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Description:
Normally Astrophytum asterias seedling have the
standard 8 ribs, while only a small number of them have few or more ribs.
The form with only five ribs, is particularly rare because many of the 5
ribbed seedlings that occasionally appear will usually develop
additional ribs in a few years as they age. So it is quite exceptional
to see an old A. asterias with five stable ribs. This form
however looks suspiciously hybridized with myriostigma or
coahuilense and probably is not a pure 100% asterias.
Cultivation is not too difficult in a
greenhouse, although they grow quite slowly. The plants need a
loose well-drained
mineral soil. They need a good amount of
light. Watering can be done weekly during the
summertime, if the weather is sunny enough, with a little
fertilizer added. Kept this way, plants will show a
healthy, although slow
growth. They are
frost hardy to -4° (-10°) C
Propagation:
By
seeds.
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Cultivation
and Mail Sale 
