Prunella grandiflora

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Prunella grandiflora
Light:Full Sun Part Shade
Moisture:Mesic
Hardiness:5
Soil pH:5.6-8.4
Evergreen
Height:0.5'
Width:1'
Blooms:Mid Summer-Early Fall
Native to:
Edible Rating:PFAF Edibility RatingPFAF Edibility RatingPFAF Edibility Rating
Tea:Yes
Poisonous

Prunella grandiflora

Propagation: Seed - sow in mid spring in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer.

If you have sufficient seed then it can be sown outdoors in situ in mid to late spring.

Division in spring or autumn. Very easy, larger divisions can be planted out direct into their permanent positions. We have found that it is better to pot up the smaller divisions and grow them on in light shade in a cold frame until they are well established before planting them out in late spring or early summer.

Cultivation: Thrives in any damp soil in a shady position[1][2] or in full sun[3].

Plants are hardy to about -25°c[4].

The sub-species P. grandiflora pyrenaica has larger flowers and is found wild on acid soils whilst the type species is usually found on alkaline soils[4].

Plants tend to be short-lived, often dying out after flowering heavily in the summer[5]. Fortunately, they will usually self-sow freely[K].

Most plants are hermaphrodite but sometimes male plants are found.

Range: Europe.

Habitat: Grassland, usually in calcareous soils[6].

Edibility: Leaves - raw or cooked[7][8][9]. A mild flavour[K].

Usage: Can be used as a ground cover plant in a sunny position or light shade[10][11]. It requires weeding for the first year or so[11]. They are best spaced about 45cm apart each way[5]. Plants have not been a reliable ground cover in Cornwall, often dying after flowering, though they usually self-sow[K].

Pollinators: Bees

Soil: Can grow in light, medium, and heavy soils.

In Leaf: Evergreen

Seed Ripens: Late Summer-Early Fall

Flower Type: Hermaphrodite

Also Known As: P. pyrenaica.

Links

References

  1. Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  2. Sanders, Thomas. Popular Hardy Perennials. Collingridge, 1926.
  3. Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  4. 4.0 4.1 Phillips, Roger and Martyn Rix. Perennials - The Definitve Reference. Pan Books, 1991.
  5. 5.0 5.1 Thomas, Graham. Plants for Ground Cover. Everyman, 1990.
  6. Tutin, Tom et al.. Flora Europaea. Cambridge University Press, 1964.
  7. Uphof, Johannes. Dictionary of Economic Plants. Weinheim, 1959.
  8. Usher, George. A Dictionary of Plants Used by Man. Constable, 1974.
  9. Tanaka, Tyōzaburō. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing, 1976.
  10. Brickell, Christopher. The RHS Gardener's Encyclopedia of Plants and Flowers. Dorling Kindersley Publishers, 1990.
  11. 11.0 11.1 Napier, Elspeth. Ground Cover Plants. Cassells, 1989.