So this is what happens when I get busy with other things and don't follow my own posts! Sorry about the delay LOL.
I purchased a butterfly garden kit seeds from a friend as part of a boy scout sale, or school sale, I dont remember which. I then also got one of those butterfly mix seed packets when I was at Ace hardware looking for plumbing supplies. So I planted all from seeds and it pretty much took all summer for the plants to establish. I still have quite a few weeds growing as well. However, the mix of the 2 packets produced some very super tall Zinnias as well as Bee Balm. There is some purple coneflower too which did not produce any flowers this year. There is some milkweed which is really supposed to attract butterflies and encourage egg laying. As a nice bonus, we attracted a hummingbird which I unfortunately did not get to see but my husband did! I also planted a Butterfly bush right next to the butterfly garden and it bloomed really nicely all summer. I am pretty much planning on letting the plants naturalize for a couple of year before trying to get the weeds out. We do have some sort of groundcover that has really pretty little white flowers in it. I'm sure it is some sort of weed but I've let it go just because it looks so nice. There are several other types of flowers that should have been in the seed mix, I think daisies are one. I cant remember. The kit from my friend had more high-quality seeds with nicer plants than the one I got from the hardware store. But, considering that the butterfly garden was planted over a previous weed pit, it is much of an improvement.
And, the chickens did not do any significant damage to the butterfly garden except for pecking up some of the little sprouts.
Kris