User Tag List

Informational! Informational!:  0
Likes Likes:  0
Results 1 to 6 of 6

Thread: U. longifolia flower stalks early this year

  1. #1
    mobile's Avatar
    Join Date
    Nov 2007
    Location
    Aberdeenshire, Scotland
    Posts
    1,070
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    U. longifolia flower stalks early this year

    My U. longifolia typically puts up flower stalks in early spring and flowers throughout the summer, but this year it has started early. I've suspected that slightly warmer weather might be the flowering trigger, but this year has dispelled that theory, as it is the coldest it has been so far this winter. The plant is in a room in the house which has very little heating, just receiving ambient heat from the rest of the house, so temperatures in there are cool.


  2. #2
    kulamauiman's Avatar
    Join Date
    Jul 2009
    Location
    Kula, Maui USA
    Posts
    1,921
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Mine are outside and I have them making spikes and flowering. Spikes might have started in December. Flowers beginning of January. Don't know that we can compare our conditions. Days are in the low to mid 70 F range and nights mid 40 F lowest so far.

    Taken new years day.


    Jan 5, 2013


    An Amp water droplet Shot taken the same day

  3. #3
    mobile's Avatar
    Join Date
    Nov 2007
    Location
    Aberdeenshire, Scotland
    Posts
    1,070
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    70C would be approximately the daytime temperature in there, with the heating switched on in surrounding rooms, as it is now. Approximately 55F is the lowest temperature showing on a nearby min/max thermometer, which I suspect was from recent days.

    I can discount light levels and duration as being the trigger, as it is grown under metal halides year round.

  4. #4
    kulamauiman's Avatar
    Join Date
    Jul 2009
    Location
    Kula, Maui USA
    Posts
    1,921
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    could you get ambient light when the metal halide lights go off?

  5. #5
    mobile's Avatar
    Join Date
    Nov 2007
    Location
    Aberdeenshire, Scotland
    Posts
    1,070
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Theoretically reduced light levels could be the trigger.


    • It is in a north facing room, with only indirect light.
    • The grow shelf is to the side of the window, approximately 2 metres away. The plant can't 'see' out of the window.
    • The window has blackout curtains, which are typically opened at 8am and closed at sundown, or sometimes a little earlier on long summer days. In winter months they are nearly always closed at the same time of day.
    • The MH lamp is on from 9am - 10pm year-round.
    • There would typically be daylight year-round at the time of morning the curtains are opened.
    • There would be no ambient light available to the plant any time of year when the lights are off.


    So, given the above, the only light influence I can think of is the difference in indirect light duration between summer and winter. Given that this is short now and the plant has flower spikes, that would mean short duration.

  6. #6

    Join Date
    Apr 2011
    Location
    San Antonio, Texas USA
    Posts
    998
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Mine started a flower shoot about three weeks ago. Last year I took it to a plant show in May, while in flower.

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
  •