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Thread: Pygmies under flourescent light - how to produce gemmae?

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    Moderator Cindy's Avatar
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    Pygmies under flourescent light - how to produce gemmae?

    I've been growing the following plants under T5s. They flowered for me and I thought perhaps soon, I could try and stimulate gemmae production.

    D. puchella
    D. occidentalis x puchella
    D. ericksoniae x puchella

    They are now receiving 12 hours of artificial light and are growing normally as they would for spring. How should I go about stimulating summer, then autuum so that the plants would produce gemmae?

    Another question: Are the flowers of the above plants self-pollinating and produce viable seeds?

    Thanks!
    Cindy

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    NECPS President Dave S.'s Avatar
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    I would alter the photoperiod (reduce) to simulate a change in seasons. I had some that received a fixed 14-hour photoperiod and they would flower like crazy, all the time, but no gemmae. I have no experience in getting these to prodce seed.

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    Illinois droseraguy's Avatar
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    In the fall I set the daylenght to 10 hours and put in the basement 50-60 F. temps. After a few months they all seem to produce a bunch of gemmae. In the spring temps are upped to 65-70 and 16 hours of light. My D. scorpiodes is flowering with a band of gemmae around it's middle. As far as seeds go ? good question.
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    Tropical Fish Enthusiast jimscott's Avatar
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    As implied above, they should experience a change in seasons, which include lighting, water, and temperature. They seem to need a relatively dry, hot summer, followed by cooler temps and more water. It is in our autumn that they produce gemmae.

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    Moderator Cindy's Avatar
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    Thanks, everyone. Does flowering exhaust the plants? I notice that tropical sundews like D. intermedia and D. spatulata put out smaller leaves when flowering.
    Cindy

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    Always a newbie glider14's Avatar
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    Cindy: i have D. pulchella. its a pink.purple flower form. mine produces seed even if i dont help it. in my experience flowering does not exhaust my plant. the only think i have noticed is slower growth. but its such a small change that you really dont see a difference. speaking of seed. i have some i just collected from the plant a few days ago.
    Alex
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    Tropical Fish Enthusiast jimscott's Avatar
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    I've never noticed flowering to have any negative effects.

  8. #8
    slau
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    I've also observed spathulata putting out smaller leaves while flowering. And Burmanii shrinks half its size while flowering and it looks very raggard after that.

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