Vaccinium corymbosum – Blueberry Northern Highbush

$6.00$15.00

Vaccinium corymbosum ( Blueberry Northern Highbush) is a deciduous, fruiting plant that is native to the colder areas of Canada & the United States. This species of Blueberry has become very significant as a world food crop and has become naturalised as far as New Zealand, Japan & Europe. This is very often the species you will find at the supermarket.

Suitable for Sub-Arctic, Cold and Temperate climates.

Vaccinium corymbosum ( Blueberry Northern Highbush) is a deciduous, fruiting plant that is native to the colder areas of Canada & the United States. This species of Blueberry has become very significant as a world food crop and has become naturalised as far as New Zealand, Japan & Europe. This is very often the species you will find at the supermarket.

Blueberries are well known as a superfood. They are packed with nutritious goodness like Vitamins C & K and are a great source of antioxidants, dietary fibre, iron & manganese.

The Northern Highbush Blueberry is often found growing on the shores of rivers or lakes, in forests & woodlands, bogs and even swamplands which is where we can assume it got one of its other less common names the Swamp Blueberry. Other common names that have been given to the Blueberry include High Blueberry, Blue Huckleberry & Tall Huckleberry. The ‘Highbush’ part of the name comes from the quite tall height they can grow to in comparison to the ‘Lowbush‘ variety that often doesn’t get as tall as ½ metre (2 feet).

Suitable for Sub-Arctic, Cold and Temperate climates.

For other Vaccinium species, check out Blueberry Wild Lowbush & Cranberry.

Growth

Vaccinium corymbosum is a deciduous woody shrub that can grow up to 3.6 metres / 12 feet in height and width. This bush has several stems that grow from its base and dark green leaves that grow to around 5 cm/2 inches long. In autumn, these leaves turn into some stunning shades of red, orange, and burgundy.

The flowers of this species look like gorgeous little bells hanging from the branches, they are white, often with a slightly creamy-pinkish tinge. The fruit can range in size anywhere from 6.4-12.7mm (14-to-12-inch) in diameter.

Although this plant can self-pollinate, it is preferable to have at least 2 plants to achieve bountiful crops in the future. The roots are fairly shallow and prefer acidic soils, they will appreciate mulching around their base.

Note: Germination instructions can be found in the ‘Germination Instructions Tab’ below. Upon purchase you will receive these detailed instructions via email so that you have a permanent record.

 

FAMILY:

Ericaceae

CLIMATE:

Sub-Arctic, Cold, Temperate.

TEMPERATURE RANGE:

-40°C to -40°C / 35 to 95°F

SOIL TYPE:

Well-draining, sandy loam that is high in organic matter. Blueberries don’t do well in clay soils.

LOCATION:

Full Sun

HEIGHT:

Up to 3.6 metres (12 feet)

WIDTH:

Up to 3.6 metres (12 feet)

pH:

4.0-5.0

GROWTH TYPE:

Bisexual, Deciduous bush.

WATER REQUIREMENTS:

Medium.

POLLINATION:

Pollinated by Bees & other insects. Although self-pollinating, more than 1 plant is preferred.

MATURITY:

2-4 years.

GERMINATION RATES:

60-80%

GERMINATION TIME:

Cold Stratification – 3 months and then 6-12 weeks germination

GERMINATION DIFFICULTY:

Medium to Hard. Cold stratification & patience required.

SEEDS PER GRAM:

Approximately 300

MEDICINAL QUALITIES:

Yes.

WEED POTENTIAL:

No.

EDIBLE:

Yes.

SEED STORAGE & VIABILITY:

Cold Storage at 4°C (Fridge) up to 2 years.

 

FACTS ABOUT VACCINIUM CORYMBOSUM ( Blueberry Northern Highbush )

Blueberries were first introduced to Australia in the 1950s.

Blueberries are well known to have many health benefits. What is a little less known is that the berries are not the only part of this plant that is used medicinally, the leaves are also used in teas. Just to name a few of the benefits of blueberry plants, they are said to be helpful with some brain disorders, at lowering cholesterol, and also boosting the immune system.

Weight 0.5 kg
Dimensions 26 × 16 × .5 cm
Quantity

20 Seeds, 50 Seeds, 100 Seeds, Seedling

Germination Instructions

HOW TO GROW VACCINIUM CORYMBOSUM (Blueberry Northern Highbush)

 

NOTE: Blueberry Northern Highbush plants will rarely fruit in warmer Sub-tropical and Tropical gardens and are recommended for Cold and Temperate climates.

This species needs between 700-1200 chill hours in order to stay dormant and produce plenty of fruit. A chill hour is an hour below 7°C/45°F.

Step 1

Half fill a plastic zip-lock bag with a pre-moistened seed raising mix, sphagnum moss or peat moss (make sure none of these are too wet – if you can squeeze water out of it with your hand, it is too wet!), write the date on the bag, mix in the seeds loosely and place bag into the fridge for 12 weeks.

This process is called ‘cold stratification’ and is done to trick the seeds into believing they are going through a cold winter as they would in their natural habitat.

The seeds may not germinate if they have not been put through this process or germination rates will be lower & can take much longer.

Step 2

After 12 weeks, sow each seed about 3mm into seed trays of seed raising soil that is rich in organic matter. Moisten with a spray bottle to avoid over watering and then move into a well-lit but shaded location. A well-lit location is important as light affects germination of Vaccinium, however beware if placing in a sunny location as soil can dry out quickly.

Optimal temperature for germination according to studies is 18°C/64.4°F, however within the temperature range of 15-20°C/60-70°F is acceptable.

Temperatures above 27°C/80°C can cause seeds to go back into a dormant state but have been shown to have germination restart once temperatures dropped and stabilised back below 22°C/72°F. If your temperatures are much lower at the time of year you are germinating blueberries, a heat mat may be necessary.

You can cover tray with plastic wrap to keep warmth and moisture inside the tray. Seeds should start to germinate between 6-12 weeks and can be sporadic, so don’t give up on any that haven’t sprouted until after 12 weeks!

Step 3

Once seedlings are looking strong, they can be moved to a sunnier location but be careful doing this in warmer months. If you need to do this, do it slowly so that seedlings have the time to adjust.

Seedlings can be transplanted once they reach 3 inches in height into a good quality, nutrient rich soil. Blueberries need an acidic soil to thrive, anywhere between 4-5 is acceptable, with an ideal of 4.7.

Keep in a small-medium pot until after first winter, so they can be moved inside if needed to protect them from frost and cold winds at this time.

Seedlings can be fertilised monthly with a weak organic fertiliser.

Step 4

Transplant to final position after last frost has passed, when the plants are between 1-2 years old. If planting more than 1, space 1.5m apart/5 feet.

Again, be aware not to bring the soil to a too alkaline level. Using organic matter such as compost, food scraps, coffee grounds & manure are good organic ways of improving your soil.

During winter plants will often die back and wait until spring to regrow. Blueberries will survive severe cold.

Additional water advised when fruiting which is usually around early to mid-summer.

Blueberry plants usually begin fruiting at 2 years of age or during their second full growing season.

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