|
Available in a variety of colors and heights
up to 10 feet tall. A true sun worshipper, its head follows the sun
as it crosses the sky. Sunflowers require plenty of water and are
known for literally sucking soil dry, which can be a problem for
neighboring plants. Sow seeds in fertile, rich soil directly where
they are to grow (vs. transplanting). Perfect for kids gardens
because of the plant's sheer size and rapid growth. Dried seed heads
are favorites of birds and butterflies. Petals and seeds are edible
for us, too. |
|
 |
|
Family |
Asteraceae |
|
Genus |
Helianthus L. |
|
Species |
Helianthus annuus L. -
Common sunflower |
|
Plant Category |
Annual, Biennial, and landscape |
|
Height |
9 ft |
|
Width |
Undefined |
|
Shape & Orientation |
Erect |
|
Active Growth Period |
Spring and summer |
|
Bloom Time |
Late Summer to Late Fall |
|
Growth Rate |
Rapid |
|
Growth Form |
Single Stem |
|
Flower Characteristics |
Long lasting, showy |
|
Flower Color |
Yellows and whites |
|
Leaf Retention |
None |
|
Foliage Color |
Green |
|
Of Note |
May need staking for extra support |
|
Tolerances |
Deer, heat, and humidity |
|
 |
|
USDA Hardiness Zone |
3 to 8 |
|
AHS Heat Zone |
Not defined |
|
pH Range |
5.5 to 7.8 |
|
Frost-Free Days |
80 minimum |
|
Minimum Temperature |
52°F |
|
Water Range |
Normal to moist |
|
Precipitation Needed |
12 to 60 |
|
Drought Tolerance |
Medium |
|
Light Tolerance |
Part to full sun |
|
Shade Tolerance |
No shade |
|
Salinity Tolerance |
Low |
|
Soil Texture |
From sand to loam |
|
Fertilization Needed |
Low |
|
 |
|
Bloom Period |
Summer |
|
Fruit/Seed Begins |
Summer |
|
Fruit/Seed Ends |
Fall |
|
Propagated By |
Seed |
|
|
|
|
click map for USDA site for
Common Sunflower
 |
click map to use USDA
database
 |
