# The Soft Fruit Plants (Scotland) Order 1991, Paragraph 4


The standards of purity and health for Standard grade blackcurrant bushes shall be–
Purity: 99.5%
Health:
(a) 99% free from Big Bud Mite, Reversion and other discernible virus diseases;
(b) substantially free from American Gooseberry Mildew;
(c) reasonably free from other pests and diseases.

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Source: https://www.legislation.gov.uk/uksi/1991/1905/schedule/3/paragraph/4 (the official version)
Page: https://openlegislation.uk/soft-fruit-plants-scotland-order-1991/schedule-3/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.