For Pennsylvanians, the Department of Conservation and Natural Resources has a nice PDF listing native plants by type of site (sunny/dark, dry/most) and some notes for each plant (preferred soil type, if they're used by pollinators, etc.):

http://www.dcnr.state.pa.us/cs/groups/public/documents/docum...

What an awesome website. Lots of good information well laid out.

Might be good to consider that this is your opinion and not necessarily objective fact.

Please be careful where you sow milkweed..the plant contains and will leak latex ..this can cause skin burns/allergies and should get into eyes or mucus membranes.

[..] Thick, milky latex (sap) is present in all parts of the plant. ... Common milkweed, Asclepias syriaca, is native to North America and is one of the most important northern plants for the monarch butterfly. Monarch caterpillars and butterflies are bitter and poisonous to birds, due to a toxic alkaloid in the latex.[..]

[..] Caution: Do not get milkweed sap in your eyes (such as rubbing your eyes after touching the sap); wash your hands thoroughly after handling the plant. Also, some people may develop an allergic reaction when the sap touches the skin.[..]

And the welts and scars post latex exposure and dermal damage wont go away easily. It’s also painful.

Be careful that it is the correct milkweed.

Some species of milkweed don't have enough caloric content to feed the butterflies sufficiently for their migration and they die partway through the trip.

There are quite a few people claiming the opposite, actually. Large squares of regularly trimmed, flat grass only to show one's decadence isn't exactly the same as a road used daily.

If they were at least used for playing children, that would be one thing, but most front lawns are large spaces not designed for any purpose beyond aesthetics, and many back lawns have similar structures. It is almost devoid of life thanks to the lack of protection from the sun combined with the lack of diversity in vegetation, just so someone can show off their property.

Then I'll add to the idiocy. I think fake lawns are stupid. (/opinion)

Lawns are a big waste of potential. What could be a thriving ecosystem is basically an eco-wasteland. I would not be surprised if they were originally popular with aristocracy precisely because how stupid and useless they were (a Veblen good, signaling that the owner is rich enough to afford such stupidity).

Honestly, those things are pretty stupid too. Car dependency, enabled through incorrectly priced roads that don't account for externalities, is one of the greatest drivers of climate collapse, and production of cement to make concrete is one of the largest sources of CO2 emissions.

Those are all bad too. It's idiotic to think this makes lawns less of a problem.