Why won't my sharry baby bloom????

[ScottMcC]

I bought it in spike in Jun. At that time, the spike was about 28 inches long. Throughout Jun and July, the spike grew to about 35 inches long, and the nodes started to swell a little bit, as though buds were going to burst out any minute.

Since then, it has stagnated. The spike is still pleasantly green, just not developing further. The plant itself has grown significantly during this interval, and the 3 new growths that were just starting when I got it are almost mature now.

I have this plant sitting next to my cattleyas in a SW facing window, temps 70-80 daytime, sl cooler at night, humidity 50-70%, still in the fine bark mix and plastic pot in which it came, fertilize with MSU at 125 ppm every watering.

Any suggestions, other than just being patient???? I'm about to just give up and transplant it into s/h, since all my other s/h plants grow so well. It is actively growing new roots now--the only thing holding me back is I'm nervous about repotting while it's in spike.