Grow Organic Acid Mix
Best natural fertilizer for gardeners growing acid-loving plants like blueberries.
This organic blend is the gold standard for coaxing vibrant blooms out of finicky, low-pH plants like blueberries and rhododendrons. While it requires a bit of manual application compared to synthetic sprays, the addition of humic acids ensures your soil actually improves over time rather than just providing a temporary nutrient spike.
$48.99
at
SeedTime (retailer)
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
Fertilizer Source
Organic, Natural
Target Plant Type
Acid-Loving Plants
Know before you buy
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