Feverfew can be quite invasive and is described as an "unrestrained self-sower". It can crowd out other plants within a few years if it is not cut back every once in a while. To put its self-seeding into check, shear off spent flowers after bloom. If you maintain your feverfew in this fashion you should be able to plant other things in your flower bed. Do not situate feverfew near plants that require pollination, as bees do not like to come near feverfew.
Interesting to note: Feverfew is said to be a good companion plant for roses as it will help keep the aphids away.
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