Coreopsis tinctoria       0

Author: Thomas Nuttall (1786-1859)
Family: Asteraceae Subfamily: Asteroideae Tribe: Coreopsideae
Genus: Coreopsis
Synonym(s): Calliopsis bicolor
English name: Plains coreopsis
Zone: California

References
- USDA Plant Guide. plants.usda.gov Vol. COTI3. Coreopsis tinctoria
Coreopsis tinctoria Observed in New Zealand by D. J. King (license)
References for the genus
- A biosystematic survey of Coreopsis in Eastern United States and Canada, EDWIN B. SMITH. SIDA, Contributions to Botany 1976 Vol. 6(3) pag. 123-215. JStor
- Flora of North America. Coreopsis
General specifications
Annual or Biennial plant
Biological type: plant
Frost resistance: 5ºF
Leaf color: dark green
Flower color: variegated
Reproduction mode: hermaphrodite plant whoes flowers produce both male and female gametes

Specifications for the Mediterranean basin
Adult size (h x w): 1,9ft x 0,9ft
Sun exposure: full sun (Sun hours: >6h
Foliage: deciduous
Growth: fast
Flowering time from May until September
Ripe fruits in October

Specific information for our garden
Planting substrate: 20%Compost+40%Clay+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

Member of the following Vegetation Map-units
Groupe : G980 Texas Blackland Prairie.
Sowing instructions
SPRING Sow the seeds at 2mm depth in the Well Drained Seed Sowing Mix between 68-77°F. During germination keep the substrate moist and in daylight. The seeds germinate in 1-2 weeks.

Germination references
- Seeds: Ecology, Biogeography, and, Evolution of Dormancy and Germination, Baskin, Carol & Baskin, J.M. 2014 pag. 1-1586. DOI
- Smoke water and heat shock influence germination of shortgrass prairie species, Chou, Yi-Fang and Cox, Robert D and Wester, David B. Rangeland Ecology & Management 2012 Vol. 65(3) pag. 260-267. Address
- USDA Plant Guide. plants.usda.gov Vol. COTI3. Coreopsis tinctoria
- USDA Propagation Protocols. Coreopsis tinctoria

Experiences in the garden
10-04-19A Obtaining seeds from seed provider Plant World Seeds collected in '....'. (Cultivated from unknown origin)
27-06-19 Sown seeds in a tray in Serre4.
Protocol: Spring Strat Hum 4wk 2mm Sowing mix+Sand 68-77°F Damp substrate+Light 1-2w
. . . 2019B Collection of seeds in the garden collected at 08-10-19.
12-02-21 Sown 30 seeds in a tray and germinated at 04-03-21, result: 1 units.
Protocol: Spring 2mm Sowing mix+Sand 50-59°F Damp substrate+Light 1-2w
. . . 2019A Production of 15 plants in our nursery (Cultivated from unknown origin)
28-07-20 15x Dead plant due to potting too young: Serre7 F2.
. . . 2021B Production of 1 plants in our nursery
28-06-22 1x Dead plant during the seedling phase: Serre5 C1.