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MONTEREY

Monterey Iron Combo 1-0-2 Concentrate Fertilizer

Monterey Iron Combo 1-0-2 Concentrate Fertilizer is an excellent supplement fertilizer that restores the health, appearance, and growth of fruits, vegetables, and ornamentals. 

As low as $20.73
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Monterey Iron Combo 1-0-2 Concentrate Fertilizer Product Page
Min : 20.73 - Max : 48.68
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Price as of
11/04/25
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Monterey Iron Combo 1-0-2 Concentrate Fertilizer, manufactured by Monterey, is a broad-spectrum micronutrient fertilizer that controls and lessens iron and other micronutrient deficiencies in shrubs, trees, and lawns. 

This liquid fertilizer provides ornamental and garden plants with a balanced 1-0-2 npk formulation, including iron and copper. It is especially useful in iron chlorosis, a common nutrient deficiency that causes leaf yellowing; its quick correction of this condition helps plants recover their vibrant green color. 

Monterey Iron Combo 1-0-2 Concentrate Fertilizer is a well-balanced fertilizer that strengthens plants' resistance to environmental stressors, improves growth, and supports a more lush foliage. 

Tools Needed

It can be applied with a water bucket, handheld pump sprayer, or a hose-end sprayer.

How to Use

Hose End Shrub

  • Step 1: Determine how much Monterey Iron Combo 1-0-2 Concentrate Fertilizer 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 multiply them together (length X width = square footage). For lawns and turf, use 2 tbsp. of Monterey Iron Combo 1-0-2 Concentrate Fertilizer per gallon of water per 1,000 sq. ft. A general application for all other application sites will use 2 tbs. of product per 1 gallon of water once a month. Refer to the product label for specific application rates and restrictions. 
  • Step 2: Fill the sprayer or watering can with half the amount of water. Add in the proper amount of product to the water. Stir or agitate the solution while pouring in the remaining half of the water. Wait until the solution is fully dissolved in the water before application. 
  • Step 3: As a foliar spray, treat the top and bottom of plant leaves until wet, but not to the point of runoff. A soil application can be done by spraying around the plant's root zone. Reapply once a month or twice a month, depending on your preference. Do not water for at least 24 hours to avoid washing off fertilizer. This allows the uptake of nutrients into the leaf. 

Where to Use

Monterey Iron Combo 1-0-2 Concentrate Fertilizer can be applied on ornamentals, fruits, vegetables, lawns, gardens, trees, and shrubs. 

When to Use

Apply early in the morning or late evening when plants are actively growing. 

Do not apply if heavy rain is expected after application. 

Safety Information

Monterey Iron Combo 1-0-2 Concentrate Fertilizer 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. 

Special Considerations

This product contains Boron (B); use on any plants other than those recommended ay result in serious injury to the crops.

Adding more than the recommended rate may burn plants.

AvailabilityOnline
Restricted UseNo
Shipping Restrictions
* = not registered** = restricted use
32 Ounce: VT**
1 Gallon: VT**
BrandMONTEREY
Keith's Pro Tips"Water the plants appropriately. Over-watering can damage the plants and support disease growth. We recommend watering no more than 1 inch of irrigation once per week. Best to do so in the early morning so the foliage has enough time to absorb the moisture."
Product DrawbacksThis product may stain.
Application EquipmentHose End Sprayer, Pump Sprayer, Watering Can
Application MethodsDrench Treatment, Spot Treatment
Active IngredientNitrogen 1.00% Soluble Potash 2.00% Boron 0.16% Copper 0.13% Iron 4.00% Manganese 1.00% Zinc 0.80%
Product TypeFertilizer
FormulationSuspended Concentrate
Application RateFor lawns and turf, use 2 tbsp. of Monterey Iron Combo 1-0-2 Concentrate Fertilizer per gallon of water per 1,000 sq. ft. A general application for all other application sites will use 2 tbs. of product per 1 gallon of water once a month.
Shelf LifeMonterey Iron Combo 1-0-2 Concentrate Fertilizer will last for 3 years when stored in a dry, clean area.
Yield32 oz. of Monterey Iron Combo 1-0-2 Concentrate Fertilizer will cover up to 32,000 sq. ft.
Use SitesOutdoors
Time to KillMonterey Iron Combo 1-0-2 Concentrate Fertilizer may last up to 1 month after application.
Comparable ProductsMonterey Iron Combo 1-0-2 RTS
EPA Registration #N/A
More Information
Restricted Use No
Availability Online
Keith's Pro Tip "Water the plants appropriately. Over-watering can damage the plants and support disease growth. We recommend watering no more than 1 inch of irrigation once per week. Best to do so in the early morning so the foliage has enough time to absorb the moisture."
Time to Kill Monterey Iron Combo 1-0-2 Concentrate Fertilizer may last up to 1 month after application.
Chemical Type Fertilizer
Formulation Suspended Concentrate
Application Methods Drench Treatment, Spot Treatment
Product Drawbacks This product may stain.
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 Hose End Sprayer, Pump Sprayer, Watering Can
Mix Rate For lawns and turf, use 2 tbsp. of Monterey Iron Combo 1-0-2 Concentrate Fertilizer per gallon of water per 1,000 sq. ft. A general application for all other application sites will use 2 tbs. of product per 1 gallon of water once a month.
Use Sites Outdoors
Yield 32 oz. of Monterey Iron Combo 1-0-2 Concentrate Fertilizer will cover up to 32,000 sq. ft.
EPA Registration No. N/A
Shelf Life Monterey Iron Combo 1-0-2 Concentrate Fertilizer will last for 3 years when stored in a dry, clean area.
Comparable Products Monterey Iron Combo 1-0-2 RTS
Children or pets? No
Property Characteristics None

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