does polygonum persicaria smell
Details. Persicaria Superba is a fine border plant, a semi-evergreen perennial that produces clusters of small, light pink flowers throughout summer and into autumn. The flowers are clustered in a cylinder shape on the top of tall flower spikes and the leaves are quite large, broad and bright green.etails. Persicaria Superba is a fine border plant, a semi-evergreen perennial that produces clusters of small, light pink flowers throughout summer and into autumn. The flowers are clustered in a cylinder shape on the top of tall flower spikes and the leaves are quite large, broad and bright green.