Suståne® 50 lb. 4-6-4 Medium Grade All-Purpose Fertilizer For Sale 2025

Suståne® 4-6-4 fertilizer is an organic slow-release fertilizer and soil builder ideally suited for plant establishment as vegetation starter for low P soils. Specifically formulated to be gentle on plants, making it a go-to fertilizer for spreading with seed and applying to seedlings. It works by replenishing the soil with a rich supply of humus (stabilized organic matter) and the essential nutrients required for sound and long term fertility programs.

• Provides a combination of slow-release nutrients and organic substances that improve soil health.
• Derived from biologically stable compost plus natural potash and feather meal.
• OMRI Listed®