Sonchus acaulis       6918

Author: Georges Louis Marie Dumont de Courset (1746-1824)
Family: Asteraceae Subfamily: Cichorioideae Tribe: Cichorieae Subtribe: Hyoseridinae
Genus: Sonchus
English name: Stemless sow thistle
Zone: Mediterranean

References
- 559. Sonchus acaulis: Compositae, Nicholas Hind. Curtis's Botanical Magazine 2006 Vol. 23(2) pag. 169-175. JStor
Sonchus acaulis Observed in Spain by František Lamla (license)
References for the genus
- Correlated evolution of leaf shape and physiology in the woody Sonchus alliance (Asteraceae: Sonchinae) in Macaronesia, Santiago, Louis S and Kim, Seung-Chul. International Journal of Plant Sciences 2009 Vol. 170(1) pag. 83-92. ResearchGate
- Flora Canaria. Guía de identificación, Peter E Ingrid Schonfelder. 2018. ISBN
- Flora of Madeira, J R Press & M J Short. Pelagic Publishing 2016 pag. 374-376. ISBN
- Sonchus L., Ralph A. Lewin. Journal of Ecology 1948 Vol. 36(1) pag. 203-223. JStor
- Taxonomic treatment of Cichorieae (Asteraceae) endemic to the Juan Fernádez and Desventuradas Islands (SE Pacific), Mejìas, José A and Kim, Seung-Chul. 2012 Vol. 49(3) pag. 171-178. Address
- Wild Flowers Of The Canary Islands, David Bramwell MSc., PhD. & Zoe I. Bramwell BSc. 1974. ISBN
General specifications
Biological type: shrub
Frost resistance: 23ºF
Leaf color: bright green
Flower color: yellow

Specifications for the Mediterranean basin
Adult size (h x w): 3,2ft x 4,9ft
Sun exposure: full sun (Sun hours: >6h
Foliage: evergreen
Growth: fast
Flowering time from April until May
Ripe fruits in February

Specific information for our garden
Planting substrate: 30%Compost+30%Coco+40%Sand
Plant watering: 1x 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 root division
Sowing instructions
AUTUMN Sow the seeds at 4mm depth in the Well Drained Seed Sowing Mix between 59-68°F. Keeps the substrate slightly acidic (<6 PH) and in daylight.
Experiences in the garden
. . . 2019A Collection of seeds in the garden collected at 27-02-19.
24-05-19 Sown seeds in a tray and germinated at 16-06-19 but the seedlings did not survive.
Protocol: Spring 4mm Sowing mix+Sand 68-77°F Damp substrate+Light
02-11-20B Obtaining seeds from seed provider Rare Plants.
23-11-20 Sown 30 seeds in a tray and germinated at 08-12-20.
Protocol: Autumn 4mm Sowing mix+Sand 59-68°F Slightly acidic
. . . 2020B Production of 10 plants in our nursery: Serre3 4x F3 Petit32 1x C55
04-01-24 2x Dead plant because of substrate problem: Serre8 F2.
03-09-24 3x Dead plant: No information: Serre8 F2.
23-07-21C Obtaining seeds from seed provider Rare Plants. Stock
. . . 2025B Collection of seeds in the garden collected at 12-06-25. Stock Index Seminum