Practical
Plants

Juniperus tetragona

a perennial woody evergreen member of the Juniperus genus in the family Cupressaceae.

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Taxonomy and growth

Life cycle
perennial
Foliage
evergreen
Woodiness
woody
Fertility
Self sterile, Wind
Flower type
dioecious
Pollinators
Wind

Uses

Edible uses

This section contains historical Plants For A Future notes marked noncommercial.

Fruit - raw or cooked[2]. A sweet resinous flesh[4]. The fruits are about 12mm in diameter[5].

Plant part
Fruit

Material uses

This section contains historical Plants For A Future notes marked noncommercial.

Wood - brown, hard. Used for construction etc[7].

Product or use
Wood

Ecology and functions

Ecosystem niche
Canopy

Environment

Range
South-western N. America - Texas to Mexico.
Habitat
Pine-oak forests in mountains, to 4500 metres in Mexico[4].
Light
full sun
Shade tolerance
no shade
Water
moderate
Hardiness
Zone 8+
Soil textures
sandy, loamy, clay
Soil pH
acid, neutral, alkaline, very alkaline
Drainage
well drained
Tolerances
drought
Tolerates Nutritionally Poor Soil
No
Drought
tolerant

Propagation

This section contains historical Plants For A Future notes marked noncommercial.

The seed requires a period of cold stratification. The seed has a hard seedcoat and can be very slow to germinate, requiring a cold period followed by a warm period and then another cold spell, each of 2 - 3 months duration[8][9]. Soaking the seed for 3 - 6 seconds in boiling water may speed up the germination process[3]. The seed is best sown as soon as it is ripe in a cold frame. Some might germinate in the following spring, though most will take another year. Another possibility is to harvest the seed 'green' (when the embryo has fully formed but before the seedcoat has hardened). The seedlings can be potted up into individual pots when they are large enough to handle. Grow on in pots until large enough, then plant out in early summer. When stored dry, the seed can remain viable for several years[1]. Cuttings of mature wood, 5 - 10cm with a heel, September/October in a cold frame. Plant out in the following autumn[1][8]. Layering in September/October. Takes 12 months[8].

Cultivation

This section contains historical Plants For A Future notes marked noncommercial.

Succeeds in most soils if they are well drained, preferring a neutral or slightly alkaline soil[1] and succeeding on chalk[6]. A drought tolerant plant once established, succeeding in hot dry positions[6]. This species is not very hardy in Britain[1]. Dioecious. Male and female plants must be grown if seed is required.

References

  1. F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00

    ↩1↩2↩3↩4

  2. Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976-00-00

    ↩

  3. Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981-00-00

    ↩

  4. Pesman. M. W. Meet Flora Mexicana. Dale S. King. Arizona. 1962-00-00

    ↩1↩2

  5. Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972-00-00 ISBN 0-486-20459-6

    ↩

  6. Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5

    ↩1↩2

  7. Usher. G. A Dictionary of Plants Used by Man. Constable 1974-00-00 ISBN 0094579202

    ↩

  8. Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948-00-00

    ↩1↩2↩3

  9. Rushforth. K. Conifers. Christopher Helm 1987-00-00 ISBN 0-7470-2801-X

    ↩

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