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MONTEREY

Monterey Epsom Salts

Monterey Epsom Salts is a versatile, natural source of magnesium and sulfur that supports chlorophyll production in roses, canes, and shrubs, leading to greener foliage and improved flowering. 

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Monterey Epsom Salts Product Page
Min : 22.97 - Max : 22.97
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Price as of
04/10/26
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Monterey Epsom Salts, manufactured by Monterey, is a high-quality magnesium source specially formulated to improve rose, cane, and shrub health by aiding in chlorophyll production. 

This water-soluble granule supplies magnesium 9.8% and sulfur 12.9%, two nutrients often lacking in plants. The magnesium is essential for chlorophyll production and photosynthesis, contributing to strong, green leaves and overall plant vitality. Sulfur plays a crucial role in enzyme activity, amino acid production, and overall metabolic function, which aids in increased flowering and fruiting. 

Monterey Epsom Salts is a valuable plant aid that effectively corrects common yellowing and chlorophyll levels in roses, cane, and shrubs for the average plant owner. Plants treated with this product often exhibit vibrant green foliage and restored plant health in a sufficient amount of time. 

Tools Needed

This product will need to be mixed with a handheld pump sprayer or backpack sprayer. 

A chemical measuring cup may also be used for soil applications. This should not be reused for food purposes. 

How to Use

backpack spray new

  • Step 1: Be sure to remove or examine discoloration in plants. If you find the yellowing is caused by other conditions, such as fungi or pests, be sure to take care of the infestation first. Determine how much Monterey Epsom Salts to use by measuring the square footage of the treatment area. Find the square footage by measuring the treatment area length and width in feet, then multiply them together (length X width = square footage). For foliar applications, apply 1/4 cup (4 tbsp.) of Monterey Epsom Salts per 1-2 gallons of water to cover 500-1000 sq. ft. For soil applications for roses and shrubs, use 1/4 cup of product. 
  • Step 2: To mix for foliar applications, you will need to fill your sprayer with half the amount of water. Pour in the proper amount of product and the remaining half of the water. Agitate the tank until it's dissolved completely. 
  • Step 3: Spray the diluted solution onto the top and bottom of the plant leaves until wet, but not to the point of runoff. Apply 2-4 applications throughout the growing season. For soil applications, apply around the base of the plant. A follow-up summer application may also be made. 

Where to Use

Monterey Epsom Salts can be used for roses, cane, and shrubs. 

When to Use

Apply early in the spring when new growth begins for roses and shrubs. You may also apply throughout the plant's growing season. 

Safety Information

Monterey Epsom Salts 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

Protect from exposure to extremes of temperature and humidity during storage. 

More Information
Restricted Use No
Availability Online
Keith's Pro Tip "Roses require at least 6 hours of sunlight of the day, so be sure they receive enough sunlight to aid in photosynthesis and keep the soil moist but not waterlogged."
Time to Kill Monterey Epsom Salts will product results within several days.
Chemical Type Fertilizer
Formulation Water Dispersible Granule (WDG)
Application Methods Granular Spreading
Product Drawbacks High-temperatures and excessive heat will effect the quality and success of this product during storage.
Active Ingredient Magnesium 9.8% Sulfur 12.9%
Application Equipment Backpack Sprayer, Pump Sprayer
Mix Rate For foliar applications, apply 1/4 cup (4 tbsp.) of Monterey Epsom Salts per 1-2 gallons of water to cover 500-1000 sq. ft. For soil applications for roses and shrubs, use 1/4 cup of product. 
Use Sites Outdoors
Yield 32 oz. of Monterey Epsom Salts will cover 32,000 sq. ft. when used at rate of 4 tbsp per 1,000 sq. ft.
EPA Registration No. N/A
Shelf Life Monterey Epsom Salts will last for 3 years when stored in a dry, cool storage area.
Comparable Products Magnesium Sulfate Heptahydrate Epsom Salt
Children or pets? No
Property Characteristics None
AvailabilityOnline
Restricted UseNo
BrandMONTEREY
Keith's Pro Tips"Roses require at least 6 hours of sunlight of the day, so be sure they receive enough sunlight to aid in photosynthesis and keep the soil moist but not waterlogged."
Product DrawbacksHigh-temperatures and excessive heat will effect the quality and success of this product during storage.
Application EquipmentBackpack Sprayer, Pump Sprayer
Application MethodsGranular Spreading
Active IngredientMagnesium 9.8% Sulfur 12.9%
Product TypeFertilizer
FormulationWater Dispersible Granule (WDG)
Application RateFor foliar applications, apply 1/4 cup (4 tbsp.) of Monterey Epsom Salts per 1-2 gallons of water to cover 500-1000 sq. ft. For soil applications for roses and shrubs, use 1/4 cup of product. 
Shelf LifeMonterey Epsom Salts will last for 3 years when stored in a dry, cool storage area.
Yield32 oz. of Monterey Epsom Salts will cover 32,000 sq. ft. when used at rate of 4 tbsp per 1,000 sq. ft.
Use SitesOutdoors
Time to KillMonterey Epsom Salts will product results within several days.
Comparable ProductsMagnesium Sulfate Heptahydrate Epsom Salt
EPA Registration #N/A

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