Tussies, I grow lots of perennials from seeds, divisions or cuttings. When I lived up north, I grew coneflowers, sunflowers, black eyed Susan's and coreopsis from seed. I would divide or collect seed from them and after a few years I had huge beds full.i started them in pots inside so I could control the light and moisture then quickly put them outside in the pots until they were big enough to transplant. I also grew lots of herbs that way. I have parsley and dill from seed ( for the black swallowtails) and have basil from a neighbors cuttings.
How I raised monarchs. I planted native milkweeds and kept some of them in pots. The Monarchs are here early anxious to reproduce. Once I had caterpillars I took them inside on the potted milkweed to protect them from the birds, wasps, and chemicals my neighbors put on their lawns. Once in chrysalis just before hatching out they went. They usually hatch mid morning so I hung around to keep their natural predators away the first few hours when their wings were hardening. You can tell when the caterpillars are going to turn into Crysallisses and When they are ready to hatch. I found this info on the Internet.
I also joined an orchid club, a native plant club and a butterfly gardening club. See what clubs are around you. You can often get seeds or cuttings, sometimes they share or have plant sales. It is fun and informative to be around people in your "tribe". I have seen fabulous guest speakers, and have received or bought lots of stuff. Your county extension could be a huge help. Right plant in the right place is a huge help to having a successful garden. Not sure what to say about the deer. I live close to a huge wetlands area so seem to have lots of natural predators for the bugs and the alligators leave the plants alone. I am always on the lookout for snakes. Have only seen harmless ones so far but I keep my distance.