Re: Irapeanum and friends

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Abgeschickt von Darcy Gunnlaugson am 17 Februar, 2000 um 04:47:24

Antwort auf: Re: Irapeanum and friends von Alastair Robinson am 17 Februar, 2000 um 00:16:32:

Hi Alastair.. et al;

you wrote:


: : As one who has experience in maintaining Calypso in cultivation, do you find that catering to the needs of the fungus are important, or do you simply grow the plant - leaving the fungus to its own devices?

Due to problems with this post Alastair and I have communicated privately, but for the sake of continuity of the thread here, I will restate that Calypso bulbosa variety occidentalis (which has completely different environmental requirements than variety americana) requires inclusion of it's fungal partner in any transplant situation, or it will unequivocaly die (equally true with v. americana) . Occidentalis lives in hemlock and fir forests, and a medium of this forest floor compost/duff is required to sustain it and particularly it's partner. Top dressing annually with litter and needle fall from hemlock/fir is important to replentish the acidic organic material the fungus thrives upon. I do this with my trough gardens of them, but the plants growing naturally on my property of course do not require my attention in this manner. Other variables like a ~nearly~totally dry dormant period in summer, and a wet winter, are likely condusive to fungal health, as well as avoidance of chemicals of any kind/ An underlying soil substrate below the the upper litter area and a top dressing of forest moss also has proven benificial. The use of chemicals, including chlorinated water, will kill the partner, and the Calypso will slowly languish and die thereafter. It is a true symbiotic relationship and the invisible partner, in this case, is the most important one, and a very delicate one. It was thought this was much the same situation with Cypripedium for many years, but we have now proven otherwise. My reason for using Calypso as an example in the first place, was that I felt the Mexican alliance might have a similar fungal relationship, and if that was so, then experimentation with mature divisions in different mediums (maybe even with some of it's contraband fungal attendant--I didn't say that did I) would provide a way to establish and sustain it, which in turn would allow for successful seedling transplants, rather than the heartbreaking failures all growers in sterile culture have experienced. With the loss of Sterling Dickinson as a major source of seed, this becomes even a more disheartening challenge and at the same time it becomes more imperative that we find a solution. Brain storming here, is one way to pursue possible solutions.