Down to Earth Acid Mix 4-3-6 1 LB
Best organic fertilizer for gardeners growing acid-loving plants and berries.
Nourish your acid-loving plants with Down to Earth's Acid Mix 4-3-6. This specially formulated fertilizer is ideal for rhododendrons, azaleas, hydrangeas, evergreens, blueberries, and raspberries, promoting vibrant blooms and abundant fruit. Apply in early spring for growth, again at bloom time, and in fall to support root development and enhance winter hardiness. Crafted from a blend of natural ingredients including cottonseed meal, fish bone meal, and kelp meal, it provides essential nutrients for plants that thrive in low pH soil.
$34.99
Owner Satisfaction
4.6
/ 5
Category Rank
1939
/ 4425
#1939 in Fertilizers
Price vs Category Average
-43%
Below average
NPK Ratio
436
/ --
Who it's for
- Beginners worried about accidental over-fertilization or nutrient burn
- Gardeners growing blueberries, azaleas, and other acid-loving plants
- Eco-conscious growers prioritizing sustainable and organic soil health
Who should skip it
- Indoor plant owners sensitive to earthy or organic scents
- Landscapers managing large gardens or extensive planting beds
- Impatient gardeners needing immediate soil pH correction
Performance breakdown
Nutrient Balance
The 4-3-6 NPK ratio perfectly supports acid-loving plant development.
Ingredient Quality
Premium organic inputs like kelp and fish meal ensure soil health.
Application Versatility
Granular form allows for easy distribution across diverse garden landscapes.
pH Optimization
Specifically engineered to maintain the low pH levels these plants require.
Seasonal Efficacy
Effective formula supports both spring growth and winter hardiness.
Bloom Support
Promotes consistent, vibrant flowering for rhododendrons and similar acid-loving species.
Key Specs
NPK Ratio
4-3-6
Fertilizer Type
Acid Mix
Fertilizer Form
Granular
Fertilizer Source
Organic, Natural
Nitrogen Percentage
4.0%
Phosphorus Percentage
3.0%
Potassium Percentage
6.0%
Container Weight
15.5 lb
Features
- Specifically blended for acid-loving plants
- Encourages lush flowers and fruit
- Promotes healthy root growth
- Boosts resistance to winter temperatures
- Contains a blend of natural ingredients
- Supports vegetative growth
- Enhances bloom development
- Ideal for evergreens and berries
What customers say
Gardeners praise the Down to Earth Acid Mix for its exceptional results with acid loving plants. Users observe healthier foliage and better yields, particularly with blueberries. Its organic, natural formulation is a significant advantage. The granular form provides consistent, slow release feeding, preventing plant burn and ensuring steady nutrient delivery for plants like rhododendrons and azaleas. While highly effective, some desire larger bag sizes for bigger gardens. Despite a natural earthy scent, this mix is considered a high quality investment for achieving specific soil pH needs and promoting robust plant vitality.
Know before you buy
This fertilizer is formulated for plants that thrive in low pH soil, including rhododendrons, azaleas, hydrangeas, evergreens, blueberries, and raspberries.
For optimal results, apply in early spring to support new growth, again when the plants begin to bloom, and once more in the fall to strengthen roots and improve winter hardiness.
The mix is crafted from natural sources including cottonseed meal, fish bone meal, kelp meal, rock phosphate, langbeinite, and humates.
It supports both. The 4-3-6 NPK ratio is designed to promote lush vegetative growth while providing the necessary nutrients to enhance bloom development and fruit yield.
Yes, the granular form is suitable for both container-grown acid-loving plants and those planted directly in the garden soil.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$35