Perennial cornflower
Centaurea montana
- Flowering period
- May–July
- Nectar
- gut
- Pollen
- mittel
The perennial cornflower flowers from May to July with deep blue, fringed ray florets around a purple centre. It comes from the low mountain ranges and the Alps and is one of the earliest knapweeds in the garden. In addition to the nectar in the flowers, there are small nectar glands on the bracts, which are also visited. British measurements give around 632 micrograms of sugar per flower per day.
Sources (5)
- Filipiak, Walczyńska, Denisow, Petanidou, Ziółkowska (2022): Phenology and production of pollen, nectar and sugar in 1612 plant species from various environments
- Tew, Baldock, Morten, Bird, Vaughan, Memmott (2023): A dataset of nectar sugar production for flowering plants found in urban greenspaces
- Centaurea montana, Wikipedia
- Centaurea montana, Euro+Med PlantBase über PESI
- Centaurea montana, GBIF Backbone Taxonomy