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#1
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Is Grammatophyllum scriptum deciduous?
I acquired an out-of-bloom (6 pseudobulbs, 6" pot) Grammatophyllum
scriptum in December when Franks Nurseries went bankrupt. I repotted it into semi-hydroponics at that time. Several weeks ago leaves began suddenly turning yellow and dropping within a period of days. It has now lost more than 3/4 of its leaves, and I suspect the few remaining will soon turn yellow and drop as well. Although Grammatophyllum is a member of the Cymbidium Alliance, its general form and roots seemed similar enough to the Oncidium Alliance which I have very successfully grown in s/h that I hoped it would also enjoy that culture. Its roots still look white and firm. So, if there are any Grammatophyllum experts in this group, is the leaf loss normal or am I killing this plant? Thanks! John |
#2
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John,
Grammatophyllums are not deciduous, but need very warm, very humid conditions, or they will blow their leaves and not thrive. They seem to do fine in S/H culture, if the other criteria are met. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Artwork, Books and Lots of Free Info! "John DeGood" wrote in message ... I acquired an out-of-bloom (6 pseudobulbs, 6" pot) Grammatophyllum scriptum in December when Franks Nurseries went bankrupt. I repotted it into semi-hydroponics at that time. Several weeks ago leaves began suddenly turning yellow and dropping within a period of days. It has now lost more than 3/4 of its leaves, and I suspect the few remaining will soon turn yellow and drop as well. Although Grammatophyllum is a member of the Cymbidium Alliance, its general form and roots seemed similar enough to the Oncidium Alliance which I have very successfully grown in s/h that I hoped it would also enjoy that culture. Its roots still look white and firm. So, if there are any Grammatophyllum experts in this group, is the leaf loss normal or am I killing this plant? Thanks! John |
#3
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Hi John,
I don't know of any Grammatophyllums that are deciduous. Just don't allow temps to drop below 65 and you will be better off. I have several different specious and have been growing these for about 10 years. They like indirect light and water; however, too much water may lend itself to foliage droppage. .. . . Pam Everything Orchid Management System http://home.earthlink.net/~profpam/page3.html ------------------------------------- Ray wrote: John, Grammatophyllums are not deciduous, but need very warm, very humid conditions, or they will blow their leaves and not thrive. They seem to do fine in S/H culture, if the other criteria are met. |
#4
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Thanks for posting this John it reminded me that a friend gave me 3 after
they stopped blooming last summer. I'm fairly sure they also came from Franks. I never did find a good culture sheet on them so I also need a Grammatophyllum expert. Mine came in sphagnum,I really do not like sphagnum but these looked really happy in it so I kept them that way and yeup they still look happy. So my question is how much and how often do you feed these things. Mine did not loose their leaves and 2 of the three are now putting out new growth. I think I read somewhere that if the air stayed stagnant around them it would cause them to drop their leaves. I'm not a 100% sure of this as I have a fan that runs when the temp gets above 75 so it wouldn't be something that would have burned it's self into my memory. Waiting for the Grammatophyllum scriptum experts to speak. Dusty |
#6
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wrote in
: Grammatophyllum WOW! Great growing. I have 3 plants. they are in my greenhouse east central Missouri with lots of Cattleyas, they are planted in sphagnum moss and everything gets watered twice a week for 5 minutes using an automatic system. Temperature at night is 65 F day time temperatures can run above 80 F even with vents open in winter as I have a high solar gain. The greenhouse gets shaded by a tree in summer and with plastic lattus in spring & fall. Neither has bloomed since they where given to me but they are starting their fist new growths since I got them. I'm sure sphagnum contains very few nutrients and I'm wondering what fertilizer to use. I currently use the OTC stuff that every Tom, Dick and Harry store carries which seems to work well with Cattleyas but I only feed them once a month. I've used Google to try to find culture sheets but so far I've only found pay sights with Grammatophyllum information. Thanks for the reply Dusty |
#7
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We are just starting to grow these, so we don't have a long track record ...
someone who's been growing them longer might have better advice. But based on about one year's experience: I don't think they are truly deciduous, but they do seem to be very prone to leaf-drop at any hint of stess. E.g., we had a lot of leaf-drop right after they came in, then it calmed down. ttyl, Kenni wrote in message .. . I am no expert but have 5 gram's all different...have them all in expanded clay, watered twice ,about 15 minutes apart for 15 minutes twice a week, depending on the weather...live in south florida...they are inside a screened in pool.and get sun from about 8 am till sundown. 4 of the plants are blooming like crazy..one of them gas 9 spikes full of flowers and buds..if you want pictures let me know "dusty" wrote in message ... Thanks for posting this John it reminded me that a friend gave me 3 after they stopped blooming last summer. I'm fairly sure they also came from Franks. I never did find a good culture sheet on them so I also need a Grammatophyllum expert. Mine came in sphagnum,I really do not like sphagnum but these looked really happy in it so I kept them that way and yeup they still look happy. So my question is how much and how often do you feed these things. Mine did not loose their leaves and 2 of the three are now putting out new growth. I think I read somewhere that if the air stayed stagnant around them it would cause them to drop their leaves. I'm not a 100% sure of this as I have a fan that runs when the temp gets above 75 so it wouldn't be something that would have burned it's self into my memory. Waiting for the Grammatophyllum scriptum experts to speak. Dusty |
#8
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I'm wondering if maybe you let it go too dry for a period. My Gramm scriptum
is v. citrinum 'Hihimanu' and is in bark in a 2 gallon pot and sits under the vandas where it's always getting good water. It sits right next to a 2 gallon pot of Angraecum sesquipedale 'Orchidglade II' (which is in fantastic bloom right now) and an 8" pot of Angraecum eburneum superbum. Winter night temps go down to 60 but days go to 80. It has 4 pbulbs with leaves, 1 without, and is sending out new growth. I'd venture a guess that it's the s/h. No reason other than: Good Plant + New Conditions = Bad Plant Repot the plant, put it in some warm shade until it stabilizes and/or starts new growth. Try some very dilute fertilizer and a drop of SuperThrive as long as the roots are good. Good Luck. Gary "John DeGood" wrote in message ... I acquired an out-of-bloom (6 pseudobulbs, 6" pot) Grammatophyllum scriptum in December when Franks Nurseries went bankrupt. I repotted it into semi-hydroponics at that time. Several weeks ago leaves began suddenly turning yellow and dropping within a period of days. It has now lost more than 3/4 of its leaves, and I suspect the few remaining will soon turn yellow and drop as well. Although Grammatophyllum is a member of the Cymbidium Alliance, its general form and roots seemed similar enough to the Oncidium Alliance which I have very successfully grown in s/h that I hoped it would also enjoy that culture. Its roots still look white and firm. So, if there are any Grammatophyllum experts in this group, is the leaf loss normal or am I killing this plant? Thanks! John |
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