I agree with Columbine and honeysuckle. If it's Amur Honeysuckle (Lonicera maackii) you ought to give serious thought to killing it wherever it is. It will be on your land soon enough. Maybe you're in a different climate zone, but in Kansas it greens up first and goes dormant last, outcompeting everything. Birds spread the seed. Burning doesn't slow it down. It grows too tall for foliar spray. Cutting it really pisses it off. The cut stumps resprout 10 fold if you don't paint them. Once the big ones are cut down, annual mowing takes about 4 years to have an impact (have you ever tried mowing the woods?) I'm in my third year of a 5 acre test plot that I scraped the top inch or so of soil with my skidsteer bucket. I tore out everything but trees & lost a lot of them to root and trunk damage. I'm hoping the native plants will recover from the existing seed bank and the honeysuckle will be small enough to be controlled by competition & selective spraying. It doesn't look like it's working, but I'll give it another year or two. The stuff is just too thick. I'm still darn near spraying everytwhere (spring and fall) & killing the native stuff with overspray. My next test plot will be basal bark application of Remedy to the thousands of stems/acre. If those both fail, I'm thinking about mow & gly the entire woodlot (about 50 acres) for 2 or 3 years then reseed native forbs & grasses. I used to think Musk Thistle and Serecia Lespedeza were a PITA - I didn't know how easy I had it. :(
Columbine seed is typically ready for picking in Middle / Late July. Last year I picked a mustard jar's worth of seed, and if you know how small the columbine seed actually is, that is a ton of seed. Just wait for the flowers to turn brown and you'll have a seed pot filled with tiny little black seeds. It does well in sandy soils, partial shade.
Here's my daughter helping spread the seed around the farm.
kskid..I'd think a late fall foliar application of gly would be effective as well. I know that is a preferred method of buckthorn control. Both buckthorn and honeysuckle hold their leaves well into the fall while most natives have already dropped theirs. Makes hitting the targets easy and doesn't impact non-target species.
I have had okay luck with foliar application with a hot dose of gly prior to everything else greening up. I was told to try to spray it in the fall but there isn't a way in the world i am going to do that. I have found hack and squirt to be just about as easy late winter.