It's ragweed-harvesting
season in our neck of the woods! No, I didn't go out looking for this
source of biomass --- it grew up quite naturally in the parts of our
garden that haven't yet been cultivated.
If you catch ragweed as
it's blooming and just before it goes to seed, you
can use the cut plants as mulch around perennials. This year, I opted to
merely pile the stalks up in the center of the garden to compost in
situ. More organic matter in a garden is always a plus!