a plant with trumpet-shaped flowers (= wider at one end) that twists around other plants as it grows, sometimes grown for its flowers and sometimes growing wild as a weed (= a plant that is not wanted)

Trailing blue convolvulus blends well with the softer colours of the herbs. 蔓生的蓝色旋花与草药柔和的颜色很好地融合在一起。

The path became overgrown with honeysuckle, convolvulus, and brambles. 这条路被金银花、旋花和荆棘所覆盖。