Black Elephant Ear (Colocasia0

I planted 3 black elephant ear bulbs (Colocasia)about 3 weeks ago. They have had what I think is plenty of water (lots of rain here) and they aren't coming up yet. I hope the bulbs weren't duds. Any comments would be appreciated. Thank you, Janie

I have edible Taro and I've ok success with it here in Southern California. I put it in a big pot, but this year I'm moving it to the ground. I hope the move will inspire more growth. I do know I planted it too deep the first time and it took a long time to emerge.
It may be a that it just needs to warm up a little bit.

Hi Janie,
Colocasia are tropical plants. They like warm weather. In most areas is has not been hot enough to stimulate a flush of new growth yet. The tuber should be planted so about one or two inches is above the soil usually. Also the soil should have an ample amount of orgainc material, like a good planter mix incorperated into the soil, perhaps 75% or so. A good rich soil mix. Part shade is usually best unless you are very close to the coast, then they can tolearate more sun. Be sure to keep the soil mix mosit, but not soggy. By April they usually will be sending out some new shoots, and you might want to feed with a general purpose plant food for larger leaves. As long as the tuber does not feel soft and mushy I think you will be fine.