- http://monarchlab.org/biology-and-research/monarch-rearing/finding-collecting-and-growing-milkweed/
- http://www.saveourmonarchs.org/why-milkweed.html
- http://www.monarchjointventure.org/about-us/
- http://monarchjointventure.org/images/uploads/documents/MilkweedFactSheetFINAL.pdf
- http://butterfly-conservation.org/45/why-butterflies-matter.html
- http://www.fcps.edu/islandcreekes/ecology/common_milkweed.htm
- http://www.joyfulbutterfly.com/milkweed-plant-for-monarchs/
- http://www.ourhabitatgarden.org/creatures/milkweed-growing.html
- http://nativeplantwildlifegarden.com/help-monarchs-with-the-right-milkweeds/
- https://youtu.be/h06zkEG7a4k
- http://seed-balls.com/life-cycle-of-milkweed
- https://www.livemonarch.com/free-milkweed-seeds.htm