People usually wilt under the scorching summer heat, but the verbena flowers actually bloom when mercury levels rise. /VCG Photo

These beautiful and colorful flowers have given a tourist garden in the city of Zhenjiang, east China’s Jiangsu Province, extra appeal. /VCG Photo

The five-petal flowers attract visitors as well as butterflies. /VCG Photo

Verbena has longstanding use in herbalism and folk medicine, usually as tea. The plant is commonly used as a natural remedy for insomnia, anxiety, irritability, lethargy, and even depression. /VCG Photo