Mulching with sawdust or aged leaves or other organic material is helpful. As always, fresh sawdust requires additional nitrogen fertilizer.
Provide water during dry spells.
A healthy, mature bush will have 9-12 canes. Remove excess canes from the center to improve light and air circulation. Also remove canes that are low to the ground, unless you wish to propagate by layering. Branches lying on the ground will form roots and may be removed and transplanted.
White currants are actually a type of red currant.
The currants in the Fruit Garden are: