Apex 21-5-6 Super Iron Topdress is a high-quality controlled-release fertilizer for topdressing or broadcast application on shrubs and trees. Apex 21-5-6 Super Iron Topdress can be used year-round, and one application can release nutrients for up to 5 months. Apex 21-5-6 Super Iron Topdress is formulated with 21% total nitrogen, 5% available phosphate and 6% soluble potash.
Application: fertilizer.
Use on: container crops