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Quantity
1
K-Mag Granular is a naturally mined fertilizer that delivers three essential nutrients in a single granular blend: 22% sulfur (S), 21.5% potassium (K), and 11% magnesium (Mg). This Langbeinite-based formulation supports robust early growth...
Reviews
5.0
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K-mag granular
Noticed magnesium deficiency last run at end trying this product for first time added to living soil for next run seems ok like being able to add as a dry amendment.
J
John · February 14, 2026
K=Mag
Can't really say what it's effectiveness is yet, but product was delivered in a timely fashion and price was good !
m
mark · September 21, 2025
Cool Stuff!
Still not 100% on all this stuff, but I know k-mag is crucial to bud development, and I'm building my organic collection. So far, the plants love it...I had to go easy tho to start, can burn plants if over applied...
