Penstemon 'Garnet' (syn. P. ‘Andenken an Friedrich Hahn’) is a bushy, vigorous perennial with smooth, narrow, dark green leaves and small, tubular, deep wine‑red flowers borne in erect spikes from early summer to late autumn.
Full sun; well‑drained soil. Deadheading may prolong flowering.
Softwood cuttings in early summer or semi‑ripe in mid‑summer. Divide in spring. Problems: powdery mildew, rust, leaf spots, Southern blight; slugs/snails on young plants.
Beds, borders.
| Height | 1–3 ft. |
| Spread | 1–3 ft. |
| Light | Full Sun |
| Moisture | Dry to Medium |
| Bloom Time | Summer, Fall |
| Flower Color | Red |
| Type | Perennial |
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