Rubia cordifolia varherbacea

例句：

1. 1.The vibrant purple flowers of Rubia cordifolia are a sight to behold.
   紫花杜鹃的鲜艳紫色花朵令人赞叹。
2. 2. In the spring, Rubia cordifolia blooms in full glory, adding a touch of color to the landscape.
   春天，紫花杜鹃盛开，为景观增添了一抹色彩。
3. 3. The herbaceous nature of Rubia cordifolia makes it an ideal choice for gardens with a low maintenance requirement.
   紫花杜鹃的草本特性使其成为低维护需求花园的理想选择。