Hellebore 
Flora Frost Helleborus x sternii 'Silver Shadow'
| Flower type | Single |
| Leaf margin | Serrate |
| Winter hardness | Good (USDA-zone 5, 6); Reasonable (USDA-zone 7) |
| Flower color | Green-medium brown green-146D |
| Flower diameter | 3,5 - 4 cm |
| Plant height | 20 - 30 cm; 20 - 30 cm |
| Flowering month(s) | January; February; March |
| Leaf size | 5 - 7,5 cm |
| soil pH requirement | Neutral (pH 6,5 - 7,5); Slightly acidic (pH 4,5 - 6,5); Alkaline (pH > 7,5) |
| Light conditions | Semi-shades |
| Leaf division | Tricompound |
| Leaf, main color | Green grey |
| Leaf colour, pattern | Unicolored |
| Flower color distribution | Unicolored |
| Moisture requirements | Well-drained; Moist |
| Soil type | Humus rich |
Helleborus x sternii 'Silver Shadow', commonly known as Hellebore, is a stunning perennial flower that gardeners adore for its unique features and ability to bring color during the winter months. This particular variety showcases beautiful single flowers with a serrate leaf margin, making it a showstopper in any garden.
One of the biggest advantages of 'Silver Shadow' is its winter hardiness. It thrives in USDA zones 5, 6, and 7, with good winter hardiness in zones 5 and 6 and reasonable hardiness in zone 7. This means that gardeners in these zones can count on this plant to survive and bring joy year after year.
The flower color of 'Silver Shadow' is an eye-catching medium brown green, with a code of 146D according to the Royal Horticultural Society's color classification system. The flowers have a diameter of 3.5 to 4 cm, adding a delicate touch to any garden.
In terms of plant height, 'Silver Shadow' reaches between 20 and 30 cm, making it a great choice for borders or container gardening. The compact size of this variety allows it to fit seamlessly into any garden design.
When it comes to flowering, 'Silver Shadow' does not disappoint. The blooming period starts in January and continues through February and March. This early flowering trait is highly valued among gardeners who seek color during the coldest months of the year.
The leaves of 'Silver Shadow' are tricompound and have a beautiful green-grey color. The main color is unicolored, providing a sleek and elegant look to the plant. This variety has a leaf size ranging from 5 to 7.5 cm, adding depth and texture to the overall appearance.
To thrive, 'Silver Shadow' requires well-drained and slightly acidic to alkaline soil. It can tolerate a slightly higher pH level, ranging from 6.5 to 7.5. However, it's important not to exceed a pH of 7.5 as this may negatively impact the plant's health.
When it comes to light conditions, 'Silver Shadow' prefers semi-shade. It can tolerate some direct sunlight, but it thrives best when provided with partial shade throughout the day.
Moisture requirements for 'Silver Shadow' are flexible, as it can adapt to both well-drained and moist soil types. However, it's important to avoid waterlogged conditions, as this can lead to root rot and other issues.
Overall, Helleborus x sternii 'Silver Shadow' is an exceptional plant that brings beauty and color to winter gardens. Its unique flower color, compact size, and winter hardiness make it a must-have for any gardener seeking a touch of elegance during the colder months. With its resilience and striking features, this variety is sure to be a standout addition to any garden or landscape design.
Market availability index by month:
| Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 2 | 1 | - | - | - | - | 1 | 1 | 3 | 4 | 3 |