Pelargonium worcesterae       15137

Author: Reinhard Gustav Paul Knuth (1874-1957)
Family: Geraniaceae
Genus: Pelargonium
English name: Worcester pelargonium
Zone: South Africa

References
- Pelargoniums, Diana Miller. 1996 pag. 86. ISBN
Pelargonium worcesterae Observed in South Africa by cilliers10 (license)
References for the genus
- A taxonomic revision of the type section of Pelargonium L'Hérit.(Geraniaceae), Van der Walt, James JA. Bothalia 1985 Vol. 15(3) pag. 345-385. Address
- Cape plants: A conspectus of the Cape flora of South Africa - Strelitzia 09, Peter Goldblatt and John Manning. 2001 Vol. 7(6). DOI
- Flora capensis :being a systematic description of the plants of the Cape colony, Caffraria, & Port Natal (and neighbouring territories), Harvey, William H. (William Henry), and Sonder, Otto Wilhelm, and Thiselton-Dyer, William T. (William Turner),. 1909 Vol. 1. Address
- Miscellaneous notes on the genus Pelargonium, van der Walt, James JA and Vorster, Pieter Johannes. Bothalia 1981 Vol. 13(3/4) pag. 431-433. Address
- Mitochondrial and Chloroplast DNA-Based Phylogeny of Pelargonium (Geraniaceae), Freek T. Bakker and Alastair Culham and Clive E. Pankhurst and Mary Gibby. American Journal of Botany 2000 Vol. 87(5) pag. 727-734. JStor
- Pelargonium pachypodium (sect. Otidia), a new species from northern cape, South Africa, Roux, J. Bothalia - African Biodiversity and Conservation 2013 Vol. 43 pag. 230-U241.
- Phytogeography of Pelargonium, J. van der Walt and P. Vorster. Bothalia 1983 Vol. 14(3/4) pag. 517-523. DOI
- Taxonomy and phylogeny of two subgroups of Pelargonium section Otidia (Geraniaceae). 1. The Pelargonium carnosum complex, Becker, Matthias and Albers, F. Bothalia 2009 Vol. 39. DOI
General specifications
Biological type: plant
Frost resistance: 18ºF
Leaf color: dark green
Flower color: white
Indexed Susceptible to the bacteria Xylella fastidiosa The Regional Directorate for Food, Agriculture and Forestry.

Specifications for the Mediterranean basin
Adult size (h x w): 1,9ft x 1,9ft
Sun exposure: full sun (Sun hours: >6h
Foliage: evergreen
Growth: fast
Flowering time from January until December
Ripe fruits in June

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: Succulents; tray, 1L container, 2L forestry pot, 6L container, 55L container
Propagation is done by cuttings
Units in the garden: 1x
Sowing instructions
AUTUMN Sow the seeds at 2mm depth in the Sand at >77°F. During germination keep the substrate moist and in daylight. The seeds germinate in 3-5 weeks.

Germination references for the genus
- Some geophytic Pelargoniums, Michael Vassar. Herbertia 1996 Vol. 51 pag. 58-65. Address
Experiences in the garden
13-03-19A Obtaining seeds from seed provider International Geraniaceae Group.
26-03-19 Sown seeds in a tray and germinated at 29-03-19.
Protocol: Spring 2mm Sand 59-68°F day 64°F night Damp substrate+Light 3-5w
. . . 2019A Production of 3 plants in our nursery: Serre4 3x F3 and planted in zone(s) PlatBAizo
. . . 2022A Collection of seeds in the garden collected at 15-06-22. Stock
10-10-22 Sown 10 seeds in a tray and germinated at 30-03-23 but the seedlings did not survive in Serre4.
Protocol: Autumn 2mm Sand 64-72°F Damp substrate+Light 3w