I tried spraying what has become a small field of cow parsley, but it just looks sad. I tried strimming it down and digging out the roots, but they seem to end in Australia. While looking for inspiration I noticed that the Environmentalists are asking people to preserve cow parsley for wildlife. So, I now have backache and guilt. Any ideas? I would like to plant other things in the area to introduce some colour to an otherwise shady gloom. Is there anything that can compete with Queen Anne's Lace?