| Hosta | Blue Diamond |
| Status | registered |
| Originator(s) | Eric Smith/BHHS 1988 |
| Origin | tardiflora x sieboldiana 'Elegans' |
| Size category | medium - large |
| Plant height x width | 30x45 cm (12x18 in.) |
| Leaf length x width | 19x12 cm (7x5 in.) |
| Vein pairs | 10 |
| Leaf color | blue-green |
| Variegation | |
| Leaf | |
| Petiole | |
| Scape | |
| Scape height | 45 cm (18 in.) |
| Flower | lavender |
| Flower length | |
| Fragrant | |
| Flowering period | July |
| Fertile | yes |
| Pod | |
| Ploidy | |
| Patents | |
| Info | TF2x23. 12" tall. Light shade. A nice medium blue with heavy substance. Heart shaped blue leaves. Very heavy substance. Excellent slug resistance. Lavender flowers. Another of the Eric Smith tardianas, this 18" wide clumper is the largest of the tardiana blues. H. 'Blue Diamond' has powdery blue diamond shaped leaves, topped with white striped lavender flowers on 20" scapes in early summer. TF2x23 - One of the larger tardianas; outstanding blue color, great substance. Wonderful blue, diamond-shaped leaves form a large, attractive mound. Heavy substance. Lavender flowers. TF2x23 Blue scale 1. Medium-large mound of intensely blue foliage, excellent slug resistance, lavendar flowers in late July, one of the largest Tardianas |
| Sports | 'Coventry' sport or seedling |
| Progeny | 'Blue Bayou_' = 'Elvis Lives' x PP 'Blue June' = PP x 'Tardiana grex hybrid' 'Blue Lazer' = 'Elvis Lives' x PP |