Den. spectabile
 

I recently purchased a Den. spectabile and it is growing very well lots of new growth. I was wondering how big they have to be to bloom? Anyone know?...Jean

Sorry - I can't help, but would like to know also - I have a seedling - already have had it about 3 years, still quite small. I believe these get quite big, and have read they need to be rather big before blooming, but have also read they can bloom while still rather small. Even if the latter is the case, I wonder how small that would be. I imagine that mine has a ways to go in either case :p

I believe they have to be somewhere around 15" tall to bloom. I have one too that I'm waiting on.
Joann

I may not live to see mine get that big lol

I've had that thought for a couple of years:rofl::rofl:
Joann

hehe - yeah, I've had it three years already, and it's only - idk - 4,5 inches ? :p

I've read that they need to be 12-15" as well. I think it's worth the wait though. Mine is at 6" tall with the biggest growth.

As luck would have it I went to our orchid society meeting tonight and one of the members had one there with 4 or 5 blooming canes, some with 2spikes, really pretty. His had about 8 canes and they were only about 10 inches tall at the most. Mine are about 18 inches but only 4 canes. I am going to give them a pep talk in the morning. Will see if that helps...Jean

I just got one in a 2.5" pot. It's probably 3" tall how fast or slow does it grow. How much growth in a year?

I don't have one but Baker's culture notes indicate that growers say they must be fairly large and very root bound to bloom. Also they don't bloom in Singapore even tho they grow well, because they need a slightly cool dry winter which they don't get in temperate countries. Hope that helps.