Helianthus giganteus growing herbaceous of the genus Helianthus also known as Giant sunflower or Tall sunflower, Helianthus giganteus perennial but in cold climate grows as annual, as perennial grow evergreen in cold area become deciduous plant also used as ornamental plant and attract pollinators, grow in tropic, mediterranean, subtropical, desert or temperate climate and growing in hardiness zone 4+.
Leaves green in rhomboid shape with serrated margins.
Helianthus giganteus flower
Flower color yellow with darker in the middle, flowers in daisy shapes.
Helianthus giganteus for sale – Seeds or Plants to Buy
Requirements for Helianthus giganteus growing and care:
Mulch, well drain soil
What is the best way to start growing?
Plant / Seed / Tuber
Is it necessary to use vegetative reproduction?
No, but it easy
Difficulties or problems when growing:
Aggressive
Planting season:
Spring / Summer
Pests and diseases:
Snail, slugs
Pruning season:
All season
How to prune:
No need
Size of the plant?
1-3 m, 40-120 inches
Growth speed in optimal condition:
Fast growing
Water requirement:
Average amount of water / Big amount of water
Light conditions in optimal condition for growing:
Full Sun
Is it possible to grow as houseplant?
No
Growing is also possible in a planter /flowerpot / containers:
Yes
Blooming information
Bloom season:
Spring / Summer / Autumn
General information about the flower:
Flower color yellow with darker in the middle, flowers in daisy shapes.
Scientific name:
Helianthus giganteus