I planted an upright elephant ear in a large cast iron bath tub 6wks ago, it has just started showing some growth. I believe that the cast iron tub is keeping the soil temperature low, the bulb is very large maybe 5" diameter and 12" long, or tall, the roots are fairly close to the bottom of the tub. I have good drainage, the soil stays moist all the time but yet not soggy, I was thinking of lifting the bulb up a bit to get it off of the the bottom of the tub to help it warm the roots. We just had a couple days of rain that I feel cooled the soil off again and caused growth to slow, it had just started showing signs of growth and then the rain seemed to slow it down. What is everyone's opinion of this EE in a tub? should I be more patient?