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"
Flower Time: Summer
Suitable Locations: Bog gardening
Uses: Guardian plant
Cut Flower
Dried Flower
Edible Parts: Fruit
Wildlife Attractant: Bees
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Leaves are poisonous
Other: stems are toxic
Propagation: Seeds: Suitable for wintersowing
Propagation: Other methods: Cuttings: Stem
Pollinators: Flies

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

« Add a new plant to the database

« The Plants Database Front Page

Today's site banner is by skopjecollection and is called "Carpobrotus flower"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.