To Burn, Or Not To Burn...
Login
User Name
Password   


Registration is FREE. Click to become a member of OrchidBoard community
(You're NOT logged in)

menu menu

Sponsor
Donate Now
and become
Forum Supporter.

To Burn, Or Not To Burn...
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
Register To Burn, Or Not To Burn... Members To Burn, Or Not To Burn... To Burn, Or Not To Burn... Today's PostsTo Burn, Or Not To Burn... To Burn, Or Not To Burn... To Burn, Or Not To Burn...
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
Go Back   Orchid Board - Most Complete Orchid Forum on the web ! > >
Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 06-28-2012, 10:54 AM
hosshead hosshead is offline
Member
 

Join Date: Oct 2008
Member of:AOS YAY!!!
Location: I'm outa Ohsweken Canada :)
Posts: 81
Default To Burn, Or Not To Burn...

....that is the question!

So many orchids require HIGH light to bloom*, I've read remarks that, if you want your Ansellia to bloom, you must resign yourself to leaf burn, it requires so much direct light.

So, how much burn do we generally accept, what do we think about Ansellia and how to give enough light without severe burn?
What about catts and direct sun?
Especially at high latitudes?

Some of the finest flowering orchids I've seen had some moderate leaf burn.
Then again, many don't.
Lower latitude orchids seem to get enough light year-round that they don't need direct sun....

I'm interested in the highly respected opinions of this forum, now it's summer and my mind turns to this question every year.

*Of course, we are not talking about the shade-lovers....
Reply With Quote
  #2  
Old 06-28-2012, 11:37 AM
Magnus A Magnus A is offline
Senior Member
 

Join Date: Oct 2006
Zone: 7a
Location: Uppsala, Sweden
Age: 51
Posts: 638
Default

The statement of the Ansellia is wrong as I have seen that specie in flower without any sign of leaf burn!

And it is not the light in itself that "burn" the leaf, it is the heat that damage. Though high amount of UV light can bleach a leaf, but then they turn white and not black.

So, can you keep the leaf temperature down you can hit them with almost as much light you want!
Reply With Quote
Post Thanks / Like - 1 Likes
Likes Gage liked this post
  #3  
Old 06-28-2012, 11:39 AM
Gage Gage is offline
Senior Member
 

Join Date: Mar 2011
Zone: 10b
Location: South Florida
Posts: 1,574
To Burn, Or Not To Burn... Male
Default

Hi, Sammy! Regardless of the genera, I have a hard time believing that any orchid should require actual leaf burn in order to bloom. But in higher latitudes with short day lengths maybe that is the case. I always try to put each of my orchids in the highest light I am able to provide without burning them. However I think I remember reading on one of these threads somewhere that some orchids will refuse to bloom in higher light. I can't remember which species they were referring to, but I do believe this is the exception and not the rule.

Maybe some Canadians can chime in on this great question!
Reply With Quote
  #4  
Old 06-28-2012, 11:44 AM
Leafmite's Avatar
Leafmite Leafmite is offline
Senior Member
 

Join Date: Sep 2010
Zone: 5b
Location: Ohio
Posts: 10,953
To Burn, Or Not To Burn...
Default

Introduce them to the required light slowly and they aren't as likely to burn. Also, sometimes 'high light' for orchids is not 'high light' for other plants...usually, it isn't. Temps and whether you have a constant breeze or not can also have an impact. And, yes, the degree of protection the atmosphere gives your plants is also a consideration, as well as the angle at which the sun hits. It is fine if you get plants with red/purple coloring that need high light to bloom as that won't kill the plant and means that the orchid is getting the maximum light.
PS
light green/yellow leaves can mean too much sun for orchids, too.

Last edited by Leafmite; 06-28-2012 at 11:47 AM..
Reply With Quote
Post Thanks / Like - 1 Likes
Likes Gage liked this post
  #5  
Old 06-28-2012, 03:29 PM
Magnus A Magnus A is offline
Senior Member
 

Join Date: Oct 2006
Zone: 7a
Location: Uppsala, Sweden
Age: 51
Posts: 638
Default

Quote:
Originally Posted by Gage View Post
... However I think I remember reading on one of these threads somewhere that some orchids will refuse to bloom in higher light. I can't remember which species they were referring to, but I do believe this is the exception and not the rule.
For at least some species, there is a need for a solid dark period every night and it is easy to compensate lower artificial light levels with longer time of illumination. The plants get to short nights and have no time to recover.
You can compare it with athletes that need to rest and can not train hard for 365 days a year.
Reply With Quote
  #6  
Old 06-28-2012, 03:41 PM
Bud's Avatar
Bud Bud is offline
Senior Member
 

Join Date: Aug 2011
Zone: 7b
Location: Manhattan, NY
Age: 40
Posts: 8,411
Default

I have my Mokaras in direct sun .... I had to gradually wean them from indoors to outdoors last spring.
The direct sunlight only happen from dawn to 11am for the taller buildings shade it and brings back the sun by 5pm.
This is in the southfacing fire escape area of my apartment which is lucky for me because the sun will burn leaves from 11am to 3pm....
it is very humid and hot this time of year in Manhattan so I am scared that my buds will blast.... I would rather have my Vandacious plants get the light they need and humidity fordeveloping the leaves and roots with such great hope that the heat wont damage my flowers
Reply With Quote
  #7  
Old 06-28-2012, 04:03 PM
hosshead hosshead is offline
Member
 

Join Date: Oct 2008
Member of:AOS YAY!!!
Location: I'm outa Ohsweken Canada :)
Posts: 81
Default

And see, here is why we have OrchidBoard!

I've been a "Stan Man" for much of my orchiding life. Also very much into the Catasetinae group.

I have the typical mixed bunch of catts and dens and intergenerics....

I love the species orchids, do pretty well with things like comparettias and Osmo/Rossioglossums, coryanthes, coelogynes, phaius..... lots of shade lovers, as you can see.
This year I have gotten more interested than ever in trying some very high light plants, have acquired a large Ansellia, and a few Schomburgkias.
So, this year, I have gotten around to asking this one big question regarding high-light requirements and all about leaf burn....I'm quite motivated now!

So, thank you very much for your participation!

I just wonder what wild orchids do if they find themselves growing where there's a splash of direct light?
My dappled sun orchids,(those under trees for the summer), will get a burnt leaf-tip here or there, but they grow sturdily onward. The high light seems to really help them bloom happily. My stans are especially happy to spend the summer outside, hung high up under the orchid-porch roof,(never direct sun, unless it's by accident!), I also take the cycs and morms and catisets all out onto shaded shelves.
They get lots of the warm and humid and bright shade, no direct sun.

My Big Question is about the Catts and the Schombs and the Ansellia, then.

I think the acclimation idea sound very good, but shorter summers make it harder to accomplish.
Do we think a lattice can be advantageous with this?
Reply With Quote
  #8  
Old 06-28-2012, 04:07 PM
hosshead hosshead is offline
Member
 

Join Date: Oct 2008
Member of:AOS YAY!!!
Location: I'm outa Ohsweken Canada :)
Posts: 81
Default

p.s.
Yes, I know that the Schombs are now called Myrmecophila, it's just hard to remember to say that after years of calling them Schomburgkias.

All these naming wars!
Reply With Quote
  #9  
Old 06-28-2012, 04:19 PM
dounoharm dounoharm is offline
Senior Member
 

Join Date: Nov 2008
Zone: 9b
Location: north florida
Posts: 3,384
Default

all my big catts have yellowish leaves, they need that sun to form big strong stems of flowers! the smaller the catt tho, the easier i go wiht light..,the little bitty mini catts keep greener leaves....at least that is the deal in mhy greenhouse.....
Reply With Quote
  #10  
Old 06-29-2012, 12:29 AM
isurus79's Avatar
isurus79 isurus79 is offline
Senior Member
American Orchid Society Judge
 

Join Date: Sep 2007
Zone: 8b
Location: San Antonio, Texas
Age: 44
Posts: 10,316
Default

You would be surprised at how much sun orchids can and prefer to take. Growing in Hawaii let me buy tons of orchids for fairly inexpensive prices and experiment. I actually found that my narrow leaved Stans did very well in Cattleya light and that my Cattleyas could take full Hawaiian sun for long periods of the day and they loved it. Catasetums are similar to Catts in that they love love love bright light, so long as there is adequate moisture during active growth. I think that low levels of sunlight is the most common mistake made by orchid growers. They love bright sun!! As a Canadian ex-pat, I doubt very much that the sun up there would burn well acclimated orchids of just about any variety. I'm here in Central Texas and my Clow. Rebecca Tyson Northen, Catt. walkeriana and Catt. nobiliors are outside getting full late day sun (130-6PM) in 95-100+ degree weather and growing like mad!! Just introduce them slowly to natural sun light and you will notice great growth and even better blooms!!
__________________
Stephen Van Kampen-Lewis

Pics on Flickr

Instagram

YouTube
Reply With Quote
Reply

Bookmarks

Tags
burn, direct, light, orchids, sun


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help! Money to burn :) Eyebabe Advanced Discussion 5 01-27-2011 06:36 PM
Dendrobium Nobile curious burn Syrinth Beginner Discussion 17 03-29-2010 01:05 PM
Leaf Burn under T8's? josterha Growing Under Lights 9 08-23-2009 05:24 PM
What does fertilizer burn look like? quietmorning Beginner Discussion 1 06-27-2009 09:02 PM
Dendrobium Speciosum with burn marks on leaves. DennisKennedy Beginner Discussion 9 12-04-2007 05:13 AM

All times are GMT -4. The time now is 12:37 PM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.