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Thread: P. grandiflora

  1. #1
    Always a newbie glider14's Avatar
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    is P. grandiflora ok to grow outside in zone 6? and if so how much light does it need to grow in winter and summer months?
    Everything is explainable. The seemingly unexplainable is but a result of our insufficient knowledge.- Hans Brewer

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    indymental's Avatar
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    I don't know what sort of temperatures you experience in zone 6 but P. grandiflora need really cold temperatures in the winter months so they can have a proper dormancy. In winter light is not so important a they are dormant hibernacula, with barely the tips of the dormant bulbs poking out of the surface of the peat mix. Without some freezing cold periods though they will not prosper. Mine live in the garden in the winter and experience frost snow and temps as low as 14F. In the summer they like a lightly shaded spot so that they don't scorch when the sun is hot.

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    Always a newbie glider14's Avatar
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    your temps seem like mine here. its always very cold here in the winter(except this witer where it has gotten up to 70 once!!) and mildly hot in summer. rarly into the 90's.
    thanks
    Everything is explainable. The seemingly unexplainable is but a result of our insufficient knowledge.- Hans Brewer

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    P. grandiflora like cool summers (in the 70's) and cool summer nights in the 50's, otherwise they may melt.

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