Ultimatum Dahlia
Description
Ultimatum is a beautiful dahlia variety hybridized by William Keynes & Son in 1865.
Specifications
| Hybridizer | William Keynes & Son |
|---|---|
| Year introduced | 1865 |
| Country of origin | UK |
How to grow Ultimatum
Ultimatum is a dahlia. Plant tubers 12–18 inches apart in full sun after the last frost. Pinch when plants reach 12 inches tall to encourage bushier growth and more blooms.
Harvest & vase life
Dahlia-form dahlias like Ultimatum harvest dahlias when blooms are three-quarters to fully open. With clean cuts and fresh water, most varieties last 4–7 days in the vase.
Similar dahlia varieties
Frequently asked questions
Who hybridized Ultimatum?
William Keynes & Son, introduced in 1865.
Is Ultimatum good for cut flowers?
Yes. Dahlias are among the most popular cut flowers for home and market growers. Expect 4–7-day vase life with proper hydration.