Helping You Become a More Successful Gardener
Plant Search
Ernst Benary® Inc.
Asteraceae
HELIANTHUS annuus 'Valentine'
Annual Sunflower
Bright lemon yellow sunflowers with dark centers cover ‘Valentine’ in the heat of summer. The blooms are strong-stemmed, excellent for cutting and borne on medium-sized, well-branched plants.
The sunflower is one of the most cheerful and distinctive garden flowers. Its big bold daisies track the sun, hence the common name. This warm season annual is uncommonly easy to grow and economically important for the production of sunflower seeds, for human consumption, cooking oil and birdseed, as well as cutflowers for the florist’s industry. It is a New World native that exists throughout the whole of North America down to Central America. Natural populations can vary widely in height but most are tall, upright with multiple side branches that extend from a sturdy central stem.
Sunflower leaves are very distinctive. They are large, medium green and heart-shaped with a rough and slightly hairy surface. Sunflowers grow and bloom when temperatures are warm and summery. Mature plants produce huge daisies with a broad “eye” of disc flowers surrounded by lots of ray petals. Bloom color is typically golden yellow but lemon yellow, bronze, burgundy, red, orange and white cultivars are also available. The fresh flowers draw lots of insect pollinators, including bees and butterflies. It is essential to keep the spent flowers up because the seeds within the drying heads are beloved by birds and mammals.
Grow sunflowers in full sun and average soil with good drainage. It is best to directly sow the seeds in the ground in the late spring. Tall plants with few side branches may require staking—sunflowers often fall when subjected to high winds and heavy rain. After flowering and setting seed, sunflower plants die, so they are not long-lived. If you desire continuous sunflowers, plant seeds every two weeks in succession until midsummer. These outstanding annuals make superb additions to cutting garden or vegetable plots. Children also love them because they are fun to plant and grow. Sunflower heads can also be cut with their seeds intact, dried indoors and brought outside to feed wildlife in winter.
Sunflowers emit a substance from their roots and germinating seeds that inhibits the germination of other seeds around them.
12 - 1
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Annual
Full Sun
4'-5' / 1.2m - 1.5m
2'-3' / 0.6m - 0.9m
Early Summer, Summer, Late Summer, Early Fall, Fall, Indeterminate
North America, Mexico, Central America
Neutral, Alkaline
Well Drained
Clay, Loam, Sand
Very Fast
Drought Tolerant, Average Water
Upright/Erect
Summer, Fall
Showy
Light Yellow, Lemon Yellow, Brown
Bicolor
Chocolate, Ivory, Black
Striped/Striated
Green
Yes
No
Single
Coarse
Matte
Cutflower, Edible, Herb / Vegetable, Mixed Border, Wildflower
Birds, Butterflies
© 2006-2021 Preferred Commerce. All Rights Reserved.
