Dash™ Crimson Dianthus

Dash™ Crimson is an upright Sweet William with fragrant crimson flowers and a larger habit than the compact Dart selections. PanAmerican Seed identifies the Dianthus barbatus product as PAS889166 and lists a mature size of 15–20 inches high by 12–14 inches wide, with hardiness zone 6a–6b. ## Garden use The fragrant flower clusters suit a small border, a premium patio container or a cut-flower planting. The supplier describes Dash as well-branched and moderately vigorous, with good garden performance and no staking needed. Sweet William is a biennial or short-lived perennial that is often grown as an annual, so local conditions and planting schedule affect how long the display lasts. [PanAmerican Seed](https://www.panamseed.com/products/022506561001353/dianthus-dash-crimson/) · [Ball Seed](https://info.ballseed.com/PlantInfo/?phid=022506561001353) ## Growing conditions Plant in sun in soil that drains well; loam and sand are listed for the species. NC State Extension notes that partial shade can help in hot-summer climates and that poor drainage can cause crown rot. Ball lists medium water and flowering windows from early spring through winter; this is a broad supplier timing range, while actual garden bloom depends on local weather and planting. [RHS](https://www.rhs.org.uk/plants/105495/dianthus-barbatus/details) · [NC State Extension](https://plants.ces.ncsu.edu/plants/dianthus-barbatus/common-name/sweet-william/) ## Maintenance Water moderately and avoid keeping the crown wet. Deadhead spent flowers as needed to tidy the display and reduce seed set. The branching habit is described as self-supporting in the landscape, so staking is not normally required.