Suståne 4-6-4 All Natural Flower & Vegetable Plant Food & Organic Fertilizer
Best organic fertilizer for home vegetable and flower gardeners.
Suståne 4-6-4 All Natural Fertilizer is an organic plant food designed to promote rapid vegetative establishment and quick ground cover, minimizing soil erosion. It replenishes soil with humus and essential nutrients for quality growth. Derived from biologically stable compost, natural potash, and feather meal, this fertilizer is suitable for organic fruit and vegetable production. It enhances soil's nutrient and water holding capacity, strengthens plant tolerance to stress, and promotes root development. This product is pathogen and weed-free, manufactured in the USA at an EPA permitted facility, and is safe for plants, people, and the environment.
$22.95
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4425
#50 in Fertilizers
Price vs Category Average
-63%
Below average
NPK Ratio
464
/ --
Who it's for
- Eco-conscious gardeners prioritizing long-term soil health and vitality
- Beginners worried about accidentally damaging plants with over-fertilization
- Home growers aiming for bountiful harvests and vibrant floral displays
Who should skip it
- Budget-focused gardeners seeking the most economical feeding solution
- Impatient growers needing an immediate visual boost for their plants
- Indoor gardeners sensitive to strong or earthy organic smells
Performance breakdown
Soil Health Impact
High organic matter content significantly improves soil structure and microbial activity.
Nutrient Release Consistency
Slow-release nitrogen ensures steady feeding without risking fertilizer burn.
Application Versatility
Granular form works effectively for both broadcast and targeted soil applications.
Organic Certification Integrity
OMRI listing provides total confidence for strictly organic gardening practices.
Drought Resilience
Enhanced water retention properties help plants survive dry spells between waterings.
Root Development Support
Balanced NPK ratio promotes robust, deep-reaching root systems for stronger plants.
Key Specs
NPK Ratio
4-6-4
Weight
5 lbs.
Form
Granular
Certification
OMRI Listed
Total Nitrogen (N)
4%
Available Phosphate (P2O5)
6%
Soluble Potash (K2O)
4%
Secondary Nutrients
Calcium (4.00%), Magnesium (1.00%), Sulfur (3.00%)
Features
- Promotes rapid vegetative establishment
- Replenishes soil with humus and nutrients
- Increases soil water and nutrient retention
- Strengthens plants against dry conditions
- Derived from compost, potash, and feather meal
- OMRI Listed for organic gardening
- Promotes better root development
- Safe for plants, people, and environment
What customers say
Suståne 4-6-4 is overwhelmingly viewed as a premium, highly effective organic fertilizer whose superior performance justifies the cost. Users report robust results, noting significantly increased yields and vibrant, healthy plants across gardens and vegetable patches. A key benefit is its all-natural, environmentally friendly composition, offering peace of mind around children and pets. Reviewers appreciate the mild odor compared to other organic options. The slow release formulation provides consistent nutrition, reducing the need for frequent feeding. While the initial investment is higher, consumers find the professional grade quality and reliable results make it a top-tier choice for serious organic gardening.
Know before you buy
Yes, Suståne 4-6-4 is OMRI Listed for organic gardening, making it safe and suitable for use on all fruit and vegetable crops.
This is a slow-release formula where 80% of the nitrogen is released gradually over time, providing consistent nutrition rather than a quick, short-lived burst.
Yes, the fertilizer contains 50% organic matter, which helps improve the soil's structure and increases its ability to retain both water and essential nutrients.
It is versatile enough for both. While it is excellent for rapid vegetative establishment in new plantings, it also provides essential nutrients to support the health and stress tolerance of established trees and shrubs.
No, the product is derived from biologically stable, composted materials that are processed to ensure the final granular product is completely pathogen and weed-free.
You can apply it via broadcast spreading over the soil surface or by incorporating it into the soil as a drench. It is designed for easy distribution across your garden beds or lawn areas.
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