Red Ginger Plants Planted

R and I have just returned from a trip to Indonesia. What a great break. I'll post more on Bali sometime soon. Before we left, I planted four Red Ginger Plants (Alpinia Purpurata) in the space between our house and our neighbor's near our front patio. I planted them nearly two weeks before leaving. There was rain while we were gone, but when we returned some of the leaves have turned yellow and I'm not sure if they didn't get enough water. Even with the yellow leaves, I think the plants will eventually take.