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Richlawn
Richlawn Iron-Rich Fertilizer

Richlawn Iron-Rich Fertilizer

4.5(105 ratings)

Best price now

$39.95at eBayObserved at 9:57 PM

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Our take on the Richlawn Iron-Rich Fertilizer

Richlawn Iron-Rich Fertilizer is a 25 lb bag of granular lawn food with a 3-2-1 NPK ratio plus iron and sulfur, aimed at greening lawns growing in iron-poor soil. It covers about 5,000 square feet and releases slowly for up to 28 days. The best new price is $39.95 at eBay as of November 6, 2026, with three stores selling it new.

Best forLawns with pale or yellowing grass from low ironHomeowners who want a slow-release feedingCool- and warm-season grass lawnsBuyers who prefer a natural organic-based formula
Pros
  • Iron and sulfur target yellowing grass, not just nitrogen
  • Slow release feeds for up to 28 days
  • One 25 lb bag covers about 5,000 square feet
  • Natural organic-based formula
  • Safe around pets and kids when used as directed
Cons
  • Low 3-2-1 NPK means little nitrogen, phosphorus or potassium
  • Granular bag needs a spreader and even application
  • Not OMRI listed, so not for certified organic programs
  • Over-applying iron can stain walks and driveways

Richlawn Iron-Rich Fertilizer prices at every store

  • eBayNew

    In stockSold by factory-hardware-store

    $39.95Observed at 9:57 PM
    Visit eBay
  • WalmartNew

    In stockSold by Factory Hardware Store

    $44.99Observed at 9:57 PM
    Visit Walmart
  • Max WarehouseNew

    Out of stock

    $14.43Observed at 9:57 PM
    Visit Max Warehouse

Also available at

  • Stones Ace ofCheck price at Stones Ace of
  • Denver True ValueCheck price at Denver True Value
  • DK HardwareCheck price at DK Hardware

Store links may earn us a commission.

Richlawn Iron-Rich Fertilizer price history

Lowest price we've seen: $14.43 on Nov 7 at Max Warehouse. Tracked across 9 stores since Nov 7.

What reviewers say

  • 4.5 / 5105 ratings

Rated 4.5 out of 5 from 105 ratings, buyers mostly report deeper green color and easy spreading. Complaints center on the low nutrient numbers and the need for careful, even application.

What people mention
  • Color resultsPraisedBuyers say yellowed grass turns greener within a couple of weeks.
  • CoveragePraisedOwners find one bag covers roughly the stated 5,000 square feet.
  • Nutrient ratioCriticisedSome say the 3-2-1 NPK is too weak to replace a regular fertilizer.
  • ApplicationMixedSpreading is easy, but uneven passes leave patchy color.
  • StainingCriticisedA few warn that iron granules stain driveways and walks.

Specifications

Type
Lawn Food, Fertilizer
Primary Use
Lawn Care, Lawn Food
Use
All-Purpose Lawn Food
Soil Type
Iron-poor soils
Form
Liquid
NPK Ratio
3-2-1
Micronutrients
Iron
Quantity

Questions and answers

Will this fix a yellow lawn?
It is made for iron-poor soils, and iron plus sulfur is what greens pale grass. If the yellowing comes from drought, pests or low nitrogen, this alone may not fix it.
How much lawn does one bag cover?
About 5,000 square feet at the label rate. Measure your lawn first so you buy the right number of bags.
How long does it last?
The slow release feeds for up to 28 days. Plan on reapplying about monthly during the growing season.
Is it safe for pets and kids?
Yes when used as directed. Water it in and keep pets and children off the lawn until it dries.
Is it organic?
It is natural organic-based but not OMRI listed, so it does not qualify for certified organic programs.
When is the price lowest?
Lawn food usually drops in late season and winter. The current best is $39.95 at eBay as of November 6, 2026.
Where is the Richlawn Iron-Rich Fertilizer cheapest?
At eBay, for $39.95, as of our latest check.
What do buyers say about the Richlawn Iron-Rich Fertilizer?
Rated 4.5 out of 5 from 105 ratings.
Where can I buy the Richlawn Iron-Rich Fertilizer?
6 stores we checked sell it, including Max Warehouse, eBay, Walmart, Stones Ace of, Denver True Value.

Stores we've priced the Richlawn Iron-Rich Fertilizer at

  • Ace Hardware deals and prices
  • doordash.com deals and prices
  • Walmart deals and prices
1
Size
1
Item Weight
25 lb
Coverage Area
5000 square feet
Active Ingredients
Iron
Ingredients
Sulfur, Iron
Organic
Natural organic based
Eco-Friendly Certifications
OMRI listed: No
Effect Duration
Up to 28 days, Slow release
Suitable Animal Type
Pets (when used as directed)
Suitable Application Site
Lawn
Suitable Plant Type
All Grasses
Typical Users
Kids (safe when used as directed)
Container Size
25 pound
Container Type
Bag
Packaging Size
25 pound
Packaging Type
Bag