To support the rebuilding of the monarch butterfly population, there are several plants that provide nectar and egg-laying sites.
First, I recommended that San Antonio gardeners plant native milkweed plants. Monarchs lay eggs exclusively on milkweed, and they prefer the native varieties. One issue with native milkweed plants is that they often are not mature enough in time for the spring migrants that pass through San Antonio in April. But many think it’s better that monarchs wait to lay their eggs for that first generation of the migration until they travel further north.