Aster 
Flora Frost Aster (Novi-belgii Grp) Henri I Blue
| Leaf tip | Pointed/acute |
| Flower type | Double (pleniflorous) |
| Leaf margin | Entire |
| Winter hardness | Good (USDA-zone 5, 6) |
| Flower color | Purple-medium blue violet-090C |
| Leaf, general shape | Linear |
| Flower diameter | 2,5 - 3 cm |
| Plant height | 60 - 70 cm; 70 - 80 cm; 20 - 30 cm |
| Inflorescence | Capitulum (head) |
| Flowering month(s) | September; October; November |
| Leaf size | 5 - 7,5 cm |
| Light conditions | Sunny |
| Leaf, main color | Dark green |
| Flower color distribution | Unicolored |
| Moisture requirements | Moist; Well-drained |
The Aster (Novi-belgii Grp) Henri I Blue, also known as Michaelmass Daisy or Michaelmas Daisy, is a beautiful flowering plant that adds a burst of color to any garden or landscape. With its double (pleniflorous) flower type and stunning purple-medium blue violet color, this variety is sure to catch the eye of any observer.
One of the distinguishing features of the Aster Henri I Blue is its pointed/acute leaf tip and entire leaf margin. The leaves are linear in shape, measuring approximately 5-7.5 cm in size. The overall leaf color is a rich, dark green, which provides a contrasting backdrop to the vibrant flowers.
In terms of size, the Aster Henri I Blue can reach a height of 60-70 cm, 70-80 cm, or 20-30 cm, depending on the specific variety. This makes it suitable for various garden designs and landscaping preferences. The plant forms inflorescences in the form of capitulum heads, which contain multiple flowerheads.
One of the notable characteristics of this aster is its robust winter hardiness. It can withstand USDA zones 5 and 6 without issue, making it an excellent choice for colder regions. It thrives in sunny light conditions and requires moist, well-drained soil to flourish. This makes it important to provide adequate watering without allowing the soil to become waterlogged.
The Aster Henri I Blue blooms during the months of September, October, and November. Its flowering period aligns with the time of Michaelmas, a religious feast day celebrating the Archangel Michael. The flowers, with a diameter of 2.5-3 cm, create a stunning display when they come into full bloom.
The flower color distribution of the Aster Henri I Blue is unicolored, with the rich purple-blue hues covering the entire petal. This creates a visually striking appearance and makes it a standout in any garden or floral arrangement.
Overall, the Aster Henri I Blue is a versatile and aesthetically pleasing plant that brings beauty and color to any garden or landscape. Its robust winter hardiness, stunning flower color, and comfortable height make it a popular choice among gardeners and landscaping enthusiasts. Whether used in borders, containers, or as cut flowers, this aster variety is a reliable and visually appealing choice.
Market availability index by month:
| Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. |
|---|---|---|---|---|---|---|---|---|---|---|---|
| - | - | - | - | 1 | 1 | 1 | 3 | 4 | 1 | - | - |