Shop Orchid Care OrchidTalk Orchid Forum Weather Station Links Nursery

Welcome to OrchidTalk Orchid Forums


The Friendliest Orchid Community on the Internet!


  •  » Learn to Repot your Orchids
  •  » Learn Orchid Care Tips and Secrets
  •  » Find the perfect Orchid for your Growing Environment
  •  » Chat with Orchid Growing Professionals

OrchidTalk - "Bringing People Together to Grow Orchids Better!"


Let us help you grow your Orchids better; Join our community today.


YES! I want to register an account for free right now!


Register or Login now to remove this advertisement.

Page 1 of 2 12 LastLast
Results 1 to 10 of 11
Like Tree4Likes

Inducing Phal spikes w/grow lights & heat mats

This is a discussion on Inducing Phal spikes w/grow lights & heat mats within the General Orchid Culture forums, part of the Orchid Culture category; This is the start of my second year growing phalaenopsis, and my first time trying ...

Click here to increase the font size Click here to reduce the font size
  1. #1
    redphal is offline Junior Member
    Join Date
    Oct 2011
    Gender
    Female
    Posts
    8

    Default Inducing Phal spikes w/grow lights & heat mats

    This is the start of my second year growing phalaenopsis, and my first time trying to induce them to spike, rather than buying them in bloom. I have them in semi-hydro, and on seedling heat mats. I grow them under lights, one 5k and one 3k, and didn't take them outside in the summer.

    My question is, do I need to change anything to induce spiking? Will the heat mats prevent the phals from feeling cool enough for blooming, or will the general room temperature (am in NJ) be enough? Should I alter the length of time the grow lights are on per day, to mimic the sun? Should I add ice cubes, or turn off the heat mats for a few weeks?

    Sorry to bombard with questions, but there are a lot of variables and I don't want to miss out on flowers this winter! Thanks for the help.

  2. #2
    Kmac's Avatar
    Kmac is offline Senior Member
    Real Name
    Kathi
    My Grow Area
    Porch/Patio.
    Favorite Orchid(s)
    How can I pick just one???
    Join Date
    Jul 2010
    Gender
    Female
    Location
    Dallas, TX
    Posts
    2,515
    Member's Country Flag

    Default

    I've not tried using heat mats, so I can't help there. But YES, change lights to mimic the natural day length. Many orchids are triggered to bloom by day length, and/or by the drop from daytime to nightime temps. My phals grow indoors, so they don't get that much temp variance, but the light change seems to do it for them.

    Good luck!

  3. #3
    redphal is offline Junior Member
    Join Date
    Oct 2011
    Gender
    Female
    Posts
    8

    Default

    Quote Originally Posted by Kmac View Post
    I've not tried using heat mats, so I can't help there. But YES, change lights to mimic the natural day length. Many orchids are triggered to bloom by day length, and/or by the drop from daytime to nightime temps. My phals grow indoors, so they don't get that much temp variance, but the light change seems to do it for them.

    Good luck!
    Huh, interesting. I've heard the reverse, that phals, unlike other orchids, aren't sensitive to light changes. But if it works for you, it's worth a try! After the drop in lighting for a few weeks, do you go back to a longer light time?

  4. #4
    opaline's Avatar
    opaline is offline Senior Member
    Real Name
    Matt
    My Grow Area
    Sunroom
    Favorite Orchid(s)
    Catasetinae
    Join Date
    Jul 2011
    Gender
    Male
    Location
    England, UK
    Posts
    830
    Member's Country Flag

    Default

    Hi RedPhal. With my phals and most other orchids except those that are specifically placed in situ for higher and year round temp are subjected to nov,dec,jan without 3 of the 4 heatmats under the 4 plastic trays filled with bark and moss, they get no fertilizer at all, general feed or bloom feed and get sprayed alternate days only as opposed to a good daily soaking in grow time. All my plants are mounted though from chids to bromeliads and from epiphyllums to nepenthes. I dont use artificial lighting as they all face east with an hour average of a bit of southern east sun. Also i in mid england uk so they automatically get reduction in day light.

  5. #5
    Alice is offline Junior Member
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Phals and Paphs
    Join Date
    Jan 2009
    Location
    Ukraine
    Posts
    16
    Member's Country Flag

    Default

    I think that the room temperature should be enough for most of the phals. I believe though that there`s a few species which require lower winter temperatures.
    Most of my phalaenopsis begin to grow spikes after the the temperature drop(to 66-72) with sufficient light.

  6. #6
    Teena's Avatar
    Teena is offline Senior Member
    Real Name
    Martha
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    can't choose
    Join Date
    May 2011
    Gender
    Female
    Location
    No. of Boston, MA USA
    Posts
    578
    Member's Country Flag

    Default

    I don't do anything special at all. West facing windowsill in the winter, out on the deck in the summer. Winter house temps are set to a low of 52 at night and high of 65 in the daytime, oil heat costs so we all live in a cool environment. Summer they get early morning direct sun and then shade for the rest of the day. They all finished blooming between April and May and are now in full bloom again after their summer vacation outdoors. It seems my phals are ignoring all the rules for blooming or their DNA was set in the southern hemisphere and they are going to start blooming every October no matter what the conditions are.

    martha

  7. #7
    redphal is offline Junior Member
    Join Date
    Oct 2011
    Gender
    Female
    Posts
    8

    Default Getting there with phals

    I've been doing more research on phal spiking, and here's what I've learned:

    1. First rule is that the phal has to be healthy enough to spike. Apparently a lot of phals bought are previously forced, which stresses the phal enough that they will skip the next year of spiking. Not to mention the root damage that hard-packed sphag does! So it's actually likely that a first time attempt at respiking will fail, but the second year the phal should be OK, assuming it's been repotted and the roots had TLC.

    2. Light management is mostly used by commercial growers for said forcing, and as long as artificial light isn't hugely different from day length, no change is required for the home grower.

    3. Normal room conditions of temperature and humidity in temperate climates are also sufficient to signal the season change. It's only phals in tropical areas or greenhouses where the grower has to actively cool the phal.

    So, in summary: A healthy phal that isn't stressed, and is in a temperate climate with either sun or grow lights, will pretty much spike on its own. If you're in a warmer climate, you might need to put the phal somewhere cooler for a few weeks, but otherwise that should do it.

  8. #8
    redphal is offline Junior Member
    Join Date
    Oct 2011
    Gender
    Female
    Posts
    8

    Default

    Just wanted to update this with the news that I'm now getting a *ton* of spikes on my phals. I'm very pleased and it looks like almost every single one of the plants is going to bloom! Every week I see more popping out. I didn't make any changes to light or temp apart from the average house temp.

  9. #9
    bechinolina is offline Senior Member
    Join Date
    Oct 2011
    Gender
    Male
    Posts
    630

    Default

    you have to drop temperature around 15-16°c at night for 3-4 weeks. this will induce spiking for most hybrids.
    spikes that are raised under cooler temps and less light will produces bigger flowers but of course need more time.

    about species it's a bit different as some phal can spike all year round, some need a "dry" period, lower temp, less light...

  10. #10
    redphal is offline Junior Member
    Join Date
    Oct 2011
    Gender
    Female
    Posts
    8

    Default

    That ties into what I said in #3 above. House temps now that the weather is cooler are a low of 60-62F at night. Again, in temperate regions like the Northeast US, that will happen naturally.

    However, I do have all my phals on heat mats, so I wasn't sure how that would factor in. Clearly it hasn't interfered!

    BTW, all of my phals are hybrids. They are all sorts, but the ones that have spiked over the past month are:
    Two NOIDs
    Phal. Sogo Rose 'Sogo F-987'
    Dtps. Chian Xen Naumon
    Dtps. Chingruey's Goldstaff 'Fortune'
    Dtps. Ever Spring Fair
    Dtps. Fusheng Pink Pearl
    Dtps. Jiuhbao Red Rose
    Dtps. Sogo Chabstic 'Vini Harlequin' (actually spiked in Sept, just opened its buds)
    Phal. Ai Gold 'Rose Glow'
    Phal. Cat's Paw Firebird 'Montclair'
    Phal. Desert Dreams 'Mahalo'
    Phal. Fortune Buddha X Lawless Rigoletto 'Brennan's Orchids'
    Phal. I-Hsin Spot Eagle 'Montclair'
    Phal. Ming-Hsing Yellow Boy 'Montclair'

    So as you can see, quite a cross-section of hybrids!

Page 1 of 2 12 LastLast

Similar Threads

  1. New to Grow Lights
    By jrfehon in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 5
    Last Post: November 28th, 2010, 11:20 AM
  2. Incandescent grow lights?
    By jenn in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 6
    Last Post: February 23rd, 2010, 05:24 PM
  3. orchid grow lights or no lights
    By jap42 in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 4
    Last Post: January 26th, 2010, 01:13 PM
  4. Using Grow Lights
    By sadie in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 8
    Last Post: January 25th, 2009, 09:01 PM
  5. seedling heat mats
    By kewpie in forum General Orchid Culture
    Replies: 5
    Last Post: August 17th, 2004, 05:09 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OrchidTalk --An Orchid Growers Discussion Forum brought to you by River Valley Orchidworks. A World Community where orchid beginners and experts talk about orchids and share tips on their care, cultivation, and propagation.