Growing Zephyranthes and Habranthus and various Amaryllids, I have had a real problem with Staganospora curtesii. I realised that it was winter time which seemed to be causing the biggest problem. As the bulbs never got dryish. Being outside. So I changed all the containers to a mix of 2/3 pumice and 1/3 potting mix. Which did not give much of an improvement. So even though it was a huge job I decided to redo the whole lot again this year using pure pumice. New Zealand pumice has been washed but still has lots of fines in it. So I rewashed every bit of pumice I used. Started with a cubic meter of the stuff, but now buy bags of it as I am nearing the end of the job. I now use 7mm pumice, although the cubic meter lot was smaller. I add slow release fertiliser to each container. And the bulbs are doing fine. Yes, they grow more slowly, but they are healthy. Quite a lot of the sick ones I threw out and have started growing fresh lots. I have not had to water much as winter time is a wet season. But once a week I water with fertiliser. And now going into summer, I water when required. Also I have passed tape through holes in the side of the containers to help drain that water table at the bottom. A few like Z. atamasco and Z. simpsonii have their own requirements so those I now grow in the bog garden. And some desert ones, I have put the containers against the house so they stay drier than the others. I grow lots of other bulbs which do not get pure pumice. I think we all have to find what suits our climate. Auckland has a subtropical climate and it gets humid in summer. Ina Crossley New Zealand