0021496008509

Pennington

Model 423008

Internet #202946234

30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer

$20.80 /each

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Product Overview

Pennington Fast Acting Gypsum Plus AST starts working immediately to increase water penetration and help loosen compacted soil, which gives roots more room to grow. It also provides calcium for your lawn without raising soil pH. This unique formula combines advanced soil technology, or AST, with high-quality gypsum to maximize the benefit to the soil.

  • Starts working immediately
  • Loosens compacted soil
  • Increases water penetration
  • Provides essential calcium and sulfur to the soil
  • Promotes root growth
  • Apply with any fertilizer spreader
  • Can be applied in the spring, summer and fall
  • Covers up to 5,000 sq. ft.
  • What is the Best Fertilizer for my Yard?

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Customer Questions & Answers

17 Questions22 Answers

Customer Questions & Answers

30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer
30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer

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2 answers

Can I use fast acting Gypsum Plus to my compost and if so how much for about 200 pounds of trash in the bin?

This question is from 30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer
Asked by
Rockville, Maryland
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July 20, 2016
I am making compost for my home garden and like to improve its quality
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Answers (2)

Asked by
California
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Home Improvement Profile: Professional
July 21, 2016
Answer: 
Howdy Raj,
The measurement of Gypsum is: one bag per 100 square feet.
This is a 10X10 foot area.
Happy Gardening,
Coach Dave
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Asked by
California
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Home Improvement Profile: Professional
July 21, 2016
Answer: 
Howdy Raj,
Gypsum use is measured by cubic feet (volume) rather than weight. The usual amount is one 30lb bag per 100 square feet.
This is a 10X10 area for the Gypsum. Mixing into the soil is the quickest way to get the soil draining correctly.
Happy Gardening,
Coach Dave
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2 answers

I have very compacted soil in my lawn, I'm going to have aeration in this fall, can I use pennington fast acting gypsum, lime with starter fertilizer

This question is from 30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer
Asked by
marietta, ga
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August 5, 2015
I have very compacted clay soil in my lawn, I'm going to have aeration in this coming fall, can I use pennington fast acting gypsum, lime with starter fertilizer together before overseeding? It would be greatly appreciated if you can answer my question, thanks you in advance.
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Asked by
Sammamish
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September 4, 2015
Answer: 
That's the same condition of my front lawn and I am using this. I have applied this, tilted the soil, reapplied and re-tilted and it seems to have loosen the soil somewhat. I am re-seeding my front lawn and seeds are germinating so I am assuming this product is helping. Final verdict will come next season
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Asked by
bluffton sc
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August 7, 2015
Answer: 
YES, THE GYPSUM IS VERY HELPFUL IN IMPROVING DRAINAGE AND HAS NOT DAMAGED ANY OF MY PLANTS OR GRASS.
YOU WANT TO BE SURE SMALL CHILDREN DO NOT PLAY IN THE YARD FOR AT LEAST TWO "WATERINGS" OVER TWO WEEKS. THERE IS "SPECULATION" THAT THE GYPSUM MIGHT CAUSE SOME HEALTH ISSUES BUT NOTHING IS DOCUMENTED BY CDC
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2 answers

Apply Gypsum in Garden

This question is from 30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer
Asked by
naperville IL
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July 29, 2015
I have mulched garden area. Do I need to remove the mulch before applying gypsum?
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August 11, 2015
Answer: 
Hello,
Our recommendation when applying the Pennington Fast Acting Gypsum is to remove the mulch and apply it directly to the soil. The mulch could interfere with the gypsum getting into the soil thereby reducing its effectiveness.
Thank you
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Asked by
bluffton sc
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August 2, 2015
Answer: 
No you may apply it over the mulch, but if you are using it to improve drainage in the soil it is best used by blending it into the soil with a tiller or by hand.
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2 answers

Why is this product not available in WA state?

This question is from 30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer
Asked by
Seattle, WA
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May 4, 2015
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Asked by
Sammamish
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September 4, 2015
Answer: 
It's available via online order and in-store pickup
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May 14, 2015
Answer: 
Dear Valued Home Depot Customer,
We reached out to MFG for more information and below is their response.
“That is an outdated restricted list. We will update the available states.”
Thanks
The Home Depot User Generated Content Team
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  • 2016-08-27 T13:42:16.169-05:00
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Customer Reviews

Rated 4.3 out of 5 by 20 reviewers.
Rated 2.0 out of 5.0 by Not Great Don't see any thing to make me get more. Will just put old veggie in the ground as that work the best for me July 12, 2016
Rated 4.0 out of 5.0 by Works as designed It takes a couple of applications over a few months to really start seeing the difference but it is a great product to use in the summer when regular fertilizer would burn the grass. Suggest that frequent watering would push along the soil enhancement even further. July 19, 2016
Rated 2.0 out of 5.0 by Burned up lawn It burned up my grass, it's really strange, I use penning products all the time, in some parts of my lawn it greened it up but in the more established lawn it burned it up!!! May 10, 2016
Rated 5.0 out of 5.0 by Love this product Great product. Good results Would buy again ...................................... May 17, 2016
Rated 4.0 out of 5.0 by Very Pleased I was pleased with the results and I will purchase again. Used this on the side of my home where a tree was removed. April 26, 2016
Rated 5.0 out of 5.0 by Another good HD purchase The bag was EZ 2 open and the granular material was EZ 2 pour into the spreader. The material did not clump and was EZ A LEE spread. April 26, 2016
Rated 5.0 out of 5.0 by Gypsum Works well on countering the salt from the bay that gets on the lawn and the dog urine spots. This product use to be stored in store at half the price , now it is special order October 13, 2015
Rated 4.0 out of 5.0 by Result will show after one season Since this product will not show effectiveness (soil loosening) until after one season or so, I am providing review on the product itself as it arrives, price paid and ease of application. I'd say 4-star on the overall product, price paid and ease of application. It comes in granule form which is easy to apply without the inherent problem of powder form blowing in every direction when apply. September 4, 2015
  • 2016-08-25 T13:26:47.337-05:00
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