Description
Get a deep, rich green lawn with less mowing using Ironite Mineral Supplement 1-0-0 by Pennington. This iron-forward granular supplement greens up tired, pale turf through iron rather than a nitrogen growth surge — so you enjoy color without the extra clippings. The formula is non-staining and non-burning, and it works on lawns, flowers, shrubs, vegetables, and trees. Choose the handy 3 lb pouch for spot-treating trouble areas or the 15 lb bag for whole-lawn coverage.
Key Features
- Low-nitrogen 1-0-0 analysis: Builds deep green color without forcing fast, mow-heavy top growth.
- Iron-forward formula: Corrects yellowing (iron chlorosis) and revives faded, heat-stressed turf.
- Non-staining & non-burning: Won’t stain hardscapes the way many iron products do, and won’t scorch your lawn.
- Works on more than grass: Feed lawns, flowers, shrubs, vegetables, and trees for consistent landscape color.
- Any-season use: Apply whenever color needs a lift — spring, summer, or fall.
- Two sizes: 3 lb treats up to 1,000 sq ft; 15 lb treats up to 5,000 sq ft.
How to Use
- Spread: Apply the granules evenly to a dry lawn with a broadcast or drop spreader, following the rate on the bag.
- Water in: Irrigate after application to move the iron and minerals into the root zone.
- Repeat: Reapply as directed on the label to maintain deep color through the season.
Applications
Target washed-out spots, refresh color before a gathering, or treat the whole lawn for uniform green. Pair Ironite with your regular nitrogen fertilizer program when you want color control without pushing extra top growth.
Specifications
- Brand: Pennington Ironite
- Analysis (N-P-K): 1-0-0
- Type: Iron-rich granular mineral supplement
- Formulation: Granular
- Use on: Lawns, flowers, shrubs, vegetables, trees; all grass types
- Properties: Non-staining, non-burning
- Coverage: 3 lb up to 1,000 sq ft · 15 lb up to 5,000 sq ft
- Available sizes: 3 lb pouch, 15 lb bag
What Do the Numbers 1-0-0 Mean?
The three numbers on every fertilizer label are the N-P-K ratio — the percentage by weight of the three primary nutrients:
- 1 — Nitrogen (N): Drives leafy green growth. Ironite’s low 1% nitrogen greens the lawn without triggering the rapid blade growth that means more mowing.
- 0 — Phosphorus (P): Supports root development and flowering. This supplement contains none, so it won’t contribute to phosphorus runoff.
- 0 — Potassium (K): Aids overall hardiness and stress tolerance. Not included in this formula.
A 1-0-0 product is a color supplement, not a complete fertilizer: its job is to deliver iron for deep green color, which is why it pairs well with — rather than replaces — your regular feeding program.
Stop by Garoppo’s to pick one up, or schedule local delivery within our service area.






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