Building
the Trellis For Trailing Berry Plants:
Plant between December and April. Should the plants arrive before
you are ready to set them, store them in a cool place (34 to 40
degrees) and do not allow them to dry out.
Because
blackberry and raspberry plants live for many years, the trellis
posts should be treated with preservatives and No. 9 gauge wire
should be used. Set 6 ½ to 7-foot posts 1 ½ or 2
feet in the ground 10 to 20 feet apart. Use 3 strands of trellis
wire, with the 1st strand at the top and the other strands 18
inches apart.
Setting
the Plants:
Plants should be placed in sunny spot. “Trailing”
type plants should be set 6 – 8 feet apart in 8 –
12 foot width rows. Set the plants 2 inches deeper than grown
in the nursery. Plant erect blackberries 3 feet apart in 12-14
foot wide rows. A pH of 6.0 – 6.5 is best for these berries.
The hole must be large enough to accommodate all of the plants
roots in a natural position.
Training
and Pruning Erect Vines:
The year of planting, canes produced by the plants will be semi-erect.
Contain these semi-erect canes to the row area and do no prune
them. They will provide some fruit the following year. New canes
produced the 2nd and succeeding seasons will be erect. They should
be cut to a height of 40-42 inches to encourage lateral shoot
development. This practice reduces excessive height of the cane
and increases the stability of the hedge. Several prunings may
be necessary. During the dormant season, the dead canes that provided
fruit the previous summer should be pruned out.
Training
and Pruning Trailing Vines:
These plants produce biennial canes which grow one season and
flower, fruit and die the second season. New canes are produced
each season, so fruiting canes are present annually after the
year of planting.
First year pruning: Little pruning is necessary for brambles the
year they are planted. Place a mulch of pine straw, hay, newspaper
or plastic on the ground around the plants in the summer time
to help keep moisture in the ground.
Second Year Pruning: After the fruiting season, remove the old
canes that are in the process of dying. Tie the new canes of trailing
blackberries to the trellis and tip them 6 inches above the top
wire to encourage branching. During the following winter, train
the canes in a fan pattern away from the crown and place ties
where canes cross each wire.
Fertilization:
Fertilize berries twice a year in most situations. Trailing blackberries
and Dorma Red Raspberries should receive about 2 ounces of 10-10-10
in April and July of the first year. Scatter the fertilizer evenly
over a circle 2 feet in diameter centered on the plant. Erect
blackberries and raspberries are usually planted closer together,
so a banded fertilizer application can be made from the start.
The first year apply one pound of 10-10-10- per 18 feet of rows
in April and one pound per 36 feet of row in June. For all berries
in future years, apply one pound of 10-10-10 per 9 feet of row
in early March and one pound on 10-10-10 per 18 feet of row in
June in a band 2 feet wide.
Harvesting:
The berries are ripe and are at their peak of flavor when they
lose their high glossy shine and turn slightly dull. Harvesting
is best when the berries are juiciest, during the late morning
hours after the dew has dried.
General
Requirements:
Watering: Water brambles during dry parts of the season. Apply
enough water to wet the soil at least 8 to 10 inches below the
ground surface. This is particularly important for raspberries.
Mulching:
Brambles will benefit from mulching, which prevents extremes in
soil temperatures and helps to conserve moisture.
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