Calostemma purpureum

Diana Chapman
Fri, 03 Jan 2003 09:33:47 PST
Dear All:

I have been growing Calostemma purpureum for several years, and find it to be one of the easiest Amaryllids to accommodate.  I grow it on a Mediterranean cycle, with my plants blooming in Fall, but I have noticed that pots that get water out of that cycle will start to sprout.  I've never tried to grow or flower it, though, in the summer.  It is generally said that Calostemma needs temperatures above 50F, but my plants are grown outside where they often experience light frosts with no deleterious effects, not even damage to the foliage.  The night-time temperatures in both locations where I have grown it are usually in the upper thirties or low forties.  I grow them in five gallon pots to give them the depth they prefer - they like to grow deep.  They bloom very reliably.  My plants have deep purple flowers, with the corona the same color as the tepals.  They will produce seed or bulbils (I was told they are bulbils) without any effort on my part, and without the need for outcrossing.  The seeds or bulbils take quite a while to mature.  I have some that are four to five years old and still aren't big enough to bloom.  The mature bulbs do make offsets, although not prodigiously, so seed is the best means of propagation.  They aren't fussy as to potting medium.  I have two sets of the yellow flowered variety, but neither set is mature enough to bloom - looks like it will be a while.

This is a really beautiful and unusual bulb, well worth growing.

Telos Rare Bulbs

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