Dahlia 'Otto's Thrill' Bulbs

Royal Horticultural Society Award of Garden Merit

'Otto's Thrill' is a celebrated dinnerplate dahlia, beloved by gardeners, florists, and wedding planners for its exceptional beauty and commanding presence. Reaching a mature height of 36 to 48 inches, this classic variety blooms from late summer into early fall, often until the first frost in ideal conditions. The enormous 8- to 10-inch double flowers are borne on strong stems, showcasing broad, symmetrical petals in soft shades of pink. These romantic blooms are perfect for dramatic monofloral bouquets or as showstoppers in mixed arrangements. Wait until the flowers are nearly fully open before cutting, and rest assured that harvesting them will encourage even more blooms.

'Otto's Thrill' is a tender perennial (Zones 9-11) with a clump-forming, upright habit. It's a quintessential choice for cottage gardens, ideal for the back of borders or beds, and equally striking in large containers. Its tall stature and substantial blooms may require staking or caging for added support, particularly in cutting gardens where it truly shines.

These dahlias thrive in sunny locations with rich, porous soil that drains freely while retaining moisture for healthy roots. Amend heavy clay or sandy soils with organic materials like peat moss or ground bark to improve soil structure. Water thoroughly at planting and maintain consistent moisture throughout the growing season, taking care not to overwater. Pinch stems back at 8 to 10 inches tall and prune taller growth to encourage bushy plants and abundant blooms. Fertilize in early spring and late summer, mulch to retain soil moisture, and divide tubers in the fall for continued success.

Plant tubers in warm spring soil after frost danger has passed, spacing them 18 to 24 inches apart and planting 3 inches deep. For an early start, pot tubers indoors 4 to 6 weeks before the last frost date in 5- to 8-inch pots with potting mix. Transplant them outdoors once frost is no longer a threat.

NOTE: In Zones 3-7, lift and store tubers indoors before frost, keeping them in dry peat moss or vermiculite at 50°F. Alternatively, enjoy this timeless dahlia as an annual for unforgettable summer and fall blooms in any garden.