Ligustrum ovalifolium

Ligustrum ovalifolium
California privet
Oval-leaved privet
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Oleaceae
Tribe: Oleeae
Genus: Ligustrum
Species: L. ovalifolium
Binomial name
Ligustrum ovalifolium
Hassk.

Ligustrum ovalifolium, also known as California privet, garden privet,[1] and oval-leaved privet, is a shrub in the privet genus Ligustrum. [2]

The species is native to Japan and Korea. [2] It is occasionally known as Japanese privet, but is not to be confused with Ligustrum japonicum which is predominantly called by that common name.

Description

Ligustrum ovalifolium is a dense, fast-growing, deciduous (evergreen/semi-evergreen in warm winter areas) shrub. It grows to 10–15 feet (3.0–4.6 m) tall and wide.[3] It has a thick, fleshy leaf that is green on the top, and greenish-yellow on the underside. [2]

It flowers in midsummer, the abundant white blooms producing a unique pungent fragrance, unpleasant to some. [2]They are borne in panicles. They have four curled-back petals and two high stamens with yellow or red anthers, between which is the low pistil; the petals and stamens fall off after the flower is fertilized, leaving the pistil in the calyx tube. Flowering starts after 330 growing degree days.

The fruits, borne in clusters, are small purple to black drupes, poisonous for humans but readily eaten by many birds. [2] In favorable growing conditions, individual shrubs may produce thousands of fruits.[4]

Uses

Ligustrum ovalifolium is used as a food plant by the larvae of some Lepidoptera species including Common emerald, Common marbled carpet, Copper underwing, The Engrailed, Mottled beauty, Scalloped hazel, Small angle shades, The V-pug and Willow beauty. [3]

All parts of plant are poisonous if ingested by humans. [5]

Cultivation

The species Ligustrum ovalifolium is widely cultivated as an ornamental plant in many countries, as a shrub, and grouped for an informal or formal hedge. [3][2] Privets need to be trimmed several times during a growing season, in order to maintain a formal hedge shape. Regularly trimmed plants do not produce flowers or fruit.

Several cultivars are used in gardens and for hedging, including Ligustrum ovalifolium 'Aureum,' the Golden Privet, with oval, rich yellow leaves with green centers. [6] It has gained the Royal Horticultural Society's Award of Garden Merit.[7]

Ligustrum ovalifolium is the most common hedging plant species in cultivation in the United Kingdom.[8][9]

Naturalized—invasive species

The species is reportedly naturalized in France, Spain, Italy, the Balearic Islands, Saint Helena, Réunion, Chiapas (México), Costa Rica, Guatemala, Honduras, the Juan Fernandez Islands, Ontario, and in the United States.[10][11]

Ligustrum ovalifolium has also been listed as an invasive species in areas of the United States, including: California, Hawaii, Washington state, Texas, Missouri, Alabama, and many of the Mid-Atlantic and Northeastern states.[12][13][14] 46 states have it listed on their noxious weed lists. [15]

References

  1. ↑ "BSBI List 2007" (xls). Botanical Society of Britain and Ireland. Retrieved 2014-10-17.
  2. 1 2 3 4 5 6 Bellarmine University: Ligustrum ovalifolium (California Privet)
  3. 1 2 3 Missouri Botanical Garden Plant Finder: Ligustrum ovalifolium (California privet)
  4. ↑ Hasskarl, Justus Carl. 1844. Catalogus Plantarum in Horto Botanico Bogoriensi Cultarum Alter 119.
  5. ↑ PlantFiles: Ligustrum ovalifolium
  6. ↑ PlantFiles: Detailed information on Golden Privet—Ligustrum ovalifolium 'Aureum'
  7. ↑ "RHS Plant Selector - Ligustrum ovalifolium 'Excelsum Superbum'". Retrieved 21 May 2013.
  8. ↑ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  9. ↑ Agate, Elizabeth (1998). Hedging: a practical handbook. British Trust for Conservation Volunteers. p. 125. ISBN 0946752176.
  10. ↑ Kew World Checklist of Selected Plant Families, Ligustrum ovalifolium
  11. ↑ Biota of North America Program, Ligustrum ovalifolium
  12. ↑ Invasive Plant Atlas of the United States: Ligustrum ovalifolium (California privet)
  13. ↑ Swearingen, Jil; Reshetiloff, K.; Slattery, B; Zwicker, S. (2010). Plant Invaders of Mid-Atlantic Natural Areas, 4th Edition (PDF). National Park Service and U.S. Fish & Wildlife Service. p. 71.
  14. ↑ CalFlora Database: Ligustrum ovalifolium
  15. ↑ USDA: U.S. Weed Information for Ligustrum ovalifolium (California privet)
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