Schisandra

Set at least one male vine among your females, close enough that insects can carry pollen between them. If you are buying unsexed seedlings, plant several together to raise the odds of getting both sexes, or buy a clonally propagated self-fertile cultivar such as Eastern Prince instead. Schisandra chinensis is dioecious - male and female flowers are borne on separate plants - so a female vine never sets berries unless a male is flowering nearby. This is the most common reason a healthy, well-grown schisandra never fruits.

In early spring, while the vine is still dormant and before the buds begin to move, shorten the sideshoots to within three or four buds of the permanent framework of branches, and cut out any overcrowded, diseased or damaged shoots. Keep the framework itself intact. Judge the timing by the vine rather than the calendar: the window closes once buds start to swell and open, which arrives anywhere from late winter in the mild end of the range to well into spring in the coldest zones. The RHS places Schisandra chinensis in pruning group 12, the moderately vigorous climbers, and calls for pruning it in early spring. Shortening the sideshoots induces more compact growth and encourages flower buds to form on those shortened shoots, while thinning crowded growth opens the vine to light and air. Fruit is carried on old wood, so keeping the permanent framework and its basal buds is what preserves the crop.

Stake each newly planted vine with a 3-foot bamboo cane and slip a grow tube over it, leaving the tube on until the vine has climbed to its trellis wire. Give it a trellis built on the pattern of a grape vineyard. Schisandra is a slow-growing woody vine, so a leader lost to deer browsing costs most of a season's progress; the tube also keeps herbicide spray off the tender stems at the bottom of the row.

Water deeply enough through the growing season that the soil never dries out, and watch it hardest where the vine sits in full sun rather than dappled shade. This is a woodland vine that wants fertile, moist but well-drained soil. It tolerates full sun only where the soil stays consistently moist, and drought stress checks growth on a vine that is already slow to establish.

Pick fully red berry clusters and dry for five-flavor tea. Fully colored fruit has the strongest tea and storage quality.

Go over the vine more than once as the fruit colors, taking only the fully red clusters on each pass. Dry the berries in the sun, or steam them briefly and then sun-dry them, which is the traditional cure for wu wei zi. Berries ripen unevenly within and between clusters, so a single strip-pick either wastes green fruit or leaves ripe fruit to drop. Expect the crop to build gradually from about the third year after planting rather than arriving all at once.