Black eyed susans have yellow petals, a dark dome-like center, and long stems. This plant is a perennial, which means it will come back year after year. Because the plant can be propagated by dividing the rhizomes, I do not bother collecting the seeds. In fact, I do not allow the flowers to go to seed because I want the longest blooming period possible. To prolong the blooming period, take regular flower cuttings or dead head spent flowers.
These flowers do well in full sun, but can survive in light shade. Once these plants are established, they are fairly drought-tolerant. I started these plants from seeds earlier this year. I currently grow these flowers outside in full sun in an unsealed terracotta container. They have been able to easily withstand California's dry, hot weather even when I have neglected to water them for a few days. I plan on dividing the rhizomes later this fall.
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