This section is from the "American Horticultural Manual Vol1" book, by J. L. Budd. Also available from Amazon American Horticultural Manual, Part One (1902).
We now have many beautiful varieties of Feverfew with double flowers and a wide range of colors. They flower in June, but if the old flowering stems are cut away they usually flower again in autumn. The roots at the West must have root protection in winter.
 
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