Hi Joe, if you do a search on this forum you will find at least 3 posts that have come up in the last 3 or 4 months about growing this plant. Each one has really great information given by the growers on this forum. I think there is someone growing it in Chicago (or somewhere in the Midwest), which is closer to your zone, so they would have a better technique than I would have for you. So, that said, here are some tips for growing them that I have found useful. #1 When buying the plants, it is a good idea to start out with a couple young seedlings (like from Oakhill Gardens). They are relatively inexpensive so when you kill them (which everyone does on their first or second go around) it will not be massive monetary loss. But from that loss you will figure out how to best keep humidity levels up, how to water & fertilize, & how much light to provide. #2 Lots of people have had success with placing the sticks under a plastic dome (like a coke bottle with the bottom cut off). This will keep the breeze off the plants & humidity levels up (when plants become lager after a year or two, they should be able to handle more air movement). #3 When watering your plant, use distilled (or R.O.) water. Make sure that the sphagnum moss that they plant is growing on dries out well between watering (otherwise they will start rotting). I, like many other ghost growers, dunk the mount into a bucket a few times a week. You can make up a batch of water containing super thrive & mychorrizal fungi. Dunk the plant into this solution once or twice a week to give it an extra boost. Also remember, like vandas (which do not have pseudo bulbs to store water), when the roots are bright green, its not going to absorb anymore water. Let it dry out for a bit & then re-soak it. I used to get out of bed, spray it down; go back inside, shower, shave, make my lunch & an hour later as I was leaving, I would give it another good soaking. #4 Besides rot, the second biggest danger to your young ghost orchids is root desiccation (where they begin to shrivel & dry up). If this happens, you are getting too much air movement & loosing too much humidity (correcting the humidity problem will not fix the dried root, but it will stop other from drying out). You can try placing a wet paper towel or wash cloth into the enclosure to keep ambient humidity up. For me living in such a hot, humid zone, I use Spanish moss lightly draped across the mount. Initially when I got my ghosts, I pulled them off the mount with the sphagnum moss (because I had already killed one batch that I left on the sphag. moss) & placed it directly onto grape vine. They were doing okay, occasionally a root would start to shrivel & I would increase misting during the day. When I added the Spanish moss, I no longer had to do the extra misting; the daily watering was enough to keep desiccating roots at bay. #5 These young plants grow in moderately bright light. I'm not sure of your location or growing conditions, but medium Cattleya light would be good for young plants. I am sure older, established plants will take higher light levels to flower. #6 The young plants that you buy for $12 or $14 will take 4 or 5 (or maybe more) years to reach blooming size. After you have kept the little guys alive for a year or so & feel confident that you have gotten the living conditions just right then you might spring for a lager specimen. Established plants are not always easy to find on the web, but often at large orchid shows you can find plants 2-3 years away from blooming for sale for $35-$50. #7 The ghost orchid goes by 3 different names, when searching for information or growers who are selling plants, be sure to try all three names in your search terms for optimum results: Dendrophylax Lindenii, Polyradicion Lindenii, & Polyrrhiza Lindenii. Also, there are two different varieties of ghost orchids, one that grows in Florida & another that grows in Cuba. It is said that the one from Cuba is much more tolerant to air movement than the plants from Florida. I personally have no idea which version I have, or who sells the different versions. I do know that until the young plants became larger, they had to stay out of heavy air flows. #8 Dont give up if you kill a couple batches, these little guys can be very VERY tough to get established. A good tip for getting a lager sized seedling would be to call the vendor you decide to order from & ask for the largest sized plants they have available. I know it sounds stupid, but when I did this with Oak Hill, my 3rd order of ghost were much lager then my 1st. & 2nd. Orders. Good luck! -Ray-

Hi, Sue, In the current Oak Hill Gardens newsletter, the growing tip is about Ghost Orchids. If you scroll down almost to the bottom of the page linked below, you'll see the section for News and Updates. They are successful in blooming these (check out the pix!), and their conditions are different from mine. That said, April before last, I spoke w/ Greg in person, describing my conditions for the Ghost. He thought the big vase/candle holder was a good idea for a home collector and said, as long as it's putting out new roots and having green-tipped roots, it'll bloom at some point. More orchid world ambiguity. :) Whitecat8 Here is a link that might be useful: OHG

Corkscrew Swamp is a beautiful place to visit! The Ghost Orchid is 45 ft high in a tree, hence the telescope. It should be blooming thru the end of July - beginning of August. It's bloomed now 3 years in a row! Go to naplesnews.com for more information. I hope to be down there July 28 and hope it's still blooming then!

Third post - AJ Hicks Orchid Seedbank Project I sure do hate to sound like an ignorant git, but there's one thing for sure: P. lindenii grows like a weed in flask. Stick them on almost any kind of media, and they grow as fast as anything else I've ever seen. Not fussy at all. The only problem with them is that one must transfer them to fresh media about every 12-14 months as the flasks dehydrate. Left to get too try, the nutrients get too concentrated and they go into protocorm multiplication rather than growth. Sigma P-1056 does just fine. Now, when de-flasked... phew. That's a whole 'nother mess. About 15 years ago, I acquired two very small seedlings that had been stuck to small slabs of wood; my greenhouse at the time had almost no humidity, but they survived for over a year. Then I went off to college, and they got sold with just about everything else I could bear to part with. They weren't doing well at the time, that's for sure. There's obviously something going on in flask that isn't happening when they are deflasked. The most obvious culprit is humidity; leafless orchids being what they are, there's virtually no ability to store water. If this were the only factor, there shouldn't be a problem. However, the Okefenokee is a region that has very high humidity, along with a diurnal temperature swing that (probably) deposits dew every morning. The same way some desert plants (and many epiphytic orchids) rely upon the morning dew, perhaps this is essential for lindenii. This still doesn't solve the problem; I am sure there are growers who have acquired lindenii seedlings that perished horribly despite 100% humidity. Moreover, as this species seems to tolerate *some* dry days, along with the fact that some growers and naturalists report that this plant enjoys the occasional sunny, bright day (where the roots aren't sopping wet) may be very important. People also focus on nutrient availability. I'm not going out on a limb when I say that, growing on pond apples like they do, there's not a lot of nutrients available. Focusing on how much fertilizer we can dump on these guys is, right now, not a critical issue. However, the *availability* may be. I know nothing about pond apple, but do know that many elements are only available in limited pH ranges. I suspect that pond apple and other preferred hosts of lindenii differ in the pH of their bark. Perhaps they are more alkaline; I don't know. Anyone have anything intelligent on this? A number of people claim that mycorrhizal symbionts are important to the health of this species. I doubt this. Other species that rely strongly upon a mycorrhizal symbiont perish very quickly when their symbionts experience problems. I hate making blanket statements like this, but I don't think lindenii dies fast enough for it to be a myco problem. Moreover, allied species (such as Dendrophylax funalis, which has even been crossed with P. lindenii) show no such "requirement." This is a lame statement to make without proffering better evidence, but it's my gut feeling. Until we get evidence either way (which would require some field work by one of those symbiont pros, which won't happen any time soon), we'll probably never know. Until such time as we find a larger facility, we will be unable to experiment with the P. lindenii seedlings we have on hand. However, if I had the resources, the determination, and the time, I would recommend construction of a simple environmental chamber with the following considerations: The chamber would be constructed with an ultrasonic humidifier core (the same type as sold for terrariums) that creates the "fog" humidity. This would be on a timer set to click on for about 1/2 to 1 hour every day, right before the artificial lights kick on. Second timer kicks on to provide 12-14 hours of illumination from fluorescent tubes, approximately 8 to 14" away. Two hours after the lights kick on, a small muffin fan (the sort used to cool computers) would kick on, just long enough to dry out the surface of the bark (maybe 15-20 minutes). Cycle repeats each day. Wish I had the time. Cheers, -AJHicks Orchid Seedbank Project Fourth Post- Nicholas Plummer In 1999 or 2000, I split a flask of Mick Fournier's Dendrophylax (Polyrrhiza) lindenii with another local grower. I still have four of the plants. They are definitely the slowest growing of any orchid that I've tried, and they seem to have stalled out with roots about 3" long. At this rate, I do not think they will ever bloom. The Caribbean species like D. fawcetti and D. funalis seem to be better suited to cultivation. One person who has seen them growing in the wild told me that they typically grow fairly close to the water line, and he thinks they tend to remain constantly wet due to capillary action. Another person told me that when he has seen them, they usually seem to have the growing point against the tree trunk, so that new roots emerge underneath the older roots. My usual inclination when mounting orchids is to orient the growing tip of the stem away from the mount, but it does appear that at least a couple of my surviving plants are in the reverse orientation. Nick Fifth post- Russell Clusman is a photographer (among other things who lives in Miami) Oak Hill Gardens successfully flasks and mounts Dendrophylax lindenii (ghost orchid) of which I have seen their flowering plants at the Miami Fruit and Spice Park orchid sale and show. Greg who works at Oak Hills' greenhouse may be a good resource to consult. They mount them on cork slabs and branches and grow them in the drier end of the greenhouse where they receive a lot of light and good humidity but no overwatering. I have heard that Ron Coleman has raised and flowered a ghost at his greenhouse in Arizona so he may be another source. I spend a lot of time in the Fakahatchee Strand (FSSP) and we are in the process of data collection. The info we record is as follows: 1) type of host tree 2) height from base 3) number of live roots and condition (robust vs good vs sorry) 4) dbh -diameter of tree @ breast height 5) average water depth below specimen 6) compass orientation on tree (north,s,e,w side of tree) 7) # of old flower spikes 8) length of longest root. We have recorded well over 300 subjects and info pertinent to your email is as follows: 1) 85% are found on Popash (Fraxinus caroliniana) 2) most are 5.5-6.5 ft high on host 3) most have a 16-24 inch average annual water depth below them. We have recorded data on a small group of very young subjects and to date we have a ½" growth rate per year and not on last years growth but on the new roots that emerge. Subjectively speaking, in the Fakahatchee they are generally found on the outskirts of deeper water areas (> 24") and very rarely do we find them growing just above the waterline and it is my opinion by observation that they do not stay constantly wet but they do need high humidity. I do agree that new roots emerge from the bottom of the central hub. Successful pollination in the FSSP is infrequent and had "heard" that a plant may need at least 2 open flowers or several plants with open flowers in close proximity to produce a pod. I have attempted to grow them over the last 6 years but to date have been unsuccessful. Had one growing for 2 years but then it croaked (my fault). Russ Sixth Post- AJ Hicks, Orchid Seedbank Project At 11:49 AM 2/5/2007, you wrote: >Polyrrhiza lindenii is a native American orchid that may or may not have >been successfully cultivated beyond the flask. I have never tried. I >know Mick Fournier of HBI claims to grow them. For sometime I have seen >on the Oak Hill Gardens' website that they sell Polyrrhiza lindenii >mounted. Has anyone on this list ever bought one mounted? The story behind P. lindenii is a long and painful one. I will give only the briefest possible notes here. The species germinates and grows readily in flask. It goes on to multiply rapidly in the absence of exogenous hormones (!), producing large numbers of propagules when "fed" with fresh medium. On fresh, "hot" meduim, it will proliferate; as the medium ages, the proliferation reduces dramatically, forming larger plants with well-formed roots. As the medium ages more, the roots stop growing. If moved to fresh medium, they undergo more proliferation and growth. It is unknown if such plants can flower. When propagated to bajeezus and back, sympodial orchids in meristem culture frequently result in "mules," failing to flower. However, this can be a function of excess concentrations of applied hormones; as noted above, P. lindenii does fine without them. (This seems to be common to at least some other leafless orchids, including Dendrophylax salleii; other Vandaeae seem to do the same thing under certain circumstances, so it is consistent with both the morphology and phyllogeny of the leafless orchids- there's probably something to this, but nothing that's going to lead to a Nobel anytime soon.) As a result, it is possible to maintain P. lindenii in near-perpetual cultivation (I have some containers with plants that have been maintained for >7 years now, subcultured as needed), "laying" golden eggs, i.e.: more undifferentiated protocormic material. >I have always >wondered if the roots are actually growing on the mount showing at least >a limited time of successful cultivation outside the flask or are the >plants freshly mounted. "We got another order for Polyrrhiza lindenii. >Deflask one, mount it and ship it." Also if Polyrrhiza lindenii is not >being successfully cultivated outside the flasks, one has to wonder >where are all the seeds are coming from? So- the bit above explains the seeds. The other aspect- maintenance of plants on grapevine, i.e.: Oak Hill- is pretty straightforward. I know this as I've twice met and discussed the aspects of the plants at Oak Hill with Herman Pigors, the man who runs the show. They, too, note proliferation of maintained cultures, which were reportedly started from seed collected from plants in cultivation there at Oak Hill. They de-flask and wire to grapevine; I didn't ask as to how long they are maintained prior to sale, but one would suppose they sell fast, and are therefore not established very long. At the very least, I think it safe to say that Herman is not flying to the Florida swamps, seeking out capsule-bearing wild plants, nicking the capsules and returning to Illinois. This I would put to a distant second to the other theory, which is precisely the same as above except instead of flying, he teleports. >I think Sam's idea of having a list of native American orchid species >and their propagation status is a good one that the NOC should take up. >Maybe the conservation committee? It would help to see where we are with >ex situ conservation of native orchids and hopefully help buyers of >native American orchid species be more successful with the orchids they >purchase. As AJ, Jerry and Wayne have pointed out having orchids in ex >situ is important for increasing the knowledge base for propagation and >in general and for possible reintroduction into the wild. This is ex >situ conservation. It'd be nice to have a database, but it won't happen. 1) Propagators are too busy. 2) Propagation status is in constant flux (for an 'available plants' database). I may have Species X right now, but I may not in 6 months. Most greenhouses don't have a catalog good for more than a short period of time; propagators are even worse. 3) Propagators won't give up secrets (for a 'propagation techniques' database). I'd settle for a list of vendors for which someone with a head on their shoulders can vouch. "Been there. Saw the lab. Guy's legit." But that won't happen either as those who are denied the list would just sue and shut the thing down. Trust but verify, but damn the diggers altogether. -AJHicks Chandler, AZ The End Thanks Calvin for the tip.