Butterfly gardening
en.wikipedia.org
en.wikipedia.org
One thing I learned from my local 4-H is that monarch butterflies only eat milkweed--the linked Wikipedia article clarifies that they only eat from the milkweed genus--but that was a surprising fact. The species within that genus are also not equivalent in terms of function for the monarch's lifecycle, as the linked article also mentions, so it's important to plant an appropriate species with respect to your location.
In addition to milkweed, there many plants that butterflies (and other pollinators) enjoy--I've had great success with zinnias, coneflowers, yarrow, and a few others, too. So it is worth taking a look at the resources in your area and planting native pollinators when you can.
Definitely seconding the idea that you need to plant something appropriate for the monarchs that migrate through YOUR area.
What does "advanced" mean, of flowers?
https://www.arlingtonma.gov/Home/Components/News/News/12848/...
Let butterfly gardening be your gateway drug!
Same for https://www.arlingtonma.gov
VPN via Spain, Switzerland and US works.
People has been brain-wired for generations with the absurd idea that everybody must to play golf in their lawns, and spend the weekends mowing, or will be tagged as a lousy bad neighbor. Many of the species that were easy to found some decades ago vanished locally by this ignorant mentality.
But is so simple as letting a part of the lawn more natural and cut it three times a year; and avoid poisons at your home that don't solve anything. Introduce some wildflowers and people suddenly starts changing their view.
Assure to include a wild hedgerow somewhere in your property with a mix of native flowering and nurturing shrubs and; if you are interested in butterflies; place a moth trap near this shrubs. You will be surprised.
I have to reply here. The problem is not the mowing of the lawn:
The problem is the lawn itself!
Clear off the grass!
The crux of the matter is:
Grass will absolutely kill wildflower, so if you want a pretty flower carpet, clear off the grass before you sow. Remove it with roots, and by hand, as a machine will only chop it up and it will regenerate from there killing your flowers. Start with a small patch the first year. Also, pick any wildflower mix, even if cheap. Once the grass is gone it will grow nicely. You do not have to tend it. Just sow it, and leave it.
> Monarch
Please, the Monarch is not the only butterfly around. Besides, monoculture is NEVER good, not even a focus on one particular butterfly type. There are several, some visible by day, and even more (not very visible) at night.
What's more, there are beetles, bees, all kinds of weird flys and whatever kind of insects in absolutely fascinating colours and looks that seems taken right out of a LLM model, so weird it is. Sit by your patch daily after it comes up - even if just for 10-15 minutes - if you have curiosity, you will be amazed.
In Mediterranean Europe you may want to attract the swallowtail so you need to plant fennel instead
My inspiration as a child was L. Hugh Newman's Create a Butterfly Garden; probably out of print these days, but it was a delight of a book for a youngster in the 70s.