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| Identification |
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Genus
Helianthus
Species
maximiliana
Variety
Cultivar
Common names
Maximilian's sunflower
Family
ASTERACEAE
Specimen number
S11179
Data source
HtZn p123
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| Life cycle |
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Life form
Terrestrial
Life cycle
Annual
Life span
1 year
Annual cycle
Not applicable
Stature
Flower
Growth form
Not applicable
Growth habit
Various
Overall height
7' - 10'
Overall spread
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| Climate |
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Sunshine
Full sun
Water
Moist, well drained
Optimal soil texture
Various
Acceptable soil pH
Neutral
USDA hardiness
USDA zones 04a-09b
AHS heat zones
Heat zones 11-03
Sunset climate zones
Not classified
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| Garden |
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Suitable for gardens
yes
Nursery
Unknown
Compost
no
Size at acquisition
Unknown
Garden location
Unknown
Garden notes
Helianthus maximiliana can survive very cold winters with annual averages as low as -30� Fahrenheit. Maximilian's sunflower needs summer days with high heat. This plant likes full sun. It usually does best in moist, well drained soils.
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| Special qualities |
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Tolerates drought
no
Tolerates high humidity
no
Tolerates seaside conditions
no
Insect resistant
no
Disease resistant
no
Deer resistant
no
Best uses
Symbiosis
Attracts butterflies
no
Attracts hummingbirds
no
Autumn foliage
no
Colorful berries
no
Desirable qualities
Other interest
Other interest color
Other interest period
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| Adverse factors |
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Common pests
Poisonous parts
Poisonous indications
Internal poison
no
Dermatologic poison
no
Livestock poison
no
Mechanical injury
no
Hay fever pollen
Hay fever season
Adverse qualities
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| Herbal medicine |
|
Medicinal properties
Medicinal parts
Has medicinal uses
no
Do not self-administer
no
Do no use if pregnant
no
Legally restricted
no
Toxicity precautions
Medicinal notes
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| Traditional uses |
|
Parts used
Traditional uses
Contemporary uses
Fragrance
Fragrance parts
Fragrance intensity
Fragrance category
Dye parts
Dye color
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| Cultivation |
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Propagule
Division
Pollination method
Planting style
Crop spacing
Row spacing
Cold frame
Planting period
Harvesting period
Frost tolerance
Heat requirement
Fertilizer
Typical
Time to harvest
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| Nutrition |
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Is edible
no
Culinary uses
Nutritional value
Edible parts
Description of edible parts
Flavor / texture
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| Horticulture |
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Horticulture notes
Helianthus maximiliana is typically propagated by division.
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| Herbarium |
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Tag needs printing
no
Collection notes
Helianthus maximiliana has an annual life cycle. Flowers: Maximilian's sunflower has 3" blooms on 7' to 10' stalks. Flowers begin in July and don't stop until October. The blossoms are most often a yellow color, with an accent in brown.
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