Coco Grower? Cal-Mag Deficiency Fast Check
Coco binds Ca/Mg; missing supplements lead to rust spots and pale stripes.
Coco Cal-Mag deficiency? Rust spots and pale stripes—see causes and analyze fast.
Common Causes
- No Cal-Mag with RO/coco
- Low pH
- High K competing
- Heavy runoff flushing Ca/Mg
How to Tell Which One You Have
Rust spots + interveinal yellowing on newish leaves in coco grows.
FAQ
Always add Cal-Mag in coco?
Yes, especially with RO.
pH target?
5.8–6.0 helps Ca/Mg uptake.
Is this just Ca?
Often both Ca and Mg in coco.