One of my favorite plants in the garden this year is my Limerock Ruby
coreopsis. It has lovely red flowers with reddish-orange centers that
bloom in abundence. The only thing is that as the season progressed,
it went from a nice bush form into a straggily, unkempt mess. The
crown is an unsightly tangle of bare, brown stems. The stems lead to
nice, feathery foliage and plenty of flowers, but the crown is
downright ugly. (See a photo at
http://www.inhouzemusic.com/z/coreopsis.html ) How can I rejuvenate
this plant to get it back into an attractive bush again?

Thanks.

-F