Cornus kousa ‘Greensleeves’
Callicarpa dichotoma
Diervilla Kodiak® Series
Pycnanthemum muticum
Helianthus angustifolius ‘First Light’
Tiarella cordifolia ‘Running Tapestry’

For descriptions see https://www.yewdellgardens.org/theodore-klein-plant-awards/