PlantsHelianthus→Giant Sunflower (Helianthus giganteus)

Common names:
Give a thumbs up Giant Sunflower
Give a thumbs up Tall Sunflower

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Plant Height: 3-10 feet
Fruit: Showy
Edible to birds
Flowers: Showy
Flower Color: Yellow
Bloom Size: 2"-3"
3"-4"
Flower Time: Summer
Suitable Locations: Bog gardening
Uses: Guardian plant
Cut Flower
Dried Flower
Edible Parts: Fruit
Wildlife Attractant: Bees
Butterflies
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Leaves are poisonous
Other: stems are toxic
Propagation: Seeds: Suitable for wintersowing
Propagation: Other methods: Cuttings: Stem
Division
Pollinators: Flies
Bees

Giant sunflower, or tall sunflower, on the edge of Osprey Marsh i

Photo gallery:

Discussion Threads about this plant
Thread Title Last Reply Replies
I am not sure if this is a member of the helianthus or rudbeckia family by dragonlace Oct 2, 2019 11:50 AM 3
This was given to us, but I have no idea what it is by nestof3 Oct 9, 2017 3:38 PM 22
Very tall perennial sunflower - what species is it? by JuneOntario Sep 13, 2013 7:09 PM 7
Wildflowers in Northern gardens? by CarolineScott Sep 18, 2013 6:23 AM 22

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