Twin City Seed offers organic and organic based fertilizers from Sustane.
Organic and Organic Based Fertilizers
| 4-6-4 (All Organic Starter Medium) | 50# bag |
| 8-2-4 (All Organic Medium 90% SRN) | 50# bag |
| 10-2-10 (+ Fe Fine 80% SRN) | 50# bag |
| 18-1-8 (+ Fe Medium 85% SRN) | 50# bag |
More formulations available upon request.