In response to the person upset about mowing the roadsides and disturbing bee and butterfly habitats: mowing is an absolute necessity! I have two words for you: wild parsnip. It is a horribly invasive plant. The sap will leave burns on your skin, your dogs' noses, too. When the roadside brush dries up, one cigarette tossed out of a vehicle can cause a fire. If you want to encourage bees and butterflies, there are many plants you can grow in your own yard to encourage their visits. Check with a local garden center or Cooperative Extension.