Hypericum kalmianum 'Gemo'       0

Author: Tai Hyun Chung (1882-1971) ex Takenoshin Nakai (1882-1952)
Family: Hypericaceae Subfamily: Hypericoideae Tribe: Hypericeae
Genus: Hypericum
English name: Kalm's st. johns wort 'gemo'
Zone: California
References for the genus
- A revision of the South African species of Hypericum, Bredell, HC. Bothalia 1939 Vol. 3(4) pag. 571-578. Address
- Clarifying the nomenclature of non-Andean South American Hypericum (Hypericaceae), Vogel Ely, Cleusa and de Loreto Bordignon, Sérgio Augusto and Iob Boldrini, Ilsi. Taxon 2020 Vol. 69(3) pag. 593-604. DOI
- eFloras. eFloras.org Vol. 2 pag. 116180. Hypericum
- Estudios crìticos sobre la flora de Chile, Reiche, Karl. Anales de la Universidad de Chile 1903. Address
- Flora Europaea, T. G. Tutin, V. H. Heywood, N. A. Burges, D. H. Valentine, S. M. Walters, D. A. Webb. 1968 Vol. 2 pag. 261-269. ISBN
- Flora iberica, Santiago Castroviejo. 2010 Vol. 3 pag. 157-185. ISBN
- Flora of North America. Hypericum
- Flora of Southern Africa, L.E. Codd, B. De Winter And H.B. Rycroft. Vol. 22 pag. 14-20. Address
- Flora of Turkey and the East Aegean Islands, P.H. Davies. 1984 Vol. 2 pag. 355-402. ISBN
- Mountain Flora of Greece, Volume 1, Arne Strid. 1989 pag. 494-608. ISBN
- Phylogenetic insights into Hypericum (Hypericaceae) from China based on genome-skimming data, Bai Rui-Zhu, Yu Jia-Xin, Zhao Fei, Asafaw Fassil, Drew Bryan T., Chen Ya-Ping, Seregin Alexey P., Cai Jie, Menemen Yusuf, Celep Ferhat, He Zheng-Shan, Ertas Seref, Xu Gang and Xiang Chun-Lei. Taxon 2026 Vol. 75(3) pag. e70166. DOI
- Studies in the genus Hypericum L. (Guttiferae), Norman Keith Bonner Robson. Bulletin of the British Museum (Natural History) Botany. Address
- Taxonomy and chemotaxonomy of the genus Hypericum, Crockett, Sara L and Robson, Norman KB. Medicinal and aromatic plant science and biotechnology 2011 Vol. 5(Special Issue 1) pag. 1. Address
General specifications
Biological type: plant
Frost resistance: 5ºF
Leaf color: dark green
Flower color: yellow
Reproduction mode: hermaphrodite plant whoes flowers produce both male and female gametes

Specifications for the Mediterranean basin
Adult size (h x w): 3,2ft x 3,2ft
Sun exposure: part sun (Sun hours: >3h <6h
Foliage: evergreen
Growth: average
Flowering time from July until July

Specific information for our garden
Planting substrate: 30%Compost+30%Coco+40%Sand
Plant watering: 3x a week pH 6.5
Logical sequence of containers for: Perennials; forestry plate 8cm, 1L container, 2L forestry pot, 6L container, 55L container
Propagation is done by cuttings
Sowing instructions
SPRING Sow the seeds at 2mm depth in the Well Drained Seed Sowing Mix between 59-68°F. During germination keep the substrate moist and protected from direct sunlight. The seeds germinate in 2-4 weeks.
This plant is available from the following nurseries
Experiences in the garden
14-10-10A Obtaining 24 plants from nursery Minier (Cultivated from unknown origin)
21-02-20 20x Dead plant: End of life: Platte-Bande.
23-10-12 4x Dead plant after plantation too late in the season: JTz2.