Down to Earth Acid Mix Fertilizer NPK 4-3-6
Best organic fertilizer for acid-loving plants like blueberries and rhododendrons.
Nourish your acid-loving plants with Down to Earth's Acid Mix Fertilizer. This all-natural formulation, featuring an NPK ratio of 4-3-6, is ideal for blueberries, azaleas, rhododendrons, and evergreens. Apply in early spring and again at bloom time for vibrant flowers and lush foliage. A late fall application promotes robust root growth and enhances cold resistance. Crafted from natural ingredients like cottonseed meal and fish bone meal, it provides gentle yet effective feeding for plants thriving in low pH soil.
$17.95
Owner Satisfaction
4.6
/ 5
Category Rank
1939
/ 4425
#1939 in Fertilizers
Price vs Category Average
-71%
Below average
NPK Ratio
436
/ --
Who it's for
- Home orchardists prioritizing fruit yield over excessive foliage
- Gardeners growing blueberries, azaleas, and other acid-loving plants
- Organic growers seeking steady, low-maintenance plant nutrition
Who should skip it
- Gardeners needing an immediate fix for nutrient-deficient plants
- Budget-conscious shoppers preferring conventional synthetic fertilizers
- Pet owners concerned about attracting animals to garden beds
Performance breakdown
Nutrient Balance
The 4-3-6 ratio perfectly supports the specific needs of acid-loving plants.
Ingredient Quality
Premium organic inputs like fish bone meal ensure slow, steady nutrient release.
Application Versatility
Effective for both seasonal growth spurts and essential winter root protection.
Soil Compatibility
Expertly formulated to maintain the low pH levels these plants demand.
Ease of Use
Granular form allows for simple, mess-free distribution around shrub bases.
Growth Efficacy
Consistently produces deeper foliage color and more abundant seasonal blooms.
Key Specs
NPK Ratio
4-3-6
Package Weight
5 LB
Fertilizer Type
All-natural
Derived from
Cottonseed meal, fish bone meal, langbeinite, rock phosphate, kelp meal, and humates
Target Plant Type
Acid-Loving Plants, Trees and Shrubs
Fertilizer Form
Granular
Organic Certified
true
Season of Application
Spring, Fall
Features
- Specially blended for acid-loving plants
- Promotes lush flowers and healthy vegetation
- Enhances root growth and cold resistance
- All-natural derived ingredients
- Ideal for blueberries and rhododendrons
- Supports vibrant foliage
- Gentle, effective feeding
- Suitable for spring and fall application
What customers say
Customers consistently praise the high quality and visible effectiveness of this organic acid mix. Users report significant improvements in the health and vibrancy of their acid loving plants like blueberries and hydrangeas, often noting deeper color and robust growth. The granular formula is easy to apply, making it a reliable choice for both novice and experienced gardeners seeking a natural soil amendment. The consensus highlights its superior performance compared to synthetic alternatives, justifying the investment for those prioritizing organic methods and strong plant results.
Know before you buy
This formula is designed for acid-loving plants that thrive in low pH soil. It is particularly effective for blueberries, azaleas, rhododendrons, and various evergreens.
For optimal growth, apply in early spring and again when the plants begin to bloom. A final application in late fall is recommended to help strengthen roots and improve cold resistance during the winter months.
Yes, this product is organic certified. It is crafted from natural ingredients like cottonseed meal, fish bone meal, and kelp meal, making it suitable for organic gardening practices.
The 4-3-6 ratio provides a balanced nutrient profile that encourages lush foliage and vibrant flowers while supporting overall plant health. The higher potassium content specifically helps with root development and environmental stress tolerance.
No, this fertilizer is specifically formulated to lower or maintain a low pH level. Using it on plants that prefer neutral or alkaline soil may negatively impact their health and nutrient uptake.
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$18