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Re: Seeds Under Lights Versus Greenhouse

> The light source (spectrum) is very important. Plant responses are
> controlled by the red-far red end of the light spectrum (this is the
> phytochrome bit).  They also respond at very low light levels, but you need
> the right spectrum, ie the red end. You don't need anything fancy, ordinary
> incandescent bulbs will do the job. Flourescent tubes will not. So if you
> are looking at extending photoperiod, all you need are a few incandescent
> bulbs, nothing fancy.

Even if you use a so-called "warm" fluorescent tube?  I don't know 
of any incandescent bulbs that fit in a fluorescent ballast (typical
grow light setup).

-- 
Amy Moseley Rupp
amyr@austx.tandem.com, Austin, TX, USDA zone 8b, Sunset zone 30
*or* amyr@mpd.tandem.com
Jill O. *Trades, Mistress O. {}
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