Dendrobium farmeri

This plant flowered recently and i totally did not notice the developing flower spike at all.  It is mounted next to some coelogynes and i thought i wanted to "starve" the coelogynes to induce flowering so i did not water them at all for a few days.  The Dendrobium farmeri formed a flower spike instead and until now there is no response from the coelogynes at all.  That's a classic case of "有心栽花 花不发, 无心插柳 柳成荫".