Acid Mix (25 lb Bag)
Best natural fertilizer for gardeners growing acid-loving plants like blueberries.
Nurture your acid-loving plants with Grow Organic's Acid Mix, a 100% natural fertilizer designed for optimal growth. This blend, featuring cottonseed meal, fish bone meal, and kelp meal, promotes robust vegetative development and vibrant blooms. Enhanced with 2.5% humic acids from Leonardite, it significantly improves soil structure and nutrient absorption. Easily applied to garden beds, trees, and shrubs, it's the perfect choice for rhododendrons, blueberries, and other plants thriving in low pH environments. Support your garden's vitality with this eco-friendly formulation.
$48.99
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4348
#50 in Fertilizers
Price vs Category Average
-21%
Below average
Package Weight
25
/ lb
Who it's for
- Budget-conscious gardeners managing large planting beds
- Gardeners growing acid-loving plants like blueberries and hydrangeas
- Plants struggling with iron deficiency or chlorosis
Who should skip it
- People seeking immediate, one-time soil pH correction
- Gardeners who prefer a quick, no-prep application process
- Beginners uncomfortable with precise measurement and soil monitoring
Performance breakdown
Soil pH Optimization
Specifically formulated to create the ideal acidic environment for finicky plants.
Nutrient Density
High-quality organic inputs provide a robust, slow-release feeding profile.
Soil Health Impact
Humic acids actively improve soil structure and long-term microbial activity.
Application Versatility
Granular texture works seamlessly across garden beds, shrubs, and trees.
Ingredient Purity
Certified organic composition ensures no synthetic chemicals enter your garden soil.
Ease of Distribution
Granular form allows for simple, mess-free spreading by hand or tool.
Key Specs
Package Weight
25 lb
Fertilizer Type
Natural Fertilizer
Fertilizer Form
Granular
Contains 2.5% humic acids from Leonardite
Ingredients
Cottonseed meal, fish bone meal, langbeinite, rock phosphate, kelp meal
Application Rate (Vegetables/Berries)
5-6 lbs per 100 sq ft or 100 linear feet of row
Application Rate (Trees/Shrubs)
1 lb per inch of trunk diameter
Organic Certified
True
Features
- Ideal for acid-loving plants
- 100% natural and eco-friendly ingredients
- Promotes strong growth and blooms
- Improves soil structure and nutrient uptake
- Easy application for various plant types
- Enhances plant vitality
- Supports rhododendrons and blueberries
What customers say
Gardeners consistently highlight the exceptional efficacy of this Acid Mix, noting dramatic improvements in the health and vibrancy of their acid loving plants, especially blueberries and rhododendrons. The 25 pound bag size is frequently mentioned as providing outstanding value for money, making it a cost effective solution for maintaining large garden areas. Users appreciate the reliable results and the ease of application, confirming this mix is a trusted staple for specialized soil needs.
Know before you buy
This fertilizer is formulated for plants that thrive in low pH environments, such as rhododendrons, azaleas, blueberries, camellias, and hydrangeas.
For trees and shrubs, apply 1 pound of the granular mix per inch of the plant's trunk diameter. Distribute the granules evenly around the drip line of the plant.
No, this product is not water-soluble. It is designed as a granular amendment to be worked into the soil, where it will break down gradually to provide nutrients.
The 2.5% humic acids derived from Leonardite help improve your soil's overall structure and increase the plant's ability to absorb the nutrients provided by the meal-based ingredients.
Yes, the Acid Mix is 100% natural and organic certified. It relies on ingredients like cottonseed meal, fish bone meal, and kelp meal to nourish your plants without synthetic chemicals.
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Ask Hayley anything about this product before you decide.
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$49