Helianthus 
Flora Frost Helianthus annuus 'Sunny Smile'
| Flower type | Single |
| Leaf margin | Serrate |
| Flower color | Yellow-medium yellow orange-013B; Yellow-medium yellow orange-017B |
| Soil fertility | Special demands |
| Leaf, general shape | Cordate (heart-shaped) |
| Flower diameter | 10 - 11 cm |
| Inflorescence | Capitulum (head) |
| Leaf size | 7,5 - 10 cm |
| soil pH requirement | Alkaline (pH > 7,5); Neutral (pH 6,5 - 7,5) |
| Leaf, main color | Dark green |
| Flower color distribution | Unicolored |
The Helianthus annuus 'Sunny Smile' is a beautiful and vibrant sunflower variety that will surely bring a burst of sunshine to any garden or landscape. With its single, yellow to medium yellow-orange flowers, this sunflower variety is a true delight to behold.
One of the standout features of this sunflower variety is its serrated leaf margin, which adds a unique and distinctive touch to its overall appearance. The leaves themselves are heart-shaped, or cordate in shape, and have a deep green color that provides a lovely contrast to the bright and cheerful flowers.
When it comes to size, the flowers of the Helianthus annuus 'Sunny Smile' are quite impressive, with a diameter ranging between 10 and 11 centimeters. These flowers are arranged in inflorescences called capitulums or heads, which give the sunflower its characteristic appearance.
In terms of soil fertility, this sunflower variety has special demands. It requires soil that is nutrient-rich and well-draining. It is important to ensure that the soil pH is either alkaline, with a pH greater than 7.5, or neutral, with a pH between 6.5 and 7.5. These specific soil conditions will help the 'Sunny Smile' sunflower thrive and reach its maximum potential.
The Helianthus annuus 'Sunny Smile' is an excellent addition to any garden, as it provides a stunning display of color. Its flower color distribution is unicolored, meaning that the petals are all the same shade of yellow to medium yellow-orange. This uniformity adds to the overall visual impact of the plant, creating a beautiful and eye-catching focal point.
Caring for the 'Sunny Smile' sunflower is relatively easy, as long as its specific soil requirements are met. Providing regular watering and ensuring proper sunlight exposure will help optimize its growth and development. Additionally, it is important to provide support, such as stakes or cages, to prevent the tall sunflower stalks from bending or breaking under the weight of the flowers.
In conclusion, the Helianthus annuus 'Sunny Smile' is a stunning sunflower variety that will brighten up any garden or landscape with its beautiful and vibrant flowers. Its serrated leaves, heart-shaped foliage, and impressive flower size make it a standout plant. By providing the right soil conditions and care, this sunflower variety will flourish and become a true spectacle in any outdoor space.
Market availability index by month:
| Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. |
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| - | - | 1 | 3 | 4 | 4 | 3 | 3 | 1 | 1 | 1 | - |