I finally got them repotted, when do I fertilize

[jasonmom]

Hi and thanks to everyone who has helped me through my first week with orchids. I repotted them in plastic cups that my hubby burned multiple holes into. Used miracle grow orchid bark. Chickened out and only cut off roots that were black. One of them had very little in way of roots. I guess now I just have to cross my fingers.

I don't trust my memory - I believe I'm supposed to wait 2 weeks before using a fertilizer. Is that right?