An annual, the bidens plant started with simple yellow blooms, but it’s now available in various colors. Most commonly grown as a trailing or groundcover plant, bidens are also available in more upright types that work wonderfully as a bedding plant in the ground. This tough annual can keep blooming through some genuinely rough conditions. Once they’re established, bidens plants are quite drought tolerant. While they can tolerate drought well, they appreciate regular watering when possible. A too-long period of drought can affect their blooming potential. For the best blooms, plant Bidens in full-sun. While they can tolerate part sun, it’s not advisable as they won’t bloom as well, and the overall plant habit can become leggy and unappealing.