Milorganite
Milorganite Fertilizer 6-4-0 - 50 lb.
Best slow-release fertilizer for homeowners seeking lush, low-maintenance lawn growth.
Discover Milorganite, a trusted name in lawn and garden care. While specific details regarding its formulation, NPK ratio, and application instructions are not fully visible, Milorganite is widely recognized for its quality and reliability in promoting healthy plant growth. This product is typically associated with slow-release feeding and is often favored by homeowners and professionals alike for achieving vibrant, sustained results across various landscape settings. It represents a dependable choice for maintaining beautiful outdoor spaces throughout the growing season.
$12.99
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4425
#50 in Fertilizers
Price vs Category Average
-79%
Below average
Who it's for
- Homeowners worried about scorching their lawn in summer heat
- Gardeners seeking a lush, dark green lawn without concrete stains
- Eco-conscious consumers prioritizing sustainable, recycled lawn care solutions
Who should skip it
- Turf managers needing potassium for deep root and disease protection
- Sensitive neighbors bothered by strong, lingering organic smells
- Budget-focused buyers wanting to minimize heavy lifting and application frequency
Performance breakdown
Nutrient longevity
Slow-release formula provides consistent feeding throughout the entire growing season.
Burn resistance
Organic composition makes it nearly impossible to scorch your lawn.
Application versatility
Safe for use on lawns, flowers, shrubs, and vegetable gardens.
Soil health impact
Adds organic matter that improves soil structure and moisture retention.
Ease of handling
The fifty-pound bag is heavy and requires significant effort to maneuver.
Greening speed
Prioritizes long-term root health over immediate, aggressive color spikes.
Key Specs
Fertilizer
Features
- Slow-release feeding
- Reliable for healthy plant growth
What customers say
Customers highly value Milorganite Fertilizer for its premium quality and reliable, slow release. The most celebrated feature is the rapid, deep greening effect, often achieving the signature Milorganite green due to its iron content. Users trust its consistent nourishment over several weeks, making it a staple in successful lawn care. While the earthy odor is a noted drawback immediately after application, it dissipates quickly. Some find the price higher than synthetic options. Overall, the consensus confirms that Milorganite delivers exceptional, predictable results, solidifying its status as a trusted, high performance product for dedicated lawn enthusiasts.
Know before you buy
The 6-4-0 ratio indicates the fertilizer contains 6% nitrogen, 4% phosphorus, and 0% potassium. This formulation is designed to support steady leaf growth and root development without the risk of burning your grass.
Slow-release fertilizers break down gradually, providing a consistent supply of nutrients over several weeks rather than a quick burst. This reduces the need for frequent applications and minimizes the risk of nutrient runoff.
Yes, Milorganite is versatile and can be used on flowers, shrubs, and vegetables. Its gentle, non-burning formula makes it a safe choice for a wide variety of landscape plantings.
Because it is a slow-release, organic-based fertilizer, it is much less likely to burn your lawn compared to synthetic, high-nitrogen fertilizers. However, it is still best to follow the recommended application rates on the bag for optimal results.
For most lawns, applying Milorganite four times a year—around major holidays like Memorial Day, Fourth of July, Labor Day, and Thanksgiving—is a standard schedule that keeps the soil nourished throughout the season.
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$13