I hate the use of chemicals, including those considered 'not really' chemicals, like salt and vinegar.
Using them displays a self-centred, short-sighted attitude to other living creatures, ecosystems and our future
cut them back very hard in late winter, just a few inches above the ground,
Through the summer remove anything that goes in a direction you don't like
Alcea ficifolia, Fig-leaved Hollyhock
Might be willow from Peru Hosta. Did a google and came up with an aquatic plant related to Oenotheras.
look at Asclepias, common names are a minefield. Don't know which one the Monarch eats. Chiltern seeds used to do several species
Are there Monarchs on the loose in your area? whatever you grow they need to be out there to find it
Ivy-leaved Toadflax, Cymbalaria muralis
Make them smaller and start with the camera icon. There has been a recurrent photo loading problem. I thought it was OK atm though
what's Peruvian Willow?
1 looks like Campanula persicifolia
2 squash or similar
3 could be willow, but some sort of tree
4 could be dahlia but I check for smell in case it's another elder like 5