Helianthus Nuttallii

Nuttall's sunflower - Helianthus Nuttallii 06JL23
Nuttall's sunflower - Helianthus Nuttallii 07JL15

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Nuttall's sunflower - Helianthus Nuttallii 07JL22

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characteristics

Perennial with upright, smooth stems; sometimes rough below the flowers. Leaves are opposite or alternate, toothed, hairy, and flat. Multiple yellow flowers with a reddish centre. Can grow up to 3 m tall. Growth is from rhizomes and tuberous roots. Also known as chocolate sunflower, as it smells like dark chocolate.

125,000 seeds/pound; starts from seed, division, container.

T SSN H W sun soil H2O fire N2 pH summer fall flower (seed)
P W-Y 2.0 0.2 S F-M M •• - 5.9-7.5 green grey yellow

habitat

Moist meadows, ditches.

uses

Seeds were eaten or boiled and used for dye.

Medicinal use: colds, fever, digestive complaints.

Seed is eaten by birds.

Bees are attracted to the flower.

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common > name = have on site
T = type: A = annual | B = biennial | P = perennial | SS = subshrub | D = deciduous | C = coniferous
██ = cold stratify | ██ = cold stratify & scarify | ██ = plant directly | ██ = scarify | ██ = not from seed
SSN = season: C = cool | W = warm | Y = late
H = height (in metres) | W = width (in metres) | B = bunch | S = sod | SB = sod/bunch
sun: S = full sun | S/PS = sun or partial shade | PS = partial shade | SH = full shade
soil: F = fine | M = medium | C = coarse
H2O = moisture requirement: D = dry | M = moist | W = wet | Z = aquatic
fire = fire tolerance: - = unknown | X = none | = some | •• = moderate | ••• = high tolerance
N2 = nitrogen fixing: = yes
summer = foliage colour | fall = foliage (stem) colour | flower (seed) = flower (seed / fruit) colour, if conspicuous
pH = acidity - alkalinity