> I read they do not like direct light, but rather need bright, indirect. My understanding was that even the strongest fluorescent T5 light you can give plants equals to this "bright indirect" light level from plant culture descriptions - because real sun is SO MUCH brighter. I was at an orchid show a couple of weeks ago at New York Botanical Garden, and they had a lot of companion plants including many species of Maranta and Calathea growing on the floor of the greenhouses. I should totally have measured the light there with my phone (unlike orchids, these did not seem to be temporary exhibit, so it would have been meaningful), but I did not think to do it. Maranta growing in the ground is quite a sight to see, by the way. It's a very low ground cover - its habit is to try to grow roots into the soil at every node, so it does not reach up at all, except for its tiny little purple (or white) flowers. Very cute. I am thinking how to replicate this look at home. When it was growing on my window sill a winter ago, a long vine crept along the window sill - and it did flower at that time as well. I cut it up at that time to fill out the pot, but I am starting to think just letting it crawl where it wanted to go was a better idea. It does not seem to want to grow upright at all. > can you take a light measument? I did, finally. On my light stand, it was getting around 200-700 fc (it was on the less bright shelf not directly under lights). On the bathroom counter, I get 15-20 fc. This is with an uncalibrated phone light meter app, so absolute levels may be wrong, but comparatively, they do tell a story, I think. The plant stand was getting 16 hours a day on a timer at the time, and the bathroom day is roughly as long (manual turn on/off), maybe a bit shorter.

Squidy...sorry that no one has responded yet...you know how the holidays can be!! To me, it looks like a fungal problem...but, there are so many, many variables. If it was my plant...and it is NOT H. tsangii...I would buy a fungicide from one of the big "box stores" and spray the plant thoroughly...top and bottom of each leaf..and the vines, and keep out of bright sunlight for a day or two. It's perfect that you removed the "bad" leaves..the fungicide would have never "cured" these leaves...if, indeed, it's a fungal attack. Please be sure that you're not over-watering this plant...fungus tends to occur when the plants are kept too moist or in very high humidity. Best wishes, Patrick

aurorawa and Jan, such beautiful leaves on those plants. I am starting to appreciate the leaves as much as the blooms and some of your plants are just stunning. Marco

Carnosa and pubicalyx might be ok but not the rest. I am in zone 10, I have to cover some if it gets below 50.