Hypericum hypericoides

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Hypericum hypericoides
Light:Full Sun Part Shade
Moisture:Xeric Mesic
Hardiness:6
Soil pH:5.6-8.4
Self Pollinated
Height:4'
Blooms:Mid Summer-Early Fall
Native to:
Medicinal Rating:
Tea:Yes
Poisonous

Hypericum hypericoides (common name: st. andrews cross)

Propagation: Seed - sow spring in a greenhouse and only just cover the seed. Germination usually takes place within 1 - 3 months at 10°c. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.

Cuttings of half-ripe wood 10 - 12 cm with a heel, July/August in a frame. Plant out in the following spring[1].

Cuttings of mature wood, 12 - 17cm with a heel, October/November in a sheltered position outdoors. Plants root by the spring. Good percentage[2].

Division in spring as new growth commences[2]. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.

Cultivation: Easily grown in any reasonably good well-drained but moisture retentive soil[3]. Succeeds in sun or semi-shade but flowers better in a sunny position[3]. Prefers a light loamy soil[4].

One report says that the plant requires frame protection in the winter[3] whilst another says that plants are hardy but short-lived at Kew[4]. It possibly suffers more from wet soils than from the cold, see the plant's native habitat above.

Plants in this genus are notably resistant to honey fungus[1].

Range: Eastern N. America - Massachusetts to Florida, west to Texas and Illinois.

Habitat: Dry sandy soils[5].

Medicinal: Lithontripic[6].

The root was chewed as an antidote to rattlesnake bites[7][8].

A tea made from the roots is used in the treatment of colic, fevers, pain, diarrhoea etc[8]. It is applied externally to ulcerated breasts[8].

A tea made from the leaves is used in the treatment of kidney and bladder ailments, skin problems and children's diarrhoea[6][8].

A milky substance obtained from the plant has been rubbed on sores[9].

Pollinators: Insects

Soil: Can grow in light and medium soils.

Drainage: Prefers well drained soil.

Flower Type: Hermaphrodite

Known Hazards: Contact with the sap can cause photosensitivity in sensitive people[8].

Also Known As: Ascyrum hypericoides.

Links

References

  1. 1.0 1.1 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  2. 2.0 2.1 Sheat, Wilfrid. Propagation of Trees, Shrubs and Conifers. St Martin, 1948.
  3. 3.0 3.1 3.2 Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  4. 4.0 4.1 Bean, William. Trees and Shrubs Hardy in Great Britain. Murray, 1981.
  5. Lyndon, Merritt. Gray's Manual of Botany. American Book Co, 1950.
  6. 6.0 6.1 Usher, George. A Dictionary of Plants Used by Man. Constable, 1974.
  7. Coffey, Timothy. The History and Folklore of North American Wild Flowers. Facts on File, 1993.
  8. 8.0 8.1 8.2 8.3 8.4 Foster, Steven and Billy Tatum. Medicinal Plants of Eastern and Central North America. Houghton Mifflin, 1990.
  9. Moerman, Daniel. Native American Ethnobotany. Timber Press, 1998.