Hippeastrum seeds and light

Darren Sage darrensage100@hotmail.com
Fri, 17 Feb 2006 11:29:10 PST
If you can send any photos to me I would love to see them.

Thank you,

Kind regrds

Darren


>From: "Jamie V." <jamievande@freenet.de>
>Reply-To: Pacific Bulb Society <pbs@lists.ibiblio.org>
>To: Pacific Bulb Society <pbs@lists.ibiblio.org>
>Subject: Re: [pbs] Hippeastrum seeds and light
>Date: Fri, 17 Feb 2006 10:30:46 +0100
>
>Darren,
>
>I've been germinating a few Hippeastrums over the past months and concur
>with Hans-Werner in the temperature area.  I have found that germination
>is equally good when I float the seeds in water, plant them on the
>surface or plant slightly below the surface.  Constant moisture seems to
>be key, without it getting soggy wet. (Hans-Werner's suggestion about in
>the dark makes excellent sense.  The moisture level would be more
>consitent).  In the garden, I would try preparing the soil to smooth it
>out, plant the seed on the open surface and then cover lightly with
>clean sand, to hold them in place and maintain moisture/soil contact.
>With the temperatures you have in La Paz, they should be showing leaves
>in 2-3 weeks, I would think. I can't see planting them more than 1cm
>below the surface as advantageous, but I may be wrong.
>
>Something I've notices over the past months of germination; not all
>seeds/crosses germinate in the same time span.  Some have been very
>quick, mainly from large-flowered crosses, while those of H. cybister,
>H. striatum, have been a bit slower, say another 10 days later.  This
>could be coincidence, or simply another adaptation to the species
>natural environment.
>
>While on this topic, I have had the pleasure of blooming some of the
>newer hybrids this Winter, among them H. xGiraffe, H. xLaPaz, H. xTosca,
>H. cybister 'Reggae', H. xExotic Star, H. xEmerald and H. xBenfica.
>Giraffe is a favourite with it's slightly twisted, veined blooms
>underlayed with green.  Also a robust grower.  Can't wait to have a
>clump growing.  It will be a show-stopper.
>
>I hope to poat some photos soon.
>
>Jamie V.
>Cologne
>
>
>Darren Sage schrieb:
>
> > Thank you.
> >
> > How deep can they be planted?
> >
> > I intend to grow then outside, where we have current temperatures of
> > 15-25 C night/day.
> >
> > Kind regards
> >
> > Darren
> > (L Paz, Mexico)
> >
> >
> >> From: "Hans-Werner Hammen" <haweha@hotmail.com>
> >> Reply-To: Pacific Bulb Society <pbs@lists.ibiblio.org>
> >> To: pbs@lists.ibiblio.org
> >> Subject: Re: [pbs] Hippeastrum seeds and light
> >> Date: Wed, 15 Feb 2006 16:15:32 +0000
> >>
> >> Hi Darren:
> >>
> >> You can germinate hippeastrums in the dark.
> >> This is even advantageous because then the substrate dries out more
> >> slowly.
> >>
> >> However when the first seedlings show up with leaves 1 cm long  then
> >> it is
> >> high time to apply natural light or artificial light from fluorescent
> >> tubes
> >> or high pressure metal halide discharge lamps, the area related 
>electric
> >> installation power being in the magnitude of 200 Watts / square meter.
> >>
> >> I recommend "only" 22 to 25°C indoors.
> >> That is enough in order to envoke full growth speed.
> >> Higher temperatures means a shift of the light/temperature ratio
> >> indoors to
> >> a critical lower level and might provoke a more elongated, unstable,
> >> watery,
> >> spillery growth.
> >> For the same reason there might be some advantage to reduce the night
> >> temperature.  For energy saving reasons (I admit), but with this in 
>mind
> >> too, I reduce the air temperature to 20-22°C at night.
> >>
> >> There is another point of view associated with these recommendations
> >> which
> >> might become relevant - much later: You disadvantage those seedlings
> >> individuals which have a higher or particularly high temperature 
>demand.
> >> For my part I never want to keep such capricious seedlings. These
> >> should all
> >> be thrown away when the moment has come to select and  replant the
> >> youngsters.
> >>
> >> Hans-Werner
> >>
> >>
> >> >From: "Darren Sage" <darrensage100@hotmail.com>
> >> >Reply-To: Pacific Bulb Society <pbs@lists.ibiblio.org>
> >> >To: pbs@lists.ibiblio.org
> >> >Subject: [pbs] Hippeastrum seeds and light
> >> >Date: Tue, 14 Feb 2006 23:37:18 +0000
> >> >
> >> >I have been making my first crosses and have just harvested my first
> >> seeds
> >> >today.
> >> >
> >> >Is light needed for germination?  What tempertures are recommended?
> >> These
> >> >are crosses from large flowered hybrids.
> >>
> >>
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> >
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