Ina in New Zealand wrote:

If the "succulent mix" is mostly sand and grit, it should be
suitable. The natural substrate of this species is sand and scree of
volcanic origin (i.e., acidic), and the description of the
rediscovered wild populations suggested to me that it is a snowmelt
plant. I have a lot of them and grew them for many years in a mixture
of coarse sand, ground pumice, and a little humus. Now they're in
pure coarse volcanic-origin sand and gravel with some loam down
below, and they are currently flowering vigorously. I fertilize them
regularly during the growing season.

Jane McGary
Portland, Oregon, USA

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