Great ideas for a dragon fruit thread!
I could use some help with mine!
I have Physical Graffiti, and a yellow dragon fruit (Selenicereus megalanthus according to Pine Island Nursery, where I ordered them). I have had them for over 3 years now, and cannot get them to bloom! They were fairly large plants in gallon pots when I got them.
They have been in my tropical greenhouse, which never gets below 50F. I have tried SO many different things to try and get them to bloom - lots of water, little water, fertilizer, no fertilizer, letting them grow until they took over the place with greenery, pruning them down, more light, more shade, and nothing. I have no problem at all with getting my epiphyllums (orchid cactus) to bloom. I have recently moved the dragon fruit to the dormant house (gets into the high 30's in winter but never freezes), thinking maybe they need vernalization(?).
They grow like weeds, and seem really happy and healthy, other than no blooms. Aaarggh!
The only other things I can think of are, maybe, light intensity? Or do they have a critical photo period and I need to keep them in the light for a longer period each day?
Any help would be appreciated.
Thanks!