I keep planting milkweed at my house but apparently the bunnies and deer in my neighborhood love the stuff... and I've had three years of dead milkweed at the end of the season.

Will try again this year, with a higher chicken wire fence around the plant area. Many local organizations provide free milkweed seeds and/or plants to get you started (we have the Missouri Botanical Garden in St. Louis which provides seeds every year).