I think you cant get more polyculture than transplanting native weeds in your garden. There are several wild medicinal herbs that I plant in the garden(yellow dock, burdock, plantain, dandelion,etc). These plants are powerful medicine, just like the rest of the garden, but these herbs are a notch above vegetables, medicine wise.

Even just living next to the woods or any natural ecosystem can be considered polyculture.

Nearly all home gardens are polycultures.

Polycultures depend upon what your needs are. Don't grow something if you are not going to use it somewhere useful. If you are looking for ready-made lists of polyculture plants to grow, that also depends upon which growing zone you are in, growing conditions such as yearly rainfall amount, as well as whether you prefer forest polycultures to open ones. There are a lot of variables within the term.

If searching for companion plantings, however, there are a plethora of lists found all over the internet. Use them. But it might benefit you tremendously to do some further research into polycultures first before planting anything permanent. Here are a few websites you could gain additional insight from:

http://www.permies.com/
http://www.rootsimple.com/2006/12/polyculture/
http://www.backyardabundance.org/Portals/0/p/Handout-PolyculturePlantingGuide.pdf

All set. Thanks

i love the fact that dandelion, dock, and evening of primrose all decided to fill up and area i had left open....
i was waiting to plant a couple of papaya trees, and conditioned the ground first, leaving it for a month.

i had added a lot of coffee grounds grass clippings and compost, and mixed it in, raising the the bed a few inches above level.

i wanted to wait a month for it to warm up, and for it all to break down before planting.

i added just one papaya, and left the rest of the area for local weeds to come in. glad i did, ,there is so much wildlife - bugs, lizards, dragonflies etc... it increased the insect and lizard population 10 fold in my yard

I hate to be a pest, but, dandelion is not native to North America.

JP