Helianthus annuus

Also Known As

Delta Sunflower

Plant type

annual / biennial

size

H: 5'-6'
W: 3'-5'

planting zones

1-11

More Options

Helianthus annuus plant details

Helianthus annuus is a broadleaf deciduous annual / biennial with green foliage. In fall and summer yellow flowers emerge. Grows well with sun and even moisture - low water. Drought tolerant once established. Adapts to various soil conditions. Does well in average, rich and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Helianthus annuus

Plant type: annual / biennial
Plant family: asteraceae
Foliage: deciduous green
Mature size: 3 FT - 5 FT - wide, 5 FT - 6 FT - tall
Flowers: yellow blooms in fall and summer
Uses: container plant, cottage garden, cutting garden, easy-to-grow, floriferous, long-blooming

GROWING CONDITIONS for Helianthus annuus

USDA Zones: 1 - 11
Sun exposure: sun
Watering frequency: even moisture - low
Resistant to: deer, verticillium wilt
Soil needs: average, rich and well-drained

Nursery contributed plant descriptions

So carefree, you see them growing along freeways in the central valley of California, this ancestor of the domesticated Sunflower is native to the Western states. Besides being lovely, it’s HEAT and DROUGHT TOLERANT and DEER RESISTANT! Blooming like crazy for 3+ months, the 3-4” flowers bounce around on many branched stems to cheer up your Summer garden. Adored by butterflies, bees and birds. Makes a great show in the garden or you can plant them in 10-15 gallon pots and move them around your deck, patio or outside a window for special effects. To 6’ x 5’ and not fussy about soil, it’s showiest with drainage and some fertility.