Jane McGary
Mon, 16 May 2005 08:41:56 PDT
David Victor wrote,

>I saw your note about germinating Tropaeolum.  I grow quite a few and 
>generally follow Norm Deno's idea on them.  He says give them four weeks 
>at 70F, followed by a period at 40F.  They then germinate within a few 
>weeks, but need to be kept cool until the stem starts to emerge.  Then 
>they can be potted up, but very carefully.  They are threadlike and very 
>brittle at that stage.

In my experience, a lot of seeds from dry temperate South America germinate 
best if stored at room temperature (around 70F, that is) over the summer 
and then planted in fall and exposed to outdoor temperatures (not freezing 
but quite cool, here) for a month or two. Rather than germinating them as 
David apparently does, in moist paper towels or some such, I think it's 
better to plant them in a seed pot right away, because, as he says, the 
seedling stems are quite fragile. They will grow on happily through the 
winter, kept in a frost-free location, and go dormant in early summer, one 
hopes having formed tubers if adequately nourished with liquid fertilizer.

Jane McGary
Northwestern Oregon, USA

More information about the pbs mailing list