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Date: Wed, 15 May 1996 15:10:24 -0400 From: AusOrchids@aol.com Subject: [8657] Re. Sarcochilus culture query
Dear Nina & Willis,
I currently have about 200 multiple growth Sarcochilus (species and hybrids) in full bloom plus many, many other smaller ones in bloom. I guess you could say that I have had a good degrees of success in their culture.
The genus Sarcochilus ( those native to Australia) contains 15 described species that are found ranging from the far south (very cold climate) to the far north (tropical climate).
In order to give any specific cultural instructions it would be necessary to know the actual species or hybrid that you are trying to flower.
Most of the Sarcochilus offered for sale are either S. hartmannii or S. fitzgeraldii. A primary hybrid between the two, S. Fitzhart is very likely the easiest of all to grow and bloom.
Both species mentioned are lithophytes, very rarely epiphytes, that like moist, but not wet feet; a cultural requirement common to most nonpseudobulbous, rhizomeless momopodial :-) orchids.
Generally speaking, S. hartamnnii grows well for me under the same cultural conditions as utilized for cattleya and S. fitzgeraldii does well under conditions normally stipulated for Phalaenopsis. S. Fitzhart will grow well under either set of conditions and is usually easy to bloom and very floriferous.
An excellent source ( and only comprehensive tome that I know of) for information pertaining to the description and culture of all of the Australian member of the genus is "Sarcochilus orchid of Australia" by Walter T. Upton, the Sarco. guru. If anyone is interested, I still have a few signed copies of this book available.
Below is a copy of the cover page for the Sarcochilus section of my price list. Hope tht it is of some help. -------------------------------------------------------
Sarcochilus and their allied genera are extremely easy and rewarding plants to grow, They are compact plants with a monopodial growth habit. They branch freely from the base and grown rapidly into dense clumps. Each mature plant, in the clump, will produce from 2 to 5 racemes with as many as 25 flowers per raceme. A mature clump, in bloom, carries flowers that almost totally obscures the foliage. A truly magnificent sight.
As mentioned; they are, for the most part, very easy to grow. Only a few of the more exotic of the genera require any special cultural considerations (they are noted on the list). The vast majority of these plants can be grown under "Cattleya or Phalaenopsis conditions" employing the same normal cultural practices as for those genera.
I have had my greatest success utilizing shallow clay containers and a coarse grade of bark with approximately 30% of added crockage consisting of broken up old clay pots or Hydrolite. The size of the crockage closely approximates the size of the bark. In the absence of crockage, I have substituted a very coarse grade of perlite; not necessary when using the Hydrolite
The plants that are identified as being mounted are normally secured to a slab of Cork Oak bark with a small pad of spaghnum moss for moisture retention. These plants do not respond well to pot culture.
NOTE: Sarcochilus are, as mentioned previously, compact plants that grow to an average maximum height of 6". The plants offered in this listing as "blooming size" plants are usually single growth plants that are expected to bloom in season (usually spring). Some may have previously bloomed; more than once. There is no comparison that can be made between a blooming sized Cattleya and a blooming size Sarcochilus. The average size of a blooming sized Sarcochilus is approximately 3x3" and is, most often,extracted from a 2 1/4" pot or a 3" saucer that has been drilled for drainage. They are continuous growers and require no rest period. They slow down considerably in very warm weather - but they never stop. For your general information; Sarcochilus have been know to flower in the flask. My personal best is 58 days out of flask.
Multiple growth plants are usually available in many of the species and hybrids; at increased cost. You may call our 800# 582-993 for availability and price.
I fertilize my Sarcochilus at every third watering with a very weak (1/8th strength) solution of a 20-20-20 water soluble formula. I have found that this gives me the best results. I have, in the past, fertilized weekly with a 1/4 strength solution and monthly with a full strength solution with no adverse effects. The weaker of the solutions and more frequent application seemed to induce more new growths, more upright racemes and a more vigorous root system.
The mounted plants are misted daily in warm weather and soaked daily in hot (90F+) weather. The potted plants are usually watered every two or three days. Species plants of Sarcochilus hartmannii and fitzgeraldii are exceptions. They should not be allowed to approach drying out. They need to be grown damp. Observation of the leaves of Sarcochilus will alert you to under-watering practices. They shrivel !!! Sarcochilus ceciliae should be kept on the dry side and give plenty of light. An absence of water encourages the root growth that is necessary for the development of this species. Again; watch the leaves to ensure that the plant does not excessively dehydrate.
Proper pronunciation of this genera is given by Hawkes in his "Encyclopaedia of Cultivated Orchids" as follows:
Sarcochilus (sar - kok - i - lus). His spelling break down is obviously Sar - coch - i - lus.
The pronunciation that he advocates makes more sense phonetically spelled this way (sar - coke - eee - loose).
but (sar - ko - key - lus) or ( sar - ko - kai - lus ) never !! - according to Hawkes.
However; "to each his own" ! When you call to order - say it the way you want. It is to my advantage to understand!!
The Australians have simplified the problem - they call them Sarcs and everyone knows what they are talking about.
Most American growers usually refer to these plants as Sarcos. ------------------------------------------------------
Date: Thu, 16 May 1996 02:20:46 -0400 From: Tuskes@aol.com Subject: [8669] Sarcochilus Culture in So. Calif.
Regarding Sarcochilus. Cultural techniques that produce great results can be quite variable for the same species. We live close to the coast in San Diego, about half way (north\south) between George Kenner and Bruce Hubbard. Winter night lows are 40s-50s with 65-75 days. Summer nights are 63-65 with 72-78 days. Humidity is usually 30-45% RH (day), but record 5-10% RH a number of times a year. We receive 3 to 12" of rain per year. Coastal clouds which often fail to reach George or Bruce keep our temperatures comfortable.
I had a difficult time blooming fitzgeraldii, hartmannii, and hillii in the greenhouse. Once they were moved outside, even small plants bloom. Most are in plastic pots with a fine fir bark/charcoal/perlite mix. They are water once a week with DI. Compared to George I under pot the plants.
The hillii and olivaceus are mounted and misted infrequently during the winter. Once they set their "spike" they are moved into the greenhouse and misted once a day and kept under Cattleya condition. I think George keeps his olivaceus in the greenhouse (his look and bloom better than mine).
The spathulatus, roseus, and ceciliae are mounted and kept in the greenhouse, all of which are good bloomers. I know ceciliae lives on rocks and many people grow them in shallow trays. But for our conditions they do great mounted. The plants never look dry, are strong bloomers, put out lots of pups, and have good long roots that hang in the air. It has been easy to grow as an epiphyte.
I agree with Harry Tolen, I was over a George's last week taking photos for an artical on this group... he has some outstanding species and hybrids.
Paul Tuskes, San Diego, CA. Tuskes@aol.com
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