From spring to fall, coreopsis, also called tickweed, is an easy-care plant whose yellow, orange, red or purple flowers will attract butterflies to almost any garden. And once it has finished blooming, the seed heads will attract birds as well. The annual coreopsis can be grown in all USDA zones, while perennial choices are at home in all but the coldest or hottest climates (think Alaska, southern Texas and southern Florida). For something really unusual, check out C. tinctoria ‘Tiger Stripes’.
Common names: Coreopsis, tickweed, calliopsis
Botanical name: Coreopsis
USDA zones: All, depending on species
Water requirement: Little to moderate
Light requirement: Full sun
Mature size: 1 foot to 2½ feet
Growing tips: Coreposis is generally happy with any soil as long as it drains well. Provide water to establish, then the plants can handle less moisture during the growing season. Deadhead regularly for repeat blooms or leave some blossoms to reseed. This plant self-sows and spreads rapidly, so you may need to divide it every few years.