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'Giotto' is an erect herbaceous perennial to 1.5m in height, with divided foliage and erect spikes of deep blue and violet, semi-double flowers 7cm across, with pale brown eyes
'Margaret' is an erect, vigorous perennial, branching and floriferous. Flowers are bright mid-blue, with large white eyes which may show a blue splash
'Min' is an herbaceous perennial to 2m in height, with erect racemes to 90cm in length, composed of semi-double, purplish-white flowers, strongly tinged violet at the edges
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Delphinium...Delphinium publications...The RHS is the International Cultivar Registration Authority for Delphinium...
The RHS publishes the Delphinium Register Cumulative Supplement 1996...Subsequent annual supplements are published in the Yearbook of the Delphinium Society...Addendum to a Tentative Check-list of Delphinium Names...
Delphinium...Black blotch is a bacterial disease that can affect Delphinium species and monkshood...Black blotch of Delphinium has not been studied extensively, but it is thought that the bacterium can overwinter on old plant debris in the soil
Delphinium...9th Delphinium Supplement...9th Delphinium Supplement (24kB pdf
Delphinium...5th Delphinium Supplement...5th Delphinium Supplement (145kB pdf
Delphinium...12th Delphinium Supplement...12th Delphinium Supplement (233kB pdf
Delphinium...10th Delphinium Supplement...10th Delphinium Supplement (132kB pdf
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