How to Fertilize whitecurrant 'Blanka'?
Berry shrub fertilizer twice yearly in spring and early summer period

whitecurrant 'Blanka' · Ribes rubrum 'Blanka'
Grow in a well-drained, fertile soil with a neutral to slightly acid pH. Full sun is preferred, but partial shade is tolerated and plants can be trained against a north wall. Grow as a permanent framework as a bush, standard, cordon or fan. Keep the around the bushes free of other plants. Mulch with well rotted compost, manure or bark particularly on dry soils. See further redcurrant cultivation advice
Berry shrub fertilizer twice yearly in spring and early summer period