Patience!
Some time after "the big freeze" that wiped out my 20-year orchid collection, Rod Venger gave me a 2" pot containing a tiny, 2-pseudobulb Dendrobium speciosum plant. The largest growth was about 1.5" tall.
Now, some 10-or-more years later, a "first bloom seedling" has emerged:
As a reference, that's an 8" basket it's in, the growth bearing the two spikes on the left is 27" tall, and the overall width, tip-of-spikes to leaves on the far right, is 52".
Here's a close-up of the pleasantly perfumed blossoms.