permaculture

[Toby Hemenway <hemenway@jeffnet.org>]

It's interesting that many of the plants on this allelopathy list are
grasses. Grasses as a whole evolved much more recently than the flowering
plants--they arrived in conjunction with mammals (i.e. grazers and grass
co-evolved). Makes me wonder if grasses have more sophisticated chemistry
than the more ancient flowering plants, and somehow figured out how to
squelch the growth of other vegetation.

Toby 
> 
> barley 
> rye 
> annual ryegrass 
> buckwheat 
> oats 
> sorghum 
> alfalfa 
> wheat 
> red clover 
> sunflowers
> horseradish 
> carrots
> quack grass 
> giant and yellow foxtail
> crabgrass 
> curly dock 
> canada thistle
> 
> Lisa in Ashland Oregon
> 
>