We more than doubled our milkweeds (now 40 plants) and added a half dozen Lantana bushes for shelter and general nectar source. Our habitat is certified by the National Wildlife Federation. We had to add a “puddler” that provides fresh water to butterflies that will not approach open water. The puddler provides moist sand for the butterflies to “drink” (i.e., absorb) with their proboscis. A Monarch will not go near open water. Our nectar sources earned us registration as a “Wildlife Habitat” by the Xerces Society (google them). Xerces is devoted to important invertebrates that serve as pollinators.