What is the hardiest delphinium?
What is the hardiest delphinium?
Delphinium elatum
The New Millennium series of Delphinium elatum are the best of the elatum hybrids. They are overall the hardiest Delphiniums with the strongest stems, which are tightly packed with blooms, each heavily petaled. Staking may not be necessary unless you plant in a windy site.
Is delphinium an annual or perennial?
Delphinium is a perennial favorite as the tall spikes of blue flowers in the background of a stately English or cottage garden. The modern delphinium flower may be a single or double rosette in popular blue or red, pink, white, violet and yellow.
Where is the best place to plant a delphinium?
For best results grow delphiniums in moist but well-drained soil in full sun. Delphiniums are tall plants, so do best at the back of a sunny border. Avoid windy spots, as wind can blow the plants over.
How hardy are delphiniums?
Delphiniums at a glance Delphinium is a hardy herbaceous perennial whose common name is Larkspur. This means they are tolerant of our winters hardy down to H5, (explanation of frost hardy) and late autumn the plants die back completely to bare earth and re grow each spring.
What to do with delphiniums when they finish flowering?
Cutting back after flowering Early-flowering perennials such as geraniums and delphiniums are cut to near ground level after flowering to encourage fresh foliage and late summer flowering. These are then cut back again in autumn or spring.
What do you do with delphiniums in the winter?
overwintering. Delphiniums are hardy perennials so can survive the winter and return the following year. They can be damaged by waterlogged soil – if delphiniums sit wet in their dormant winter season, they can die. Make sure the soil is free-draining and doesn’t become compacted and soggy.
Is it OK to touch delphinium?
This toxic plant is dangerous, especially the younger parts of the plant. If consumed by humans, it will cause severe digestive issues, and if touched, it can cause severe skin irritation. All parts of the plant contain poisonous chemicals, including various diterpenoid alkaloids like methyllycaconitine.
