Hi Ken According to the bloke of Holtz he's in the USA castinae aren't great lovers of water once a week is enough but a good drenching and while ever the plant has leaves keep watering and feeding, when the leaves drop stop watering, I live in Oz and have approx 50 of these plants in my collection Rebecca Northern " shima" being one last year it had 7 spikes and was lucky enough to fluke Grand Champion.....regards Elermore