Desert Bluebells

Phacelia campanularia, aka Desert Bluebells, a California native wildflower, grows readily from seed, glows blue and burgundy, and seeds itself in new and interesting places year after year. Seeds are often available on your closest rocky hillside in the late spring. 

Or, do like I did. Receive the seeds as a gift from your very-talented-gardener-mother (or father or aunt or friend, whatever your equivalent). Tuck the envelope into your backpack for safekeeping on the trip home. Promptly forget the seeds are there. Continue to forget for a couple years, then find them one day, releasing a weird squeal-groan combo that simultaneously expresses delight at finding what was lost and guilt for losing it in the first place. Plant the seeds that fall. The following spring, collect seeds from the plants that resented your forgetfulness the least, and toss them around the yard. Then, wait for this year's show of plants that have fully forgiven.