How to plant and cultivate a juniper (juniperus)?

How to plant and cultivate a juniper (juniperus)?

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Characteristics of juniper

  • Type: shrub
  • Height: 30 to 60 cm, 60 to 80 cm, 80 cm to 1 m, 1 to 2 m, 2 to 5 m, 5 to 10 m, 10 to 20 m, 20 to 50 m
  • Fruit name: Juniper berry
  • Desired exposure: sunny, semi-shaded
  • Type of soil: well drained, dry, stony, acidic
  • Foliage: obsolete or persistent
  • Interview: easy to maintain
  • sanitizer: no
  • diseases: rust, aphids
  • variety: Juniperus blue arrow, juniperus chinensis, juniperus rigida, juniperus pfitzeriana…

Origins and peculiarities of juniperus

The juniper (juniperus) is aconiferouswhich is part of the cupressaceae family. Small creeping shrub or large tree with a masterful port, the juniperus is a hardy which supports all climates and all temperatures. Dozens of varieties with very changing colors and very different shapes populate all continents: some species grow like real trees and can reach tall sizes, while other junipers are small shrubs; Similarly, if some juniperus have a columnar port, others have a rounded, others conical, others spread out or even creeping! Finally, the juniper needles are either pointed or in the form of scales.

Generally, the small species of junipers are mainly used to garnish the borders or decorate terraces (the juniperus will then be grown in pots). Large species can be planted in isolation in a garden, in beds but also in alleys.

The fruits of the juniperus, the famous juniper berries, go from green to black, black-blue or brown when mature.

Uses of juniperus

In addition to its certain ornamental qualities, the juniperus is a conifer known for:

  • Its wood, which can be red, brown, pink or yellow in color; very fragrant during cutting, juniper wood is used in cabinet making and carpentry because it never rots.
  • Its fruits, juniper berries, used in cooking and to make juniper alcohol.
  • Cade oil (extracted from cade juniper), for veterinary use.

Juniperus plantation

Planted in autumn, the juniperus does not require a rich, stony or sandy soil but sufficiently well drained to avoid root rot in case of stagnant water. Plant your juniperus preferably in a very sunny place, even if a semi-shaded area can suit it.

Juniperus maintenance

Rather slow growth whatever the variety, the juniper does not require any particular maintenance: the first two years after planting, remember to water it outside of frost periods, and mulch it in winter. Also remember to bring your juniperus some coniferous fertilizer in the spring (during the first 3-4 years).

The juniperus supports as much hot weather as frosts, which makes it a tree or a decorative shrub could not be more simple to grow.

Juniperus size

It should be pruned in early summer so that it takes advantage of the heat of the season it prefers to grow more. Attention: only prune the twigs in order to give a nice shape to your tree, but never old wood or the top, this could cause the death of the tree!

Juniperus diseases

The juniper is particularly sensitive to the invasion of insects (red spiders, caterpillars, mealybugs ...). So watch out for the slightest spider web or change in color of its leaves, which is a sign that parasites are taking over.

The caterpillar for example digs galleries in its woods which weakens it and could allow the fungi to settle. Chemical, but also natural treatments such as ladybugs, eaters of insects, can overcome unwanted.