Suggestion for a large vigorous free flowering Onc.

[Mechanica071]

Just a word of advice, Onc. sphacelatum is a complete space hog and shows some reluctance to bloom. I had one for approximately 5 years with no blooms in sight. Only time I ever achieved a bloom spike on mine was after exposing it to 39 degree (Fahrenheit!) temperatures overnight, it threw one bloom spike off of one of three newly matured pseudobulbs.... Then promptly froze to death in an unexpected 19 degree cold snap. Lovely showy flowers once they bloom, but not always right for everyone!