Thursday, January 6, 2011

Blueberry Facts

Fruit Fact Sheets

Fruit
Blueberry

Vaccinium sp

They have the highest antioxidant levels of any fruit and high in vitamin C. They are expensive in the shops, but are relatively easy to grow in the home garden. They are a relative of the rhododendron and produce delicate bell like pink to white flowers. In autumn the leaves turn red, orange and copper, as well as edible they are highly ornamental. They require a good winter chilling, and although self fertile, will produce larger berries when planted with other varieties.

When to Plant

Best planted during the cooler seasons, preferably during winter. Plant deeply that is above the soil line of the pot, (long stem planting), this ensures good root development and protects the root ball from drying out. Add plenty of organic material to the soil before planting.

Position

The plant originates in North America so won’t cope well with strong Australian sun, so best planted in dappled shade.


Soil Preparation

They require a soil pH of 4.5-5.5, that is an acid soil, although the hybrids are more forgiving of an alkaline soil. If they are mulched with pine needles that will reduce the pH of an alkaline soil.

Care

Blueberries have a fibrous root system, so it is very important that the roots are not allowed to dry out. Mulch well with acidifying mulches, such as oak leaves or pine needles.

Pruning
Do not allow them to produce fruit for the first two years, so that the plants energy is put into the roots and stems. After 3-4 years the stems become unproductive and should be pruned at ground level or cut to a vigorous side shoot. Keep the centre of the bush open and cut out any week, weeping or dead wood.

Harvesting

They yield 3.5 kg per bush, between December and March.

Common Problems

The blueberry suffers from very few pests or diseases. Birds will eat the fruit, so bushes are best netted to protect the harvest.

Varieties
Bluerose-tall and extremely prolific, harvest Dec-Feb 2.4m H x 2m W
Reveille-A smaller bush, delicious and sweet, harvest Dec-Jan 1.8m H x 1.5m W

Brigitta- Has masses of large, sweet, pale blue berries ripening around the same time. Yield can be 6-9 kg when mature. Harvest Jan to Feb. 2m H x1.5m W

Northland'-has a very dark flesh with a wild-berry flavour becoming sweeter the longer they hang on the bush. Very hardy to extremes of heat and cold.

Nellie Kelly- is a delightful, evergreen bush producing pink flowers during the winter and delectable fruit in late spring and summer. The bush is frost tolerant and needs to be planted in areas where overnight temperatures drop below 5C degrees during winter as this helps to promote the flowers. 1m H x 1m W


Sources

Clive Blazey and Jane Varkulevicius The Australian Fruit and Vegetable Garden

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