Good afternoon. Does anyone know how one can use fertilizer NPK 12-12-17 (Mg-S) for palm trees or in other words how to reduce the amount of Phosphates or Phosphorus so that the fertilizer does not damage the palm trees growing in soil? In our island I can't find any other fertilizer formula and importing (ordering online) fertilizer is unaffordable.
Other ingredients are:
22% SO3 (water soluble)
0.1% Bor (B, Borax?)
Now if that's not possible and if this fertilizer is useless or too dangerous for palms even in small amounts, what can I use it for/on? Thank you.