Ironite Mineral Supplement 1-0-0 from the makers of Pennington

Safely use all through summer to maintain a deep green lawn
Creates a deep green lawn with REDUCED MOWING+
+versus regular lawn fertilizers that promote growth
Non-staining and non-burning
*when used as directed at the label application rate of 3 lbs / 1,000 sq. ft. will not burn or damage plants, shrubs, or grass
Boost regular spring and fall fertilizer routine
Use on lawns, flowers, shrubs, vegetables and trees
NPK 1-0-0

About This Product

Vibrant, deep green foliage is a sign of a vigorous plant. Pale green or yellow foliage can be caused by nutrient deficiencies which can be corrected by the Iron, Sulfur and other minerals found in Ironite Mineral Supplement. Use this product to green up your lawn and garden.

How To Use

For best results on lawns, use 4 times per year as a supplement to your regular fertilizer program.

Apply according to rates provided on the product package, not to exceed 10 lawn applications per year.

Sizes:

Frequently Asked Questions

What is Ironite Mineral Supplement 1-0-0 and what does it do?

Ironite Mineral Supplement 1-0-0 is a granular lawn and garden fertilizer formulated to produce a deeper green lawn while reducing the need for mowing, vs. high nitrogen containing lawn fertilizers that promote lawn growth. It delivers iron and 1% nitrogen to grass, flowers, vegetables, trees, and shrubs to support vibrant growth.
What does the "1-0-0" mean on Ironite Mineral Supplement?

The numbers 1-0-0 represent the NPK ratio, meaning Ironite Mineral Supplement 1-0-0 contains 1% nitrogen, 0% phosphorus, and 0% potassium by the bag’s weight. This formulation focuses on iron and nitrogen delivery rather than a balanced macronutrient profile, making it ideal for greening rather than broad feeding.
What plants can I use Ironite Mineral Supplement 1-0-0 on?

Ironite Mineral Supplement 1-0-0 can be used on grass, flowers, vegetables, trees, and shrubs. Its versatility makes it suitable for both lawn care and general garden applications wherever a deeper green color and iron supplementation are desired.
How much area does Ironite 1-0-0 cover?

The 3 lb. bag of Ironite Mineral Supplement 1-0-0 treats up to 1,000 square feet, the 15 lb. bag treats up to 5,000 square feet, and the 30 lb. bag treats up to 10,000 square feet. These coverage options make it suitable for a range of lawn sizes, from smaller residential areas to larger lawn applications.
When should you put Ironite down on your lawn?

Ironite Mineral Supplement 1-0-0 is best applied when grass is actively growing and showing signs of color loss or slow growth. For most regions, this means application during the spring and summer growing seasons, though it can also be used in fall in warmer climates where grass remains active.
How do you apply Ironite Mineral Supplement 1-0-0?

Ironite Mineral Supplement 1-0-0 is a dry granular fertilizer that should be spread evenly across your lawn or garden. After application, watering the treated area helps activate the product and drives the nutrients into the soil where roots can absorb them.
Can you mix Ironite with other fertilizers?

Ironite Mineral Supplement 1-0-0 can be used alongside other fertilizers, but you should avoid combining it with high-phosphorus fertilizers. Phosphorus can bind with iron in the soil and reduce the iron's availability to plants, diminishing the effectiveness of the Ironite Mineral Supplement 1-0-0 application.
Will Ironite 1-0-0 help make my lawn greener?

Yes, Ironite Mineral Supplement 1-0-0 is specifically formulated to produce a deeper green color in lawns. The iron content supports chlorophyll production in grass blades, which is the key driver of rich, dark green turf color.
Does Ironite Mineral Supplement 1-0-0 reduce how often I need to mow?

Yes, one of the stated benefits of Ironite Mineral Supplement 1-0-0 is a reduction in mowing frequency. Iron-based supplements promote deep green color without stimulating the excessive leafy growth that nitrogen-heavy fertilizers can cause, so your lawn stays green with less shoot elongation.
Is Ironite 1-0-0 safe to use on vegetable gardens?

Ironite Mineral Supplement 1-0-0 is listed as safe for use on vegetables, along with grass, flowers, trees, and shrubs. Always follow the label application rates and avoid over-application.
What form does Ironite Mineral Supplement 1-0-0 come in — liquid or granular?

Ironite Mineral Supplement 1-0-0 in the 30 lb. size is a dry granular product. It is spread across the lawn or garden using a spreader, as opposed to the liquid Ironite Liquid Lawn & Garden Spray 7-0-1 formulation that is applied through a hose-end sprayer.
How is Ironite 1-0-0 different from a standard lawn fertilizer?

Unlike traditional balanced lawn fertilizers that provide significant levels of nitrogen, phosphorus, and potassium, Ironite Mineral Supplement 1-0-0 is an iron-forward mineral supplement with 1% nitrogen and no phosphorus or potassium. It is designed to enhance color and provide iron supplementation rather than comprehensive plant nutrition.
Can Ironite Mineral Supplement 1-0-0 be used on trees and shrubs?

Yes, Ironite Mineral Supplement 1-0-0 is approved for use on trees and shrubs in addition to lawns and garden plants. Iron deficiency in trees and shrubs often appears as yellowing leaves with green veins, and Ironite Mineral Supplement 1-0-0 can help restore dark green foliage in affected plants.