Weigelia n. : A hardy garden shrub (Diervilla Japonica) belonging to the Honeysuckle family, with white or red flowers. It was introduced from China.

Example:
When is the correct time to prune back our Weigelia and Aster bushes?

Taxonomy
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Defination from the web:
weigelia shrubs. Weigelia shrubs are among the most popular and most beautiful ground cover for gardens and borders. They are very easy...