Brand
Scotts
Item Form
Capsules
Item Weight
13.81 Ounces
Liquid Volume
473
Specific Uses For Product
Lawn

🌱Builds deep, resilient roots

📏Covers 5,000 sq. ft. efficiently

❄️Prepares lawn for harsh winter

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Details

Brand
Scotts
Item Form
Capsules
Item Weight
13.81 Ounces

Description

❄️ Feed your lawn now, flaunt a flawless green next spring!

ROOT POWER BOOST - Strengthens roots deeply for a lush spring comeback
GENEROUS COVERAGE - Feeds up to 5,000 sq. ft. – perfect for medium to large yards
SEASONAL SMART FEED - Optimized fall formula to repair summer damage and prep for winter
WATER NUTRIENT ABSORPTION - Enhances lawn’s natural ability to soak up essentials
UNIVERSAL GRASS COMPATIBILITY - Works seamlessly on all grass types for versatile lawn care

Scotts Turf Builder WinterGuard Fall Lawn Fertilizer is a 12.5 lb. powerhouse designed to nourish all grass types over 5,000 sq. ft. Its unique fall-focused formula repairs summer stress, builds deep roots, and boosts water and nutrient absorption, ensuring your lawn emerges vibrant and resilient after winter.

Specifications

ASIN	B000I1M5OU
Best Sellers Rank	#12,012 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #473 in Garden Fertilizers
Brand	Scotts
Brand Name	Scotts
Coverage	Full
Customer Reviews	4.6 out of 5 stars 13,817 Reviews
Global Trade Identification Number	00032247386050
Included Components	Fall Lawn Fertilizer
Item Form	Capsules
Item Type Name	winterguard lawn food
Item Weight	13.81 Ounces
Liquid Volume	473 Milliliters
Manufacturer	Scotts
Mixing Ratio	30-0-10
Model Number	38605D
Number of Items	1
Part Number	38605D
Specific Uses For Product	Lawn Fertilizer
Target Species	Lawn Grass
UPC	032247386050 032247022057 300024822559
Unit Count	200.0 Ounce

Reviews

A**R

26.04.2026

R**L

21.12.2025

L**E

15.11.2025

K**R

15.10.2025

E**.

18.04.2026

A**R

25.02.2026

S**O

15.02.2026

K**K

10.09.2025

R**R

11.11.2025

R**N

29.10.2025

M**Y

18.10.2025

A**R

23.09.2024

D**9

29.12.2017

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