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Helianthus laetiflorus
  • Showy Sunflower

a perennial member of the Helianthus genus in the family Compositae.

Niche
  • Unknown
    Unknown
    The ecosystem niches for this plant are unknown. Do you know them? Click the edit button to add them!
Functions
  • None
    None
    There are no functions defined for this plant. Do you know of some? Click the edit button to add them!
Light
  • Full sun
    Full sun
    The amount of sun exposure that a plant prefers in ideal conditions.
    Key
  • no shade
    No shade
    The amount of shade a plant will tolerate without adverse health affects.
    Key
Water
  • Water Requirementsmoderate
    Moderate
    The amount of water a plant needs for healthy growth, relative to other plants.
    Key
Soil
  • acid,neutral,alkaline
    Acid to Alkaline
    The PH range (acidity or alkilinity) of the growth medium ideal for healthy nutrient absorbtion.
    Key
  • Sandy to Clay
    The soil texture this plant prefers for optimal growth.
    Key
Cold & Heat
  • 4
    Zone 4
    The USDA Hardiness scale assigns plants a number from 1 to 12 representing the minimum temperature a plant can survive.
    Key
    0< -53.9ºC< -65ºF
    1-51.1ºC-60ºF
    2-45.6ºC-50F
    3-40ºC-40ºF
    4-34.4ºC-30ºF
    5-28.9ºC-20ºF
    6-23.3ºC-10ºF
    7-17.8ºC0ºF
    8-12.2C10ºF
    9-6.7ºC20ºF
    10-1.1ºC30ºF
    114.4ºC40ºF
    12> 10ºC> 5ºF
  • ?
    Unknown
    The AHS Heat scale assigns plants a number from 1 to 12 representing the number of days per year a plant requires a temperature exceeding 30ºC (86ºF).
    Key
    11
    21 - 7
    38 - 14
    415 - 30
    531 - 45
    646 - 60
    761 - 90
    891 - 120
    9121 - 150
    10151 - 180
    11181 - 210
    12181 - 210
Helianthus laetiflorus has 0 edible uses listed

Uses

Edible uses

Notes

Tubers - raw or cooked[55, 105, K]. Used like Jerusalem artichokes, to which they are not much inferior in taste though yields are lower[1][2].

Root

Unknown use

Material uses

There are no material uses listed for Helianthus laetiflorus.

Medicinal uses(Warning!)

There are no medicinal uses listed for Helianthus laetiflorus.

Ecology

Ecosystem niche/layer

Ecological Functions

Nothing listed.

Forage

Nothing listed.

Shelter

Nothing listed.

Propagation

Seed - sow spring in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.

Division in spring or autumn. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.

Basal cuttings in spring. Harvest the shoots when they are about 10 - 15cm long with plenty of underground stem. Pot them up into individual pots and keep them in light shade in a cold frame or greenhouse until they are rooting well. Plant them out in the summer.

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



Cultivation

Succeeds in most soils in a sunny position[3]. Requires a rich soil[3]. Dislikes shade[3].

The young growth is extremely attractive to slugs, plants can be totally destroyed by them[K]. Members of this genus are rarely if ever troubled by browsing deer or rabbits[4]. A naturally occurring hybrid, H. pauciflorus (or H. rigidus in another report) x H. tuberosus[5]. Plants have a running root system and can be very invasive[3].

This species is often grown as an ornamental plant, there are several named varieties[3].

Crops

Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Helianthus laetiflorus. 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 Helianthus laetiflorus.

Descendants

Cultivars

Varieties

None listed.

Subspecies

None listed.

Full Data

This table shows all the data stored for this plant.

Taxonomy
Binomial name
Helianthus laetiflorus
Genus
Helianthus
Family
Compositae
Imported References
Edible uses
[1][2]
Medicinal uses
Material uses & Functions
Botanic
[6][5][7]
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
4
Heat Zone
?
Water
moderate
Sun
full sun
Shade
no shade
Soil PH
acid, neutral, alkaline
Soil Texture
sandy, loamy, clay
Soil Water Retention
well drained
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
    perennial
    Growth Rate
    ?
    Mature Size
    2 x meters
    Fertility
    ?
    Pollinators
    Bees, Flies
    Flower Colour
    ?
    Flower Type
    hermaphrodite











    References

    1. ? 1.01.1 Saunders. C. F. Edible and Useful Wild Plants of the United States and Canada. Dover Publications ISBN 0-486-23310-3 (1976-00-00)
    2. ? 2.02.1 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
    3. ? 3.03.13.23.33.4 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
    4. ? Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. ISBN 0 460 86048 8 (1990-00-00)
    5. ? 5.05.1 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
    6. ? Fernald. M. L. Gray's Manual of Botany. American Book Co. (1950-00-00)
    7. ? Britton. N. L. Brown. A. An Illustrated Flora of the Northern United States and Canada Dover Publications. New York. ISBN 0-486-22642-5 (1970-00-00)


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    Facts about "Helianthus laetiflorus"RDF feed
    Article is incompleteYes +
    Article requires citationsNo +
    Article requires cleanupYes +
    Belongs to familyCompositae +
    Belongs to genusHelianthus +
    Has common nameShowy Sunflower +
    Has drought toleranceIntolerant +
    Has edible partRoot +
    Has edible useUnknown use +
    Has fertility typeBee + and Flies +
    Has flowers of typeHermaphrodite +
    Has hardiness zone4 +
    Has lifecycle typePerennial +
    Has mature height2 +
    Has search namehelianthus laetiflorus + and x +
    Has shade toleranceNo shade +
    Has soil ph preferenceAcid +, Neutral + and Alkaline +
    Has soil teclayture preferenceClay +
    Has soil teloamyture preferenceLoamy +
    Has soil tesandyture preferenceSandy +
    Has soil water retention preferenceWell drained +
    Has sun preferenceFull sun +
    Has taxonomy nameHelianthus laetiflorus +
    Has water requirementsmoderate +
    Is taxonomy typeSpecies +
    Tolerates nutritionally poor soilNo +
    Uses mature size measurement unitMeters +