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Uses

Edible uses

Notes

The flower petals are used in salads[1]. Root - cooked and used as a vegetable[2][3]. A bitter flavour[4]. Inedible according to another report[1]. A sweet extract of the tuber, called 'dacopa', is used as a beverage or as a flavouring. It is mixed with hot or cold water and sprinkled on ice cream. Its naturally sweet mellow taste is said to combine the characteristics of coffee, tea and chocolate[5]. The root is rich in the starch inulin. Whilst not absorbed by the body, this starch can be converted into fructose, a sweetening substance suitable for diabetics to use[6][2].

Unknown part

Flowers

Material uses

Yellow and gold dyes are obtained from the flowers and seed heads[7].

Unknown part

Dye

Medicinal uses(Warning!)

A valuable and much needed drug was extracted from dahlia roots during the first world war[6]. No more information was given in the report[K].

Unknown part

Ecology

Ecosystem niche/layer

Ecological Functions

Nothing listed.

Forage

Nothing listed.

Shelter

Nothing listed.

Propagation

Seed - sow late winter to mid spring in a greenhouse. The seed usually germinates in 1 - 3 weeks at 20°c[8]. When 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.

Cuttings of young shoots in early spring. The tubers are usually brought into the greenhouse in late winter in order to encourage early growth and young basal shoots are removed as soon as they are large enough[4].

Division. The roots are usually harvested in the autumn. These can be divided into individual tubers when planting out in the spring. Each portion should have a growing point[4].

Practical Plants is currently lacking information on propagation instructions of Dahlia rosea. Help us fill in the blanks! Edit this page to add your knowledge.



Cultivation

Requires a deep rich soil and a sunny position[9], disliking shade[4].

The growing plant is very frost-tender, though the tubers are somewhat hardier. However, these tubers are not reliably hardy if left in the ground over winter in Britain[4]. They are best harvested after the foliage is killed off by frost and then stored in a cool but frost-free place over the winter, planting out in April/May[4].

A parent of the cultivated garden dahlia[9]. There is some confusion over this name, this entry might refer to D. hortensis or D. pinnata[4].

Crops

Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Dahlia rosea. Do you know of an interaction that should be listed here? edit this page to add it.

Polycultures & Guilds

There are no polycultures listed which include Dahlia rosea.

Descendants

Cultivars

Varieties

None listed.

Subspecies

None listed.

Full Data

This table shows all the data stored for this plant.

Taxonomy
Binomial name
Dahlia rosea
Genus
Dahlia
Family
Compositae
Imported References
Edible uses
Medicinal uses
Material uses & Functions
Botanic
Propagation
Cultivation
Environment
Cultivation
Uses
Edible uses
None listed.
Material uses
None listed.
Medicinal uses
None listed.
Functions & Nature
Functions
Provides forage for
Provides shelter for
Environment
Hardiness Zone
9
Heat Zone
?
Water
moderate
Sun
full sun
Shade
no shade
Soil PH
Soil Texture
Soil Water Retention
Environmental Tolerances
    Ecosystems
    Native Climate Zones
    None listed.
    Adapted Climate Zones
    None listed.
    Native Geographical Range
    None listed.
    Native Environment
    None listed.
    Ecosystem Niche
    None listed.
    Root Zone Tendancy
    None listed.
    Life
    Deciduous or Evergreen
    ?
    Herbaceous or Woody
    ?
    Life Cycle
    Growth Rate
    ?
    Mature Size
    Fertility
    ?
    Pollinators
    Flower Colour
    ?
    Flower Type











    References

    1. ? 1.01.11.2 Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications ISBN 0-486-20459-6 (1972-00-00)
    2. ? 2.02.12.2 Usher. G. A Dictionary of Plants Used by Man. Constable ISBN 0094579202 (1974-00-00)
    3. ? 3.03.1 Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing (1976-00-00)
    4. ? 4.04.14.24.34.44.54.64.74.8 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
    5. ? 5.05.1 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
    6. ? 6.06.16.26.3 Grieve. A Modern Herbal. Penguin ISBN 0-14-046-440-9 (1984-00-00)
    7. ? 7.07.1 Buchanan. R. A Weavers Garden. ()
    8. ? Bird. R. (Editor) Growing from Seed. Volume 4. Thompson and Morgan. (1990-00-00)
    9. ? 9.09.1 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)

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