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Monterey Iron Combo 1-0-2 RTS
Monterey Iron Combo 1-0-2 RTS is a convenient ready-to-spray micronutrient fertilizer that corrects iron and other micronutrient deficiencies to improve the health of ornamentals, lawns, and garden plants.
04/10/26
Monterey Iron Combo 1-0-2 RTS, manufactured by Monterey, is an effective ready-to-spray liquid fertilizer that prevents and addresses iron and other micronutrient deficiencies to improve the overall health of plants.
This broad-spectrum iron supplement fertilizer provides a balanced mix of nutrients, including iron, potassium, and nitrogen, which work together to ensure healthy trees, shrubs, and vegetables. Iron prevents chlorosis and maintains green leaves, while potassium helps enhance root growth and stress tolerance—the small amount of nitrogen aids in general plant vigor and leaf development.
Monterey Iron Combo 1-0-2 RTS delivers rapid correction of iron and micronutrient levels with its ready-to-spray construction, offering a level of convenience that's hard to beat.
Tools Needed
Attach it to a garden hose.
How to Use
- Step 1: Determine how much Monterey Iron Combo 1-0-2 RTS to use by measuring the square footage of the treatment area. Find the square footage by measuring the treatment area's length and width in feet, then multiplying them together (length X width = square footage). Depending on how often you wish to apply, the rates will vary. For once a month, use 2 tbs. of Monterey Iron Combo 1-0-2 RTS per 1 gallon of water. For twice a month, use 1 tbs. of product per 1 gallon of water. For each watering, apply 1 tsp. of product per 1 gallon of water. Refer to the product label for specific application rates and restrictions.
- Step 2: Connect the bottle to your garden hose. Ensure the water hose is turned off before connecting it. Ensure the sprayer is set to the off position while connecting the hose.
- Step 3: Once the hose is connected and the water is flowing, ensure thorough coverage of the treatment area. Spray the top and bottom of leaves until wet, but not to the point of runoff. Do not water for at least 24 hours to avoid washing off fertilizer.
Where to Use
Monterey Iron Combo RTS 1-0-2 RTS can be applied to ornamentals, fruits, vegetables, lawns, gardens, trees, and shrubs.
When to Use
Apply foliar applications early in the morning or late evening. Turf treatments only apply when it is actively growing.
Do not apply if heavy rain is expected.
Safety Information
Monterey Iron Combo 1-0-2 RTS is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Keep out of reach of children and pets.
Special Considerations
Adding more than the recommended rate may burn plants. Do not use spraying devices that have been used with herbicides unless thoroughly cleaned.
| Restricted Use | No |
|---|---|
| Availability | Online |
| Signal Word | WARNING |
| Keith's Pro Tip | "Prune plants regularly; this will help lessen plant stress and decrease pest activity." |
| Time to Kill | Monterey Iron Combo 1-0-2 RTS will last for a couple of days. |
| Chemical Type | Fertilizer |
| Formulation | Ready-To-Use |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | This product may stain. Keep spray off areas such as: sidewalks, patios, driveways, fences, and painted areas. As a precaution, rinse off these areas with water after applying. |
| Active Ingredient | Nitrogen 1.00% Soluble Potash 2.00% Boron 0.16% Copper 0.13% Iron 4.00% Manganese 1.00% Zinc 0.80% |
| Application Equipment | Gloves |
| Mix Rate | For once a month, use 2 tbs. of Monterey Iron Combo 1-0-2 RTS per 1 gallon of water. For twice a month, use 1 tbs. of product per 1 gallon of water. For each watering, apply 1 tsp. of product per 1 gallon of water. |
| Use Sites | Outdoors |
| Yield | N/A |
| EPA Registration No. | N/A |
| Shelf Life | Monterey Iron Combo 1-0-2 RTS will last for 3 years when stored in a dry, clean area. |
| Comparable Products | Monterey Iron Combo 1-0-2 Concentrate |
| Children or pets? | No |
| Property Characteristics | None |
| Availability | Online |
| Restricted Use | No |
| Brand | MONTEREY |
| Keith's Pro Tips | "Prune plants regularly; this will help lessen plant stress and decrease pest activity." |
| Product Drawbacks | This product may stain. Keep spray off areas such as: sidewalks, patios, driveways, fences, and painted areas. As a precaution, rinse off these areas with water after applying. |
| Application Equipment | Gloves |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Nitrogen 1.00% Soluble Potash 2.00% Boron 0.16% Copper 0.13% Iron 4.00% Manganese 1.00% Zinc 0.80% |
| Product Type | Fertilizer |
| Formulation | Ready-To-Use |
| Application Rate | For once a month, use 2 tbs. of Monterey Iron Combo 1-0-2 RTS per 1 gallon of water. For twice a month, use 1 tbs. of product per 1 gallon of water. For each watering, apply 1 tsp. of product per 1 gallon of water. |
| Shelf Life | Monterey Iron Combo 1-0-2 RTS will last for 3 years when stored in a dry, clean area. |
| Yield | N/A |
| Use Sites | Outdoors |
| Time to Kill | Monterey Iron Combo 1-0-2 RTS will last for a couple of days. |
| Comparable Products | Monterey Iron Combo 1-0-2 Concentrate |
| EPA Registration # | N/A |
*Price does not include freight. We guarantee our rate plus shipping will be less than anyone else's price.




