Here is the blog of Doug Kalal from Great Gardens Landscape Design. Use the search box to find lots of great ideas for your landscape.
Any advice on how to manage this plant? Should it be cut back at some point or be treated as an annual perhaps? Ours is coming back after going to seed, but is covered with aphids.
The best time to trim Asclepias in San Diego is in February before the the new growth developes. Trim it down to your knees. If you live outside of California (or similar areas) then wait a month. As for the aphids, just blast them with water. Aphids can't survive a direct hit. I will be doing a post on aphids later in the spring.