Best Under Gravel Iron Supplement?

Discussion in 'Plant Fertilizers' started by SFGiantsGuy, Apr 23, 2019.

  1. SFGiantsGuyWell Known MemberMember

    Kinda like a root tab: Red clay? Any others anyone may know of?
  2. Brans0628Valued MemberMember

  3. SFGiantsGuyWell Known MemberMember

    I also use those too, but I was more or less asking for very iron-rich Red Mexican clay...or something better or equal to that!
  4. KeeperOfASilentWorldWell Known MemberMember

    ADA Amazonia Soil is pretty rich in Fe. If you asked in terms of root tabs; ADA Iron Bottom Plus.