Glaucium flavum

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Glaucium flavum
Light:Full Sun
Moisture:Xeric Mesic
Hardiness:7
Soil pH:5.6-8.4
Height:2'
Width:1'
Speed:Slow
Blooms:Early Summer-Late Summer
Native to:
Edible Rating:PFAF Edibility RatingPFAF Edibility Rating
Medicinal Rating:PFAF Medicinal RatingPFAF Medicinal Rating
Tea:Yes
Poisonous

Glaucium flavum (common name: horned poppy)

Propagation: The seed can be sown in the middle of spring or in autumn in a cold frame. A period of cold stratification improves germination. As soon as they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts[1].

If you have sufficient seed it should be worthwhile trying an outdoor sowing in situ in mid spring[1].

Cultivation: Easily grown in any good well-drained soil[1][2]. Requires a very well-drained poor soil[3]. Prefers a hot dry position[4] and dislikes shade[2].

A very ornamental but short-lived perennial[1], it is hardy to about -10°c[3].

Plants are resentful of root disturbance and should be placed in their final positions as soon as possible[2].

Flowers are produced in the first year from seed[2].

Range: Usually near the coast in W. Europe, including Britain, to the Mediterranean and W. Asia.

Habitat: Shingle banks by the coast[5].

Edibility: A clear yellow edible oil is obtained from the seed[6][7][8][9].

Medicinal: Poultice[10].

Usage: An oil obtained from the seed is used for as a fuel for lighting, it burns cleanly[6]. It is also used in soap making[7].

Pollinators: Bees, flies

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

Drainage: Prefers well drained soil.

Wind: Tolerates maritime wind exposure

Seed Ripens: Late Summer-Early Fall

Flower Type: Hermaphrodite

Known Hazards: Root is poisonous.

Also Known As: G. luteum.

Links

References

  1. 1.0 1.1 1.2 1.3 Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  2. 2.0 2.1 2.2 2.3 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  3. 3.0 3.1 Phillips, Roger and Martyn Rix. Perennials - The Definitve Reference. Pan Books, 1991.
  4. Taylor, Jane. The Milder Garden. Dent, 1990.
  5. Clapham, Arthur and Tom Tootin, Edmund Warburg. Flora of the British Isles. Cambridge University Press, 1962.
  6. 6.0 6.1 Hedrick, Ulysses. Sturtevant's Edible Plants of the World. Dover Publications, 1972.
  7. 7.0 7.1 Uphof, Johannes. Dictionary of Economic Plants. Weinheim, 1959.
  8. Usher, George. A Dictionary of Plants Used by Man. Constable, 1974.
  9. Facciola, Stephen. Cornucopia - A Source Book of Edible Plants. Kampong Publications, 1990.
  10. Freethy, Ron. From Agar to Zenery. The Crowood Press, 1985.