Word search

This word search comprises words associated with penstemons. They are listed below; in the grid they may be read across, backwards, up, down or diagonally. Letters may be shared between words. Erroneous or duplicate words may appear in the grid, but there is only one correct solution. After the listed words are found, there are 10 letters remaining; arrange these to make this week’s KEYWORD. PENSTEMON BEARDS TONGUE BORDERLINE HARDY ALPINE PENSHAM PERENNIAL PINK PURPLE RED RUBY STAMENS THROAT WHITE YELLOW