Cattleya Heathii and LED lighting
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.

Cattleya Heathii and LED lighting
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
Register Cattleya Heathii and LED lighting Members Cattleya Heathii and LED lighting Cattleya Heathii and LED lighting Today's PostsCattleya Heathii and LED lighting Cattleya Heathii and LED lighting Cattleya Heathii and LED lighting
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 11-14-2015, 01:54 PM
terryros terryros is offline
Senior Member
 

Join Date: Feb 2008
Zone: 4a
Location: Minneapolis, MN
Posts: 268
Cattleya Heathii and LED lighting Male
Default Cattleya Heathii and LED lighting

This is Cattleya Heathii, a primary hybrid of C. loddigesii and C. walkeriana, two Brazilian species that naturally grow close enough together that their natural hybrid was also discovered and called Cattleya x dolosa. Cattleya Heathii was registered in 1907 by Heath.

C. walkeriana is a compact species with the unique trait of blooming from a separate growth from the rhizome while C. loddigessii grows about a foot tall and blooms from the apex of the pseudobulb like almost all other Cattleyas. Most Cattleya Heathii, including this one, resemble loddigessii in growth habit and bloom from the apex of the pseudobulb.

Depending on the varieties of walkeriana and loddigessii used, Heathii can vary from white to darker pink/purple. The bud development of this plant during the last month occurred with day temperatures averaging about 68 F with night temperatures of 58 F. There is only faint, pleasant fragrance with this bloom, unlike the two C. walkerianas that I have bloomed that have had stronger fragrance in the morning.

This plant was purchased from Orchids Limited about a year ago and was transferred immediately to a Rand Air Cone pot in a mix that was about 50% GrowStone and 50% milled sphagnum moss. It was grown exclusively under ALT PAR 30, 15 watt natural white LEDs with 60 degree lenses. The bulbs are listed as producing about 1050 lumens each and are about 14 inches over the top of the leaves. Using an Apogee hand-held PAR meter, 150 micromoles/m2/sec were delivered to the top of the leaves. Using a lux/footcandle meter the light intensity measures about 1,500-1,600 footcandles.

The plant received peak day length of 14 hours in the summer and the sheathless spike appeared in about September as the day length in the plant room was gradually shortening to a low this last month of 11 hours. This amount of PAR would not traditionally have been thought of as high, but the blooming growth was bifoliate with purple coloration in the proximal leaves, compared to the previous five growths on the plant that were unifolate and uniformly green, indicating very good light for this new growth.
Attached Thumbnails
Cattleya Heathii and LED lighting-heathii_med-jpg  
Reply With Quote
Post Thanks / Like - 4 Likes
Likes Nexogen, DeaC, No-Pro-mwa, dshallpost liked this post
  #2  
Old 11-14-2015, 08:20 PM
WhiteRabbit WhiteRabbit is offline
Senior Member
 

Join Date: May 2008
Zone: 9a
Location: Nor Cal
Posts: 26,634
Default

Gorgeous!
Reply With Quote
  #3  
Old 11-14-2015, 10:45 PM
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

Nice! Too bad the walkeriana scent has faded.
__________________
Stephen Van Kampen-Lewis

Pics on Flickr

Instagram

YouTube
Reply With Quote
  #4  
Old 11-14-2015, 11:54 PM
samfish samfish is offline
Member
 

Join Date: Aug 2015
Posts: 64
Cattleya Heathii and LED lighting
Default

Neat... Amazing that what doesnt seem like high light relative to sunlight, gives purplish leaves under LED's.

Good datapoint to have, regarding growing under lights!
Reply With Quote
  #5  
Old 11-15-2015, 08:47 AM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Member of:AOS
Location: Oak Island NC
Posts: 15,204
Cattleya Heathii and LED lighting Male
Default Cattleya Heathii and LED lighting

Apparently the development in leaf pigmentation is a function of the volume of light received, not necessarily the instantaneous intensity.

1500-1600 fc continuously, provides roughy the same amount as natural sunlight shaded to 3000-3200 fc at the peak.
__________________
Ray Barkalow, Orchid Iconoclast
FIRSTRAYS.COM
Try Kelpak - you won't be sorry!
Reply With Quote
Post Thanks / Like - 2 Likes
Likes isurus79, samfish liked this post
  #6  
Old 11-15-2015, 03:35 PM
terryros terryros is offline
Senior Member
 

Join Date: Feb 2008
Zone: 4a
Location: Minneapolis, MN
Posts: 268
Cattleya Heathii and LED lighting Male
Default

Yes, Ray. You and some others have nicely demonstrated that 1/2 the peak light intensity we traditionally think of for orchids but delivered continuously can get the job done. We also don't need to prolong day length much at all. Thus, I am going to run 13.5 hours over the summer and I go to an 11 hour day late fall (with associated cooler temperatures) to vernalize plants that need it. I phase up and down from these extremes for fall and spring. These extremes will cover almost any type of orchid that we grow.

The question that Jerry Fischer and I had at the very beginning of the LED experience was whether we could bloom high light plants and we are now comfortable that we can. With current LEDs we don't even need to be particularly close to the bulbs so we have plenty of head room for bud/bloom development and easy care of the plants.

In some of the traditional literature people talked about 150 micromoles/m2/sec of PAR as being good for some Phalaenopsis. My experience with the LED lights with focusing lenses suggests that I need much less than this measured amount. Most of my Phals are growing and spiking right now with 50 micromoles/m2/sec at the top of the leaves. My Phrags are growing and blooming well with about 70-80 micromoles/m2/sec. It is no problem getting 125-200 micromoles/m2/sec for all of my high light plants.


Sent from my iPad using Tapatalk HD

Last edited by terryros; 11-15-2015 at 07:16 PM..
Reply With Quote
Post Thanks / Like - 2 Likes
Likes samfish, dshallpost liked this post
  #7  
Old 11-15-2015, 06:12 PM
No-Pro-mwa No-Pro-mwa is offline
Senior Member
 

Join Date: Jul 2013
Zone: 4a
Location: Wyoming
Posts: 8,344
Cattleya Heathii and LED lighting Female
Default

Good job. It's beautiful.
Reply With Quote
Reply

Bookmarks

Tags
heathii, cattleya, plant, growth, leaves, day, loddigessii, walkeriana, par, fragrance, species, temperatures, hybrid, blooming, apex, top, hours, length, bloom, natural, 50%, light, month, white, meter


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


All times are GMT -4. The time now is 09:35 AM.

© 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.