| Dear taradale,
I have grown Paphs and Phrags for some time now (nearly 10 years) and I have completely stopped fertilizing them. The mix I use for both of them contains a fair bit of organic material, leaf material, peat, sphagnum, bark, so organic nutrients are available to the plants through the mix. I once used a bloom-booster at half strength but then stopped and noticed no appreciable difference. So, now i rarely if ever fertilize my slipper orchids and when I do I use only a balanced or bloom boost at about half strength.
Hope this is helpful.
-Kevin |