Fertilising with non-orchid fertilisers
I'm thinking of using my general fertiliser for my orchids too, after realising that my current orchid fert (Gaviota) is lacking in some trace elements. My Cattleya alliance orchids are showing signs of calcium deficiency, so I think I better act fast.
I'm thinking of using Phostrogen, with a NPK of 14:10:27, calcium:magnesium 2:5. If I use it at half strength would it be safe for my orchids? Can I switch to using this as my only fert for orchids too?
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