Narrowleaf Milkweed seeds
Californians, this one is for you!
Narrowleaf milkweed is the native host plant for the California Monarch. It's totally magical how planting this in your garden brings the Monarchs. Even when it's a teeny plant, they'll find it.
Over the years I've grown tons of this variety, and I'd be lying to you if I said it was easy. It's a bit fickle to grow. Germinates easily (especially with cold stratification, though I've found it unnecessary), but growing on and transplanting can be a challenge. It's a challenge that's worth the effort though. Of the 20 - 30 seedlings I get started each year, 2-3 make it to the next year. Some are lost to gardener error, others are lost to the monarch caterpillars, which is a great thing!