On 5/24/12 9:43 AM, BlackThumb wrote:
Imagine you have a sunflower growing in a large pot of soil. When that
sunflower dies, how could you reuse the soil?

I read that you can mix it half-and-half with soil from a compost heap,
but I don't have one, and my Mum doesn't want one.

Could you mix fertiliser into it? Or what about crop rotation? (We
learnt about it at school, but I can't remember how it works).

It seems counter-productive to keep buying more compost, when gardening
is supposed to be economical.

When I discard a potted annual or repot a perennial, I use the old
potting mix to level uneven spots in my lawn and flower beds. I spread
the old mix not thicker than 1 inch, so it might take a while to raise a
low spot.


--
David E. Ross
Climate: California Mediterranean, see
http://www.rossde.com/garden/climate.html
Gardening diary at http://www.rossde.com/garden/diary