All Blue (Blue)

Parentage – Unknown¹

Breeder – Heirloom variety suspected to have originated in the US or UK (Scotland) in the late 19^th century; several synonyms names likely existed throughout history¹

Maturity – Late season^1,2

Usage – Fresh; specialty tablestock¹

Plant – Tall, vigorous, semi-erect habit with blue purple stems^1,3

Leaves – Dark green¹

Flowers –Blue with blue-purple longitudinal stripes; yellow orange anthers¹

Tubers – Oval to oblong, deep purple netted skin^1,2,3; many deep eyes evenly distributed on tubers with less prominent eyebrows; purple streaked with white flesh and a characteristic white vascular ring^1,3; low specific gravity¹; medium to long tuber dormancy^1,2

Strengths – Popular variety for specialty markets; very high in antioxidants (especially in the skin); drought tolerant; moderately resistant to late blight, hollow heart, secondary growth^1,3, shatter bruise, powdery scab and potato viruses A, M, X and S¹

Weaknesses – Susceptible to potato leafroll virus, potato virus Y, bacterial ring rot, black leg, golden nematode Ro1 and common scab¹

References: ¹https://www.tuckertaters.com/p_d_all_blue.html ²http://www.woodprairie.com/product/organic-blue-seed-potatoes/all-organic-prairie-products ³https://www.mainepotatolady.com/productcart/pc/viewCategories.asp?idCategory=21 ⁴https://www.burpee.com/vegetables/potatoes/potato-all-blue-prod000845.html

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Last Revised: 5/8/19

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