I never knew this was such a problem, but we can do our part for free!! Inspiring!
Here is a link that might be useful: livemonarch
There has also been a busy exchange of milkweed seeds over on the Seed Exchange forum. Old timers are adopting new folk who haven't ever grown milkweed and supplying them with seeds and information on how to grow the various types. It's wonderful to see how many people we can get involved with technology. Hopefully, it will be enough and in time to save the Monarch migration.
Thx for posting that link.