Growing Green: Perennial Plant of Year is Solomon's seal
The Perennial Plant of the Year program began in 1990 to showcase a perennial that is outstanding among its competitors. The selection process is quite simple. PPA members vote for the Perennial Plant of the Year each summer.
Nominations generally need to satisfy the following criteria:
Suitability for a wide range of climatic conditions.
Relative pest and disease resistance.
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