There are two forms that I grow- the double flowers as in the picture above, and the single daisy-like flowers as in the picture below.
The post is going to focus on the single flower form.
Once you have this plant in your garden, it's pretty easy to keep it. I have found feverfew to be a short lived perennial, but it reseeds so easily that I usually have plenty in the garden. The plants stay low throughout the winter and then start to shoot up in March and April. The bloom time is from mid April through late May or early June. Leave some of the flower heads on the plant until they have died to ensure they reseed. Afterwards I suggest cutting the plants back to keep the clumps neat.
Check out a few bouquets that feature this Oh-so-sweet-flower!
Coral and white zinnias, white calla lilies, blue Chinese delphinium look great with clusters of feverfew...
And so does this bouquet of Snow on the Mountain Euphorbia, yarrow and white roses.
Two good sources for seeds are Select Seeds and Johnny's Selected Seeds