And that's fantastic!! Starting a pollinator garden and/or encouraging people and businesses around you to do the same is an excellent way to help not just Monarchs but many other threatened and at-risk pollinator species!
Please please PLEASE do not obtain Tropical Milkweed for this purpose!
Tropical milkweed (Asclepias curassavica)--also commonly known as bloodflower, Mexican butterflyweed, and scarlet milkweed--will likely be the first species of milkweed you find for sale at most nurseries. It'll be fairly cheap, too, and it grows and propagates so easily you'll just want to grab it! But do not do that!
- Harboring a protozoan parasite called OE (which has been linked to lower migration success, reductions in body mass, lifespan, mating success, and flight ability) for long periods of time
- Remaining alive for longer periods, encouraging breeding during migration time/overwintering time as well as keeping monarchs in an area until a hard freeze wherein which they die
- Actually becoming toxic to monarch caterpillars when exposed to warmer temperatures associated with climate change
The world of native milkweeds is vast and enchanting, and I'm sure you'll soon find a favorite species native to your area that suits your growing space! There's tons of amazing options--whether you choose the beautiful pink vanilla-smelling swamp milkweed, the sophisticated redring milkweed, the elusive purple milkweed, the alluring green antelopehorn milkweed, or the charming heartleaf milkweed, or even something I didn't list!
And there's tons of resources and lots of people willing to help you on your native milkweed journey! Like me! Feel free to shoot me an ask if you have any questions!
TLDR: Start a pollinator garden to help the monarchs! Just don't plant tropical milkweed. There's hundreds of other milkweeds to grow instead!