Phal Sweet Memory Liodoro: winter or summer bloomer?
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.

Phal Sweet Memory Liodoro: winter or summer bloomer?
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #21  
Old 01-17-2021, 03:51 AM
SouthPark's Avatar
SouthPark SouthPark is offline
Senior Member
 

Join Date: Dec 2018
Member of:AOS
Location: Australia, North Queensland
Posts: 3,787
Default

My two mini phals (hybrids) here in the tropics are not stopping ----- with the flowers that is.

The old flowers are still on, while it is continuously producing new buds on the same spike, and the new buds keep opening.

It's like a never-ending story - at least for the moment - which is nice.

The relatively long lasting life of flowers from various phals out there is impressive. That's one of the strong points.

Quote:
Originally Posted by chicken_wing View Post
Now it's recovering and producing a new leaf and new roots - even if we have poor day light due to the cloudy winter.
That's a very good sign ----- as in new leaf and new roots. Given time - it will eventually flower again.


Last edited by SouthPark; 01-17-2021 at 11:00 AM..
Reply With Quote
  #22  
Old 01-18-2021, 04:17 AM
camille1585's Avatar
camille1585 camille1585 is offline
Administrator
 

Join Date: Oct 2007
Location: middle of the Netherlands
Posts: 12,634
Default

Quote:
Originally Posted by Orchidtinkerer View Post
I am more interested in what makes phals tick at the moment. This might be coincidence but all 8 phals that are blooming here at the moment were given 8 hours light/rest over christmas. The 15 phals I decided to give 12 hours of light all through winter are all doing nothing, every single one! Which is not what I was expecting at all.
Coincidence? Not sure.

As to it being fact that some species are triggered by the cold, I would say that is based on old facts, it was once fact that the earth was flat, doesn't mean it actually is, I haven't got enough evidence yet but it surprises me as there are growers that have been growing decades longer than me and there should be more evidence!

It is fact that commercial phal growers keep temps above 28 degrees to inhibit flowering. When they want them to flower they lower temperatures - this enables flowering. There is a big difference between enabling flowering and triggering flowering though so it is complicated but the only reason this would then be interpreted as in temperatures trigger flowering is if if was observed in nature, as temperatures drop, the ones that flower do so. But why does the temperature drop? Because daylight hours reduce. So if both happen at the same time you could decide it is the temps but it could just as well be the light hours reducing which in turn reduces temps and there would be no way of proving it one way or the other without trying different conditions one year after the next. ie cold rest + supplemental light, no cold + light, cold with no light and warm with no lights. And with several different orchids.

A cold drop at night improves flowering for every orchid so I can completely understand why it is thought to be so but I don't just want to have an asnwer for the sake of it, I want the right answer so that I get better results.

Could I have gotten the 15 phals I gave 12 hours of light over winter (using electricity I might add) to flower? Most likely yes but I will have to wait till next year to try something different again.
Sounds like a nice experiment you have going. Do you mean that the plants that recieved short days over christmas are now showing spikes? I wonder if it is due to your light treatment though, since spike induction usually takes 4-6 weeks. Another thing is that it has been pretty well researched that when it comes to bloom induction, the majority of Phals are temperature sensitive, and that photoperiod plays no role. This topic has been of interest for commercial growers because maintaining greenhouse temps over 28°C is really expensive, and if playing with short and long daylength (far cheaper) were the solution, it would be used.

Why is there no photoperiod sensitivitiy? Because most Phal species originate from areas close to the equator, and daylength doesn't vary much. There are exceptions to this of course, and one example is Doritis (now Phal) pulcherrima (a spring/summer bloomer) which has been found to be photoperiod sensitive. However research showed that spiking in this species is triggered by lengthening daylength and not by shortening it.

As to your results with short versus normal daylength, it may very well be that by turning off the lights earlier, the plants experienced a slightly lower average temperature than the other set of plants. Iradiance from light fixtures will raise the temperature at leaf level somewhat, and it can sometimes have stronger effects than anticipated! (As I discovered last year in one of my experiments at work...)
__________________
Camille

Completely orchid obsessed and loving every minute of it....

My Orchid Photos
Reply With Quote
  #23  
Old 01-18-2021, 05:56 AM
chicken_wing chicken_wing is offline
Jr. Member
 

Join Date: Jan 2021
Location: Rome
Posts: 9
Phal Sweet Memory Liodoro: winter or summer bloomer? Female
Default

my experience is that whenever we have cold temperatures... I have flowers. no matter how many hours of light my phals may receive.

For example.... Last year we had a chilly may. It was unusually cold.... and even if in may the days are plenty of light my phals decided to flower. This happened to all my phals.... to the point where I was a bit upset because I had to do a few repots but I hate to repot during the blooming time!
Reply With Quote
  #24  
Old Yesterday, 06:48 PM
SouthPark's Avatar
SouthPark SouthPark is offline
Senior Member
 

Join Date: Dec 2018
Member of:AOS
Location: Australia, North Queensland
Posts: 3,787
Default

Quote:
Originally Posted by SouthPark View Post
My two mini phals (hybrids) here in the tropics are not stopping ----- with the flowers that is.

The old flowers are still on, while it is continuously producing new buds on the same spike, and the new buds keep opening.
Just attaching some pics to show what I meant ------- and it is the middle of summer right now. The mini phal appears to even be developing a new spike - apart from extending its existing spike to form more flower buds.
Attached Thumbnails
Phal Sweet Memory Liodoro: winter or summer bloomer?-phal1_20-jan2021-jpg   Phal Sweet Memory Liodoro: winter or summer bloomer?-phal2_20-jan2021-jpg   Phal Sweet Memory Liodoro: winter or summer bloomer?-phal3_20-jan2021-jpg   Phal Sweet Memory Liodoro: winter or summer bloomer?-phal4_20-jan2021-jpg  
Reply With Quote
Reply

Bookmarks

Tags
liodoro, lost, phal, roots, winter


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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
The S/H list ScottMcC Semi-Hydroponic Culture 44 11-16-2020 09:47 AM
Winter watering estación seca Beginner Discussion 12 12-07-2017 01:40 AM
Phal Sweet Memory caleb316 Hybrids 4 03-24-2016 04:34 PM
phal liodoro sweet memory? dangerouseddy Hybrids 5 08-27-2015 09:41 AM

All times are GMT -4. The time now is 09:48 PM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.