Home |
Search |
Today's Posts |
#1
![]() |
|||
|
|||
![]()
After a week growing orchids outside in Napa, I noticed that some of
the orchids were developing straw-colored patches that kind of the same color as ripe corn. Are they burn patches, where the part of the plant may have had some direct sun-exposure? Will the plants recover? (I've moved them back inside where temperatures don't fluctuate as much. I noticed that the temperatures have a 30 degree range outside. ranging from 60's to 90's.) Any ideas on how I can resuscitate the orchids will be greatly appreciated. Thanks in advance. Lil |
#2
![]() |
|||
|
|||
![]()
Definitely sounds like burning, but the temperature, per se, isn't the
issue, and it's certainly not the day-night fluctuation in ambient temperatures. What is likely to have happened is that they received too much direct sunlight for the types of orchids they are, or were not properly transitioned into a brighter environment from one that what less so - probably a combination of the two. The result is that you get localized overheating due to the solar energy, with the ambient temperature being a relatively minor, but contributing factor. The damaged tissue will not recover, but now that your plants are no longer in such conditions, they ought to grow normally and will eventually lose the damaged leaves. I recommend that you do not attempt to remove the damaged tissue, as the patches are not open wounds, so do not provide a path to allow pathogens in. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! .. . . . . . . . . . . "Lil" wrote in message om... After a week growing orchids outside in Napa, I noticed that some of the orchids were developing straw-colored patches that kind of the same color as ripe corn. Are they burn patches, where the part of the plant may have had some direct sun-exposure? Will the plants recover? (I've moved them back inside where temperatures don't fluctuate as much. I noticed that the temperatures have a 30 degree range outside. ranging from 60's to 90's.) Any ideas on how I can resuscitate the orchids will be greatly appreciated. Thanks in advance. Lil |
#3
![]() |
|||
|
|||
![]()
whoops-same situation on a catt leaf. the leaf was turning yellow after a
black spot. I cut off the burnt leave- treated cut with physan. "Ray" wrote in message ... Definitely sounds like burning, but the temperature, per se, isn't the issue, and it's certainly not the day-night fluctuation in ambient temperatures. What is likely to have happened is that they received too much direct sunlight for the types of orchids they are, or were not properly transitioned into a brighter environment from one that what less so - probably a combination of the two. The result is that you get localized overheating due to the solar energy, with the ambient temperature being a relatively minor, but contributing factor. The damaged tissue will not recover, but now that your plants are no longer in such conditions, they ought to grow normally and will eventually lose the damaged leaves. I recommend that you do not attempt to remove the damaged tissue, as the patches are not open wounds, so do not provide a path to allow pathogens in. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! . . . . . . . . . . . "Lil" wrote in message om... After a week growing orchids outside in Napa, I noticed that some of the orchids were developing straw-colored patches that kind of the same color as ripe corn. Are they burn patches, where the part of the plant may have had some direct sun-exposure? Will the plants recover? (I've moved them back inside where temperatures don't fluctuate as much. I noticed that the temperatures have a 30 degree range outside. ranging from 60's to 90's.) Any ideas on how I can resuscitate the orchids will be greatly appreciated. Thanks in advance. Lil |
#4
![]() |
|||
|
|||
![]()
Interesting. I don't cut off the dried portion because any undamaged green
portion of teh leaf beyond it still will photosynthesize and make food for the plant, which still transports through or around the dried portion, so IMHO the dried spot is ugly but maintaining the leaf is beneficial for the plant. This is speaking of sun damage only. Not bacterial rot. K Barrett "Diane Mancino" wrote in message ... whoops-same situation on a catt leaf. the leaf was turning yellow after a black spot. I cut off the burnt leave- treated cut with physan. "Ray" wrote in message ... Definitely sounds like burning, but the temperature, per se, isn't the issue, and it's certainly not the day-night fluctuation in ambient temperatures. What is likely to have happened is that they received too much direct sunlight for the types of orchids they are, or were not properly transitioned into a brighter environment from one that what less so - probably a combination of the two. The result is that you get localized overheating due to the solar energy, with the ambient temperature being a relatively minor, but contributing factor. The damaged tissue will not recover, but now that your plants are no longer in such conditions, they ought to grow normally and will eventually lose the damaged leaves. I recommend that you do not attempt to remove the damaged tissue, as the patches are not open wounds, so do not provide a path to allow pathogens in. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! . . . . . . . . . . . "Lil" wrote in message om... After a week growing orchids outside in Napa, I noticed that some of the orchids were developing straw-colored patches that kind of the same color as ripe corn. Are they burn patches, where the part of the plant may have had some direct sun-exposure? Will the plants recover? (I've moved them back inside where temperatures don't fluctuate as much. I noticed that the temperatures have a 30 degree range outside. ranging from 60's to 90's.) Any ideas on how I can resuscitate the orchids will be greatly appreciated. Thanks in advance. Lil |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
grow shelf or mini-greenhouse for growing orchids outside in Napa valley? | Orchids | |||
grow shelf or mini-greenhouse for growing orchids outside in Napa valley? | Orchids | |||
grow shelf or mini-greenhouse for growing orchids outside in Napa valley? | Gardening | |||
Proposal to log trees burned in Biscuit fire faces criticism | alt.forestry | |||
burned leaf tips on a Catt | Orchids |