Calluna 
Flora Frost Calluna vulgaris 'Red Sun'
| Winter hardness | Excellent (USDA-zone 1,2,3,4) |
| Flower color | Purple-dark purple-064A |
| Soil fertility | Not very demanding |
| Leaf, general shape | Needle-shaped |
| Flower diameter | Very small |
| Plant height | 10 - 20 cm |
| Leaf size | Very small |
| soil pH requirement | Acid (pH < 4,5); Slightly acidic (pH 4,5 - 6,5) |
| Light conditions | Sunny |
| Plant, growth type | Erect |
| Leaf, main color | Dark green |
| Flower color distribution | Unicolored |
| Moisture requirements | Well-drained |
| Soil type | Sandy; Humus rich; Peaty |
Heather, also known as Calluna vulgaris 'Red Sun', is a popular flowering plant that thrives in cold climates, making it an excellent choice for gardens in USDA zones 1, 2, 3, and 4.
One of the standout features of this particular variety is its flower color, which ranges from purple to dark purple (hex code 064A). The small, delicate flowers add a touch of color to the winter landscape, when most other plants are dormant.
In terms of soil fertility, heather is not very demanding, making it a low-maintenance option for gardeners. It can adapt well to different soil types, including sandy, humus-rich, and peaty soils. However, it thrives in slightly acidic to acid soils, with a pH range of less than 4.5 to 6.5.
The leaves of the heather plant are needle-shaped, characteristic of the plant's genus. They have a dark green color, providing a beautiful contrast against the vibrant flowers. With a height ranging from 10 to 20 cm, heather is a compact plant that can be easily incorporated into various garden designs.
Despite its small stature, heather offers a visual impact with its unicolored flower color distribution. The tiny flowers create a carpet-like effect, adding texture and beauty to any landscape. It is an erect-growing plant, meaning it grows vertically in an upright manner, giving it a neat and tidy appearance.
In terms of moisture requirements, heather prefers well-drained soil. It is crucial to avoid waterlogged conditions, as excessive moisture can lead to root rot. Therefore, it is recommended to plant heather in areas with good drainage and avoid overwatering.
Heather is known for its excellent winter hardiness, making it a reliable choice for cold climates. With proper care and protection from harsh winter conditions, this plant can thrive even during the harshest of winters.
If you are looking for a low-maintenance, cold-hardy plant with beautiful purple flowers and attractive needle-shaped leaves, Calluna vulgaris 'Red Sun' is an excellent choice. Whether you want to add color to a winter garden or create a vibrant heather bed, this plant will undoubtedly enhance the beauty of any landscape.
Market availability index by month:
| Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. |
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| - | - | - | - | - | 1 | 1 | 3 | 4 | 4 | 1 | - |