Pieris japonica

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Pieris japonica
Pieris japonica 10.jpg
Inflorescence
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Pieris
Species:
P. japonica
Binomial name
Pieris japonica
Synonyms [1]

Andromeda japonica Thunb. L.

Pieris japonica, the Japanese andromeda or Japanese pieris, is a species of flowering plant in the heath family Ericaceae. It is native to eastern China, Taiwan, and Japan, where it grows in mountain thickets. [2] This medium-sized evergreen shrub or tree is widely cultivated in gardens.

Contents

Description

It grows to 1–4 metres or 3.3–13.1 feet tall, occasionally up to 10 metres. Its leaves are arranged alternately and are simple, obovate to oblanceolate in shape, 3 to 9 cm long, with serrated margins. [3] [4] They are lustrous and leathery in texture and dark green in color while new growth is a conspicuous bronze or red eventually turning green.

It blooms from early to late spring with drooping trusses of fragrant, white or pink urn-shaped flowers about 10 cm long hanging from the tips of the branches. [3] [4] Each flower is about 5 to 6 mm long and its clusters with their long blooming season [4] provide a decorative effect against the young red leaves. The flowers usually last two or three weeks.

The plant is poisonous if consumed. [3] [4] [5] The toxicity is a result of the grayanotoxins contained by the flowers and leaves. If flowers and leaves are ingested by humans, symptoms may include salivation, headaches, vomiting, cardiac failure, and death. [4] Cattle, goats, horses, dogs, and cats may suffer similar symptoms after ingesting the leaves or flowers of this plant. [6]

The name "andromeda" originated from an earlier genus name for the plant.

Cultivation

Pieris japonica is a popular temperate garden plant, producing colour in early spring. A calcifuge, it requires acid pH soil, typically in a partially shaded setting such as dappled woodland. It associates well with camellias, rhododendrons, and other lime-hating plants.

Cultivars

The following cultivars have received the Royal Horticultural Society's Award of Garden Merit:

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References

  1. "Pieris japonica". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 12 January 2018.
  2. Fang Ruizheng, Peter F. Stevens. "Pieris japonica". Flora of China. Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA. Retrieved 27 May 2012.
  3. 1 2 3 "Pieris japonica | Landscape Plants | Oregon State University". landscapeplants.oregonstate.edu. Retrieved 2024-03-01.
  4. 1 2 3 4 5 "Pieris japonica (Andromeda Japonica, Fetterbush, Japanese Andromeda, Japanese Pieris, Lily-of-the-valley Bush, Pieris) | North Carolina Extension Gardener Plant Toolbox". plants.ces.ncsu.edu. Retrieved 2021-03-11.
  5. Smith, M. C. (1978). "Japanese pieris poisoning in the goat". Journal of the American Veterinary Medical Association. 173 (1): 78–79. PMID   670056.
  6. "Guide to Poisonous Plants – College of Veterinary Medicine and Biomedical Sciences – Colorado State University". csuvth.colostate.edu. Retrieved 2021-03-11.
  7. "Pieris japonica 'Blush'". RHS. Retrieved 18 January 2021.
  8. "Pieris japonica 'Bonfire'". RHS. Retrieved 18 January 2021.
  9. "Pieris japonica 'Carnaval'". RHS. Retrieved 18 January 2021.
  10. "Pieris japonica 'Cavatine'". RHS. Retrieved 18 January 2021.
  11. "Pieris japonica". RHS. Retrieved 18 January 2021.
  12. "Pieris 'Firecrest'". RHS. Retrieved 18 January 2021.
  13. "Pieris japonica 'Flaming Silver'". RHS. Retrieved 18 January 2021.
  14. "Pieris japonica 'Mountain Fire'". RHS. Retrieved 18 January 2021.
  15. "Pieris japonica 'Pink Delight'". RHS. Retrieved 18 January 2021.
  16. "Pieris japonica 'Prelude'". RHS. Retrieved 18 January 2021.
  17. "Pieris japonica 'Purity'". RHS. Retrieved 18 January 2021.
  18. "Pieris japonica 'Sarabande'". RHS. Retrieved 18 January 2021.
  19. "Pieris japonica 'Valley Valentine'". RHS. Retrieved 18 January 2021.