How soon can I throw down some new seed? I would like more kentucky blue in my lawn.

you have created a force field. only way is to put down new loam 1/2'' thick then seed . late august aerate lawn then seed,& do it like your feeding the chicken & those hens are hungry. next year you will not believe, keep your deck clean & blades sharp. GOOD LUCK

Okay to use in August?

I have Poa Annua and have been doing a lot of research on it. Many websites with information about Poa Annua say for effective control, besides Spring treatment it is good to put pre emergent down in August/September. Here is a quote from the Purdue University Extension website: "Poa annua is a winter annual that germinates in the late summer/early fall once soil temperatures fall below 70o F. Seedlings mature in the fall, overwinter in a vegetative state, and flower and produce seed in late spring and early summer." I just chatted with Scott's website and they said this product can be effective when used in this manner. I plan to apply it then AND next Spring. Most of the lawns in my development have been taken over by Poa Annua but I am still fighting the fight and hope to win or at least keep it to a minimum.

I just applied Crabgrass preventer. How long must i wait to lay down seed to grow grass?

You don't. You wait till late summer to winter to seed. Crabgrass preventer will negatively affect seed for one, because it will be rooting right into the chemical barrier. If it even does come up it will not do well and likely die during the heat of summer unless you are in warmer areas.. Secondly Disturbing the soil will bring up crabgrass seeds. Deal with the bare areas, treat the weeds and seed later.

Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food: Covers up to 5,000 sq. ft., 13.35 lbs., in FL

Product ID: 349390594

Details

Brand
Scotts
Global Trade Identification Number
Item form
Powder
Item weight
6.06 kg
UPC
032247323673

⏳Season-long crabgrass prevention

🌱Covers 5,000 sq. ft. lawn

💧Rain & freeze resistant formula

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₩477780

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Description

🌿 Lock in lush, crabgrass-free lawns before your neighbors do!

ALL SEASON LAWN SHIELD - Stops crabgrass before it invades, protecting your turf all season long.
RAPID GREEN UP FORMULA - Fertilizer boosts fast, vibrant growth right after winter’s dormancy.
OPTIMAL WATER ACTIVATION - Works best with just 1/4 to 1/2 inch of water within 2-3 days post-application.
TRUSTED BRAND EXCELLENCE - Scotts’ proven formula with 4.5-star rating from over 5,000 users.
WEATHERPROOF PERFORMANCE - Rain, snow, or freezing temps won’t compromise effectiveness.

Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food is a 13.35 lb powder that covers up to 5,000 sq. ft., delivering season-long crabgrass prevention combined with a fast-acting fertilizer to green your lawn quickly after winter. Its rain and freeze-resistant formula ensures reliable performance in variable spring weather, making it a trusted choice for professional-quality lawn care.

Reviews

E**.

My lawn looks really green and healthy, and it's just the end of March 2026. Will redo a 2nd round at the end of April.

29.03.2026

T**Y

I trust Scott’s products. This greened up my lawn quickly. Hopefully it keeps the crabgrass away as well. I’m

3.04.2026

B**M

I use this product every spring and fall and my yard always comes back looking fuller and healthier

23.03.2026

G**E

Well done, delivered and working well in my yard.

26.03.2026

H**R

I bought this at a great price

9.04.2026

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

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ASIN	B000I1M5NG
Brand Name	Scotts
Coverage	5000 square feet
Customer Reviews	4.5 4.5 out of 5 stars (5,054)
Global Trade Identification Number	00032247323673
Item Form	Powder
Item Weight	6.06 kg
Manufacturer	Scotts
UPC	032247323673
Unit Count	213.6 Ounce

Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food: Covers up to 5,000 sq. ft., 13.35 lbs., in FL

Details

Details

Description

Specifications

Reviews

Common Questions