Doesn’t seem any whiter than, or different to, A.napellus subsp.vulgare ‘Albidum’.

Genus: ACONITUM
Variety: NAPELLUS
Cultivar: ‘DEGENHARDT’S WHITE’
Plant family:
Hardiness zone: H7(below -20C)
Height: 

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Other data

Foilage colour
Foliage season
Flower colour
Flowering season
Soil moisture
Shadiness
Hardiness

Plant ID 7244