Currant

Currants are one of the few fruiting plants that will set a real crop in partial shade. Most fruit demands full sun; currants produce well under dappled light or against a north-facing fence where the morning sun reaches them but the afternoon heat does not. That makes them useful in small gardens where the sunny spots are already spoken for, and it makes them one of the most underplanted fruits in North American gardens.

Before you plant black currants specifically, check your state's restrictions. Black currants are an alternate host for white pine blister rust, a fungal disease that can kill five-needle pines, and planting them is illegal or restricted in many states with commercial or ecologically significant white pine populations. Red and white currants are rarely restricted — the disease does not spread from them as readily — but confirming local regulations before buying plants can save you the trouble of removing an established shrub later.

Red currants and black currants taste different enough that they are essentially different crops. Red currants are tart and bright — they make excellent jelly and are often used in Scandinavian and northern European cooking as a counterpoint to rich meats. Black currants have a deeper, more musky flavor with a strong aroma; they are prized for cassis liqueur and for preserves, but some people find the flavor too intense to eat fresh. White currants are a pale variant of red currants, milder and slightly sweeter.

Plant currants in early spring as bare-root stock or from containers. They prefer soil that stays cool and does not dry out completely in summer — a two- to three-inch layer of wood chip mulch helps retain moisture and moderate soil temperature. Currants are self-fertile and do not need a second plant to set fruit, though yields tend to increase slightly when multiple varieties are planted together.

Pruning matters for long-term productivity. Currants fruit best on one- to three-year-old wood; canes older than four years tend to produce smaller, sparser fruit. In late winter, cut out the oldest canes at ground level and leave six to ten of the younger, more vigorous ones. The plant will send up new shoots each year to replace what you remove.

Powdery mildew is the primary disease concern, particularly on black currants in humid climates. It shows as white dusty patches on leaves and young shoots, usually appearing in midsummer when nights are warm and humid. Good air circulation helps — do not crowd plants, and prune out congested growth in the center of the bush. Resistant varieties such as Ben Sarek and Consort tend to hold up better than older black currant cultivars in areas with consistent summer humidity.