Agave - too much water?
We planted 6 of these narrow leaf agave in late April or early May. Three are doing OK (not great, but OK) the other three are turning yellow like the one in the picture. I'm guessing I'm watering too much or at least was in the beginning. I was giving them a good soaking with a spray nozzle every two weeks. I think it's too late to save these three but I'm hoping for some advice to save the others!!