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Soil Amendments

About soil amendments

Whether you need to add organic matter, add nutrients, or balance your soil pH, we have the organic soil amendments you need.

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Diamond K Solution Grade Gypsum (50 Lb)

F1153

$8.99 As low as: $7.19
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Humax (Gallon)
Humax (Gallon)

PSA800

$14.99
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Humax (5 Gallon)
Humax (5 Gallon)

PSA802

$59.99
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Monterey Manganese Sulfate 31% Powder (50 Lb)
Monterey Manganese Sulfate 31% Powder (50 Lb)

F1676

$49.99 As low as: $39.99
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Activate 80 Micronized Humate (30 Lb)
Activate 80 Micronized Humate (30 Lb)

F531

$89.99 As low as: $71.99
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Maxicrop Kelp Extract (44 lb Bag)
Maxicrop Kelp Extract (44 lb Bag)

F1366

$399.00 As low as: $319.20
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Nutra Min - Sierra Mountain Minerals (30 Lb Bag)
Nutra Min - Sierra Mountain Minerals (30 Lb Bag)

F1796

$59.99 As low as: $47.99
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