Strawberries - Garden Strawberry : Cultivation

Strawberry varieties vary remarkably in size, colour, flavour, shape, degree of fertility, season of ripening, liability to disease and constitution of plant. Some vary in foliage, and some vary materially in the relative development of their sexual organs. In most cases the flowers appear hermaphroditic in structure, but function as either male or female.

For purposes of commercial production, plants are propagated from runners and generally distributed as either bare root plants or plugs. Cultivation follows one of two models, annual plasticulture or a perennial system of matted rows or mounds. A small amount of strawberries are also produced in greenhouses during the off season.

Fragaria x ananassa Gariguette a tasty cultivar grown in southern France.
Fragaria x ananassa Gariguette a tasty cultivar grown in southern France.

The bulk of modern commercial production uses the plasticulture system. In this method, raised beds are formed each year and covered with black plastic, which prevents weed growth and erosion, under which is run irrigation tubing. Plants, usually obtained from northern nurseries, are planted through holes punched in this covering. Runners are removed from the plants as they appear, to encourage the plants to put most of their energy into fruit development. At the end of the harvest season, the plastic is removed and the plants are plowed into the ground. Because strawberry plants more than a year or two old begin to decline in productivity and fruit quality, this system of replacing the plants each year allows for improved yields and more dense plantings. However, because it requires a longer growing season to allow for establishment of the plants each year, and because of the increased costs in terms of forming and covering the mounds and purchase plants each year, it is not always practical in all areas.


The other major method is to maintain the same plants from year to year. The runners of established plants should be allowed to root in the soil adjoining the plants, which should, therefore, be kept light and fine, or layered into small pots as for forcing. As soon as a few leaves are produced on each the secondary runners should be stopped. When the plants have become well-rooted they should at once be planted out. They do best in a rather strong loam, and should be kept tolerably moist. The ground should be trenched 50-100 cm deep, and supplied with plenty of manure, a good proportion of which should lie just below the roots, 25-30 cm from the surface. The plants may be put in on an average about 50-60 cm apart.

source : hydroponicsearch