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#1
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potinaras, etc
I seem to have a little problem with potinaras, some slc's and Blc Oconee
and where Oconee is a direct parent. I get burning on the leaves particularly any new growth in anything less than 20% shade. I leave up 20% shade over a 20X20' section of the greenhouse during winter. That section increases to 60% in mid-summer, some gets 40% and the rest is 20% at that time. Most of my catts get full light in the morning and 20% shade from noon on at this time of year. Most species are in full sun. As I increase shade the above mentionned hybrids seem to have less problem with leaf burn. I live below 33o latitude in the southern US where the sun is strong even at this time of the year. I guess my main question is: Are these hybrids that sun sensitive everywhere? Should I look for just that right spot or forget growing them here? Thanks for your input. Gary |
#2
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potinaras, etc
V_coerulea wrote: I seem to have a little problem with potinaras, some slc's and Blc Oconee and where Oconee is a direct parent. I get burning on the leaves particularly any new growth in anything less than 20% shade. I leave up 20% shade over a 20X20' section of the greenhouse during winter. That section increases to 60% in mid-summer, some gets 40% and the rest is 20% at that time. Most of my catts get full light in the morning and 20% shade from noon on at this time of year. Most species are in full sun. As I increase shade the above mentionned hybrids seem to have less problem with leaf burn. I live below 33o latitude in the southern US where the sun is strong even at this time of the year. I guess my main question is: Are these hybrids that sun sensitive everywhere? Should I look for just that right spot or forget growing them here? Thanks for your input. Gary Look for the right spot. If you are growing in a greenhouse during the summer, remember that the roof will filter 10% or more of the light. Adding a 60% shade cloth will reduce the available light to only about 30%. If you increase the light intensity during the summer (reduce the shade density) and match the orientation of the plant, you should actually need very little shade during the winter. I have a translucent insulation in the roof, but no shade on the windows for my catt hybrids during the winter in Missouri. I move mine outside the first week of May. The sun starts out with a more southerly orientation, and lower in the sky. By midsummer it gets intense. While they are under trees, they get no shade until after 10 a.m. in midsummer, some don't get any shade for another hour. They are shaded by the trees for 3 to 4 hours, then get afternoon sun. When they are acclimated to the higher light levels, they don't burn, unless I change their orientation to the sun or move a plant that may be shading a portion of the leaf (bikini burn). I will tell you, it is not easy to acclimate a mature plant to those conditions. Most of my plants were purchased as small seedlings and have always lived under bright condition. Their growth is lighter and firmer than most mature plants I have purchased. Hybrids bought as mature plants will sunburn and bear careful watching. I put them on the most protected end of the tables. When the new growth develops under brighter light, they handle the increased intensity much better than the old growth. But they may look rough for 2 or 3 years, while the plant is growing under the brighter light. Not sure where "here" is exactly in your case. The intensity of the sunlight will vary with the altitude, humidity, and cloud cover. Happy growing, Nancy |
#3
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potinaras, etc
On Sat, 2 Dec 2006 07:57:57 -0500, "V_coerulea"
wrote: I seem to have a little problem with potinaras, some slc's and Blc Oconee and where Oconee is a direct parent. I get burning on the leaves particularly any new growth in anything less than 20% shade. I leave up 20% shade over a 20X20' section of the greenhouse during winter. That section increases to 60% in mid-summer, some gets 40% and the rest is 20% at that time. Most of my catts get full light in the morning and 20% shade from noon on at this time of year. Most species are in full sun. As I increase shade the above mentionned hybrids seem to have less problem with leaf burn. I live below 33o latitude in the southern US where the sun is strong even at this time of the year. I guess my main question is: Are these hybrids that sun sensitive everywhere? Should I look for just that right spot or forget growing them here? Thanks for your input. Gary If the leaves are not getting hot to the touch - you could be contributing to the sunburn by not feeding enough to balance the increased light. This is a triangle that needs to balance = food, water and light. SuE http://orchids.legolas.org/gallery/orchids |
#4
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potinaras, etc
Thanks for the notes Nancy and Sue. I should have also mentionned that I
grow these alongside catts, other blc's, lc's, laelias, etc that have no problems. I'm wondering if there is some specific thing I may be doing wrong with the slc's, pots and Oconee hybrids. Do they need cooler temps than other blcs or catts? more shade? less fertilizer? Of course, I just had a Blc Oconee 'Mendenhall' X Slc Ruffles 'Crimson Glory' hybrid just come into bloom with no problems on the blooms or growth! Wouldn't you know, just when I thought maybe I might be on to something (I'll post a pic over on abpo as soon as I get to it). Anyway, if something else occurs to you along these lines that might be helpful, I'd appreciate your input. Thanks Gary "V_coerulea" wrote in message .. . I seem to have a little problem with potinaras, some slc's and Blc Oconee and where Oconee is a direct parent. I get burning on the leaves particularly any new growth in anything less than 20% shade. I leave up 20% shade over a 20X20' section of the greenhouse during winter. That section increases to 60% in mid-summer, some gets 40% and the rest is 20% at that time. Most of my catts get full light in the morning and 20% shade from noon on at this time of year. Most species are in full sun. As I increase shade the above mentionned hybrids seem to have less problem with leaf burn. I live below 33o latitude in the southern US where the sun is strong even at this time of the year. I guess my main question is: Are these hybrids that sun sensitive everywhere? Should I look for just that right spot or forget growing them here? Thanks for your input. Gary |
#5
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potinaras, etc
V_coerulea wrote: Thanks for the notes Nancy and Sue. I should have also mentionned that I grow these alongside catts, other blc's, lc's, laelias, etc that have no problems. I'm wondering if there is some specific thing I may be doing wrong with the slc's, pots and Oconee hybrids. Do they need cooler temps than other blcs or catts? more shade? less fertilizer? Hybrids can get really interesting. It looks like a catt and blooms like a catt, but it secretly wants to herd sheep. Some want to rest at a different time of year or under different conditions, grow with the pseudobulbs and leaves horizontal, or just be "different". Potinara add sophronitis into the mix, and they grow in higher altitude with more humidity, even though the research indicates they grow in bright conditions. Maybe a cool mist or wet wall during the summer... I have 2 sibs of the same cross (puchased from C&H, so probably similar or same as yours) currently in bloom. While the blooms are similar in shape the color is more intense on one. One will grow upright, the other wants to lay out and won't bloom until it gets over the edge of the pot and can sag down and spread out. Naturally, the more attractive bloom (my opinion) is the one that wants to grow over the side and tip over or take up 10X as much room on the table. When I transplant this spring it will go to a basket lined with a coco mat, either planted in with mix or mounted on with it hanging like a bell. I nearly killed one of my catt hybrids when I divided it and tried to force it to conform to upright growth. It had been happily growing in a hanging 4" clay pot. It was nearly 4' in diameter leaf tip to leaf tip. Probably waited too long, but I divided it, put it in a bigger pot with fresh mix, staked and clipped. If orchids could talk, I don't even want to know what profanity it was using on me. Lost one of the divisions altogether and was losing the other. I finally gave up and removed the stake. The ingrate is growing again, but I set it back a couple of years. Not much help, Nancy |
#6
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potinaras, etc
Hybrids can get really interesting. It looks like a catt and blooms like
a catt, but it secretly wants to herd sheep. ROFLMAO! I needed a good chuckle, and that did it. Diana |
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