Brendan Danley wrote:
Can you use the double flowered feverfew the same as the regular old one? I would guess yes...
I would also say yes, especially for any uses of the leaves. I would guess that with the flowers, depending on which part of the flower contained the active ingredient, the effect might be slightly different.
I used to be fascinated by this plant as a child, it seeded with prolific abandon in my back garden, but was the single flowered golden leaved variety. Now a golden leaved double would be the best of both worlds!