Model # 423008

Internet #202946234

Pennington 30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer
0021496008509

Pennington

30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer

  • Increases root growth and improves plant hydration
  • Use to loosen compacted soil
  • Covers up to 5,000 sq. ft.
$2749 /each

Frequently Bought Together

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

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

I am making compost for my home garden and like to improve its quality
Asked by: Raj
Howdy Raj, The measurement of Gypsum is: one bag per 100 square feet. This is a 10X10 foot area. Happy Gardening, Coach Dave
Answered by: CoachDave
Date published: 2017-03-01

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

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.
Asked by: jane
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
Answered by: Victus
Date published: 2017-05-01

Apply Gypsum in Garden

I have mulched garden area. Do I need to remove the mulch before applying gypsum?
Asked by: raycope
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
Answered by: CentralAnswers
Date published: 2017-05-15

Why is this product not available in WA state?

Asked by: Lily
It's available via online order and in-store pickup
Answered by: Victus
Date published: 2017-03-01
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Customer Reviews

30 lb. Fast Acting Gypsum Plus AST Dry Lawn Fertilizer is rated 4.4 out of 5 by 24.
Rated 5 out of 5 by from We are new to gardening in heavy clay. It doesn't help that the developer stripped ALL the top so... We are new to gardening in heavy clay. It doesn't help that the developer stripped ALL the top soil. Gypsum is supposed to help break up clay. After applying it to the entire property, not just the lawn, for a few years it certainly doesn't seem to hurt and may be helping. We now have topsoil at least an inch thick. Gypsum for the garden is getting harder to find, even at garden centers. This is easy to obtain; order online, pick up at the store when convenient.
Date published: 2016-11-19
Rated 5 out of 5 by from It really helps your lawn !... It really helps your lawn !
Date published: 2017-05-02
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-05-01
Rated 4 out of 5 by from 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.
Date published: 2016-07-19
Rated 5 out of 5 by from As advertised I always use this product and it continues to perform.
Date published: 2016-09-20
Rated 4 out of 5 by from very necessary for my soil well honestly what can you really say about gypsum? it came super fast with free shipping. it breaks up clay so that your water gets to the roots of your lawn or garden. it was very easy to order without having to go search for it at my local store which never has anything i want anyway. i love home depot online.
Date published: 2011-10-11
Rated 5 out of 5 by from 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
Date published: 2015-10-13
Rated 4 out of 5 by from Good product great service Gypsum works like it should. It will take several weeks and applications to see strong results. Ordered online. And had delivered to local store for free delivery. It arrived about a week early.
Date published: 2014-07-22
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