I have about three hundred Rhyn seedlings that I potted (by mistake) I wired them into the pots to grow.......Six months later (after doing nothing) they have actually started to grow...... in the last two months they've doubled in size.
I'm actually finding that most plants I have, they seem to be dormant for a few months and then sprout.
Saying that, I also have dens. that have flowered after being in coconut for 6 months.