Gooseberry bushes provide sweet, tart berries for jams, jellies and snacking. The bushes respond to annual pruning with prolific harvests. American gooseberries (Ribes hirtellum) and European gooseberries (Ribes uva-crispa) both grow in the U.S., but European gooseberries grow poorly in some areas because of their vulnerability to powdery mildew. Hardy in U.S. Department of Agriculture plant hardiness zones 3 through 8, gooseberries grow in multistemmed clumps and bear grape-sized berries singly or in groups of two or three. Most varieties carry long, sharp spines, so take care when pruning or harvesting the bushes. Cornell University warns that gooseberries are banned in some areas of northern states, because the plants can carry a disease called white pine blister rust. Check with your local agricultural extension or nursery to see if gooseberries can be grown in your area.
Things You'll Need
- Thick leather gloves
- Rubbing alcohol
- Pruning shears
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Put on thick leather gloves. Wipe the pruning shear blades with rubbing alcohol to sterilize them.
Prune only spindly, dead and damaged stems on one- to three-year old gooseberries, allowing four or five healthy canes to develop yearly. Prune in early spring before growth begins. Prune the stems at ground level, and sterilize the pruning shears again after use.
Prune gooseberries four years old and older in early spring, pruning the weakest and the oldest stems at ground level. The oldest stems are thicker and darker than the others. Leave nine to 12 stems per bush. Alternatively, prune all the stems at ground level, which encourages gooseberries to produce large fruit.
Prune gooseberry stems suffering from powdery mildew if they become infected during the growing season. Powdery mildew is a fungal infection that causes white, powdery patches, poor growth and death. Prune 3 inches below the infected area, cutting just above a leaf node. Leaf nodes are raised bumps on stems where new growth sprouts. Put gooseberry stems and fruit suffering from powdery mildew in a sealed plastic bag in the trash.