The terminal spike is a relatively rare event, which seems to happen randomly.
It probably had nothing to do with growing conditions. If 'odd' growing conditions were the trigger, terminal spikes would be reported much more frequently.
Years ago I had an intergeneric Vandaceous plant, which only bloomed through terminal spikes. However, it set a new basal keiki each time, so it kept going. That plant had Paraphalaenopsis, Vanda and possibly one more genus mixed in.
Last edited by Fairorchids; 09-07-2014 at 08:07 AM..
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marcoeverard 
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