Helianthus x laetiflorus

Also Known As

Helianthus laetiflorus
Showy Sunflower

Plant type

annual / biennial

size

H: 4'-8'
W: 2'-4'

planting zones

4a-10b

More Options

Helianthus x laetiflorus plant details

Helianthus x laetiflorus 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, clay, rich and well-drained soil. A good option if you're seeking something heat tolerant and verticillium wilt resistant.

CHARACTERISTICS OF Helianthus x laetiflorus

Plant type: annual / biennial
Plant family: asteraceae
Foliage: deciduous green
Mature size: 2 FT - 4 FT - wide, 4 FT - 8 FT - tall
Flowers: yellow blooms in fall and summer

GROWING CONDITIONS for Helianthus x laetiflorus

USDA Zones: 4a - 10b
Sun exposure: sun
Watering frequency: even moisture - low
Resistant to: heat and verticillium wilt
Soil needs: average, clay, rich and well-drained

Nursery contributed plant descriptions

Showy sunflower, a naturally occurring cross between H. rigidus and H. tuberosus, open clusters of 12cm flowers atop 2m stems, nice for late season color. Z 4

By: Arrowhead Alpines

Aptly named, this is one of the largest and showiest of all the native sunflowers. The high contrast between the bright yellow petals and dark black centers give this sunflower a distinctive appearance. Blooming late in the summer, the seeds ripen just in time for migrating birds to gorge on them as they make their long journey south. Growing three to six feet tall, it spreads rapidly by rhizomes, so give this plant some room. Plant in patches for best effect. Grows in dry sand, loam and clay. Hardy to Zones 3 - 8.

By: Prairie Nursery

Native to the Midwest, this is a BIG honking perennial Sunflower, growing 4’ to 8’ tall & bearing lots of yellow blooms on long stems very late in the year - August thru Fall. Since it spreads by rhizomes (like H. maximillianii) it may not be suitable for small gardens, but it is useful for big, open areas you don’t want to water or take care of. Heat, drought & clay tolerant!