For those who like novelty
plants, pineberry (Fragaria chiloensis x virginiana) is a hybrid
strawberry that produces small, white, highly aromatic fruit with red achenes
(seeds) (Figure 1). While it is marketed as a berry with pineapple-like flavor, not all may
perceive this flavor. Pineberries are slightly larger than a dime and are soft.
In The Netherlands, they are grown in greenhouses. In Chile, white-fruited
berries are grown in tunnels with ultraviolet-filtering plastic to maintain
this characteristic. Plants require full sun, but the fruit tends to turn
pink to blueish-pink with exposure to sunlight. Some nursery sources
recommend cross-pollinating pineberry plants with a typical red-fruited
strawberry, while others do not. Those who have grown pineberry report
that the fruit softens early, but berries are not ready for harvest until the
achenes turn from green to red in May. Compared to typical red-fruited
strawberry cultivars, pineberry plants are considered sparse-bearers. Pineberry
cultivars available from online sources in the United States include White
Albino, White Carolina, White Pine, White D and Wonderful. To maintain the
white-fruit character of the berries, only plants (not seed) should be
purchased.
White-fruited strawberries of Fragaria chiloensis (Chilean strawberry) have been traced
back to Chile where the native peoples, the Picunche and the Mapuche,
cultivated them more than 1000 years ago. Although uncommon, native white
strawberries can still be found in southern Chile today. Although early
explorers documented these strawberries, they were not introduced into Europe
until 1712 when Lt. Colonel Amedee Frézier brought F. chiloensis plants to France. Thereafter,
the Chilean strawberry was naturally pollinated by Fragaria virginiana (red-fruited type known as scarlets).
More recently, Hans De Jongh, a grower in Etten-Leur, the Netherlands obtained
a diseased pineberry plant from a strawberry plant collector in France, who
believed it was from the original cross from the 18th century. After selecting
plants over a six year period, De Johgh released his pineberry cultivar in
2009.
Pineberries should not be
confused with the albino fruit disorder of commonly-grown red-fruited
strawberries. In California, warm weather followed by cloudy and foggy
skies can cause albino fruit with poor flavor. Albinism has also been
associated with excessive nitrogen applications in of red-fruited strawberry
cultivars including, Diamante, Chandler, Sweet Charlie, and Etna.
(by Michelle Warmund, MU Horticulture)
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