Plantae > Tracheophyta > Magnoliopsida > Asterales > Asteraceae > Helianthus > Helianthus nuttalliiHelianthus nuttallii (Nuttalls sunflower)Synonyms: Helianthus nuttallii f. nuttallii; Helianthus nuttallii var. nuttallii Helianthus nuttallii (Nuttall's sunflower) is a species of sunflower native to northern, central, and western North America, from Newfoundland west to British Columbia, south to Missouri, New Mexico, and California. |
| Allergen Potential [1] | Medium | | Screening - Summer [2] | Porous | | Screening - Winter [2] | Porous |  | | Bloom Period [2] | Mid Summer | | Drought Tolerance [2] | Low | | Fire Tolerance [2] | Medium | | Frost Free Days [2] | 4 months | | Fruit/Seed Abundance [2] | High | | Fruit/Seed Begin [2] | Summer | | Fruit/Seed End [2] | Fall | | Growth Form [2] | Rhizomatous | | Growth Period [2] | Spring, Summer, Fall | | Growth Rate [2] | Moderate | | Leaf Type [2] | Deciduous | | Lifespan [2] | Perennial | | Propagation [2] | Seed | | Regrowth Rate [2] | Slow | | Root Depth [2] | 14 inches (36 cm) | | Seed Spread Rate [2] | Slow | | Seed Vigor [2] | Medium | | Seeds Per [2] | 125000 / lb (275578 / kg) | | Shape/Orientation [2] | Erect | | Structure [3] | Herb | | Vegetative Spread Rate [2] | Slow | | | Flower Color [2] | Yellow | | Foliage Color [2] | Green | | Fruit Color [2] | Brown | | | Flower Conspicuous [2] | Yes | | Fruit Conspicuous [2] | Yes | | | Height [2] | 9.84 feet (3 m) | | | Hardiness Zone Minimum [2] | USDA Zone: 3 Low Temperature: -40 F° (-40 C°) → -30 F° (-34.4 C°) | | Light Preference [2] | Full Sun | | Soil Acidity [2] | Neutral | | Soil Fertility [2] | Intermediate | | Water Use [2] | Moderate |
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Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0
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