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Orlaya grandiflora seeds require stratification?

I have a packet of Orlaya grandiflora seeds from a seed company I respect, and was very surprised to see on the back "Germination improves with seed stratification (a moist/cold treatment." I don't think I've ever heard of an annual in our region benefiting from stratification. Thoughts?

Comments (5)

  • zen_man
    6 years ago

    I suspect your seed packet is correct. This Johnny's Selected Seeds page

    says "Chill seed at 40-45°F (4-7°C) for 1-2 weeks prior to sowing in the greenhouse." In some locations they are apparently sowed outside in the fall to get cold weather exposure.


  • Rick (zone 6b, MA) Charnes
    Original Author
    6 years ago
    The seed packet I have is from Botanical Interests, so they are in agreement with this. Interesting – this is the first I've ever heard of an annual benefiting from stratification.
  • zen_man
    6 years ago

    My guess is that larkspur also benefit from stratification. Maybe some poppies.

  • Rick (zone 6b, MA) Charnes
    Original Author
    6 years ago

    Yes, Larkspur and Poppies as well - interesting.

  • hmhcdn
    last year
    last modified: last year

    Many many annuals benefit from stratification! I don’t think it’s as necessary with annuals but after reading university extension articles about it, they speak a lot about better quality and QUANTITY of flowers ... The orlaya that I allowed to self seed in the fall where I live in Ontario Z4, is already sprouted w 2-3 leaves ea. In the middle of April ...and there is still snow! Mind you, they are tiny but at least have germinated -which can be issue for this prickly little seed...

    I don’t know if Orlaya is considered a hardy annual maybe?

    I have collected seed from last year stored in a cool basement that I have been stratifying in the fridge now for a couple of weeks and will also just throw some straight in the garden to measure the difference... I’m sure the latter will take the longest to get going but Orlaya definitely is a great little flower to succession plant , I never want to be without them they are so bright white and beautiful!

    I’m not sure, but i do think they need light to germinate as well, maybe somebody here can confirm ? Seeds left from last year’s plants were just pressed into the topsoil before I mulch with leaves for the winter ....and those are the ones that have already germinated -in a freezing cold month! So they also don’t need bottom heat to get going !...and because they are a tap root like Queen Anne’s lace, i would not bother starting them inside where I live..

    (Does anyone else have problems on this site correcting/editing their comment in real time? )

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