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Re: [SG] sunflower seeds...question

> Have I unwittingly reduced the chance of my wildflowers getting established
> because their seeds won't be able to germinate?  Are some species more
> sensitive to this than others?

Yes, and yes... but depending how strongly and how long you brew your
coffee, you may not be tossing out much caffeine.  Caffeine is pretty
water-soluble stuff, and within 3-4 months most of it is going to be
washed down past the root zones on most plants, if it hasn't been
broken down by soil microbes.

You know when you brew ice tea really strongly, then put it in the
refrigerator?  That  cloudy stuff is caffeine coming out of solution
because it's not as soluble in cold water as warm.

I suspect you could get a rough idea of the amount of caffeine remaining
in your coffee grounds by brewing a fresh pot with old grounds, then
refrigerating it.  If you don't get the cloudiness, it's probably not
too bad for your seeds.

Considering the strength of the average Minnesota Lutheran holy
water, however, I make no predictions about the amount of caffeine
left in *your* coffee grounds.  ;-)

Kay Lancaster    kay@fern.com
just west of Portland, OR; USDA zone 8 (polarfleece)
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