Jack's Classic Acid Special
Top Pick
Jack's Classic

Jack's Classic Acid Special

4.6

Best water soluble fertilizer for acid loving garden plants.

A targeted solution for acid-loving plants that struggle in alkaline soil. By lowering pH levels, it unlocks essential nutrients like iron, ensuring vibrant foliage and prolific blooms for varieties that demand specific soil conditions.

$19.99

In stock

at

Calloways

Who it's for

  • Gardeners growing blueberries, azaleas, or hydrangeas in alkaline soil
  • Homeowners seeking a reliable, easy-to-mix liquid feeding solution
  • Enthusiasts wanting deep green leaves and abundant seasonal flowers

Who should skip it

  • Novice gardeners who do not regularly test their soil pH
  • Busy plant owners preferring a set-it-and-forget-it maintenance routine
  • Growers with diverse gardens containing many non-acid-loving plant varieties

Performance breakdown

pH Correction Efficacy

Rapidly shifts soil chemistry to unlock locked-out micronutrients for acid-lovers.

Excellent

Nutrient Solubility

Dissolves completely in water, ensuring zero clogging in irrigation or sprayers.

Excellent

Foliage Greening Power

High iron content quickly corrects chlorosis and restores deep, healthy color.

Excellent

Application Versatility

Works seamlessly as a root drench or a targeted soil amendment.

Excellent

Growth Stimulation

Balanced NPK ratio supports steady vegetative development alongside pH management.

Excellent

Ease of Handling

Lightweight packaging is convenient, though powder requires careful mixing to avoid dust.

Good

Key Specs

NPK Ratio

17-6-6

Package Weight

1.5 lbs

Form

Water Soluble Powder

Application Method

Root drench

Primary Benefit

Soil pH reduction

Water Soluble

Yes

Organic Certified

No

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Jack's Classic Acid Special

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Calloways
Calloways
In stock
$19.99
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