Bertolonia
I posted some photos of this beautiful plant, Bertolonia marmorata, in the gallery (link below). It's the rock star of my terrariums. Being reflective with all that silver, it's more dramatic even than large variegated episcias (especially if you're not a big fan of lots of floofy pink stuff).
I've had these for a few years now, obtained as seedlings from a local woman; I don't remember where she got hers. These particular ones are seedlings of seedlings, I kept hoping to see some variation, but apparently this strain is stable now. The ones that look slightly more silver now could be the darkest in another few months, that just changes with light and temperature.
I have found them very easy to grow. They survived near freezing (while dry), drying out too much too often, and very high heat a couple summers. Of course they look terrible when abused, but they come back.
They are not fast growers, but they aren't too hard from cuttings, or from seed if you can get it. A couple weeks ago I found a seed pod that had been ignored for at least 3 months- I assumed the seed would be dead but I was wrong, at least a few still germinated. growing from seed is the same as with gesneriads, begonias, and other small-seeded moist growing tropicals. Sprinkle, cover with plastic, forget until they get crowded.
Basically their care is the same as a terrarium begonia. medium to low light, not much fertilizer, grow in a light mix or just chopped sphagnum. They love "dirty moss" which I make by tossing Sphagnum with a little pasteurized leaf mould/compost. They never look good when the air is dry. Under cover, they're very easy (If you don't abuse them like I do!)
I've recently started another variety of seed from Brazil: Bertolonia cf. ovata 'Bronze', which I'm looking forward to seeing grow up. all the other low growing kinds are on my wish list!
Unfortunately, there is almost nothing useful online about Bertolonia. Maybe I should do something about that...
Does anyone else grow Bertolonia in their terrariums?
Vincent
Here is a link that might be useful: Bertolonia in the Terrariums Gallery
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