Appendix 8 Flowering times
Records in willow arboretum Lebbeke (2020), waiting basin Fochel-East with additions from other locations.
Trend: flowering comes earlier and earlier.
January Salix koriyanagi ♂ and ♀; Salix gracilistyla Melanostachys ♂
February Salix gracilistyla Melanostachys ♂; Salix gracilistyla 'Mount Aso' ♂; Salix gmelinii 'Korso' ♂; Salix udensis 'Sekka' ♂; hybrid Salix udensis 'Sekka' x Salix viminalis; Salix aegyptiaca ♂; hybrid Salix udensis 'Sekka' x Salix caprea ♀; Salix schwerinii
March Salix x bögelsackii ♂; Salix irrorata ♂; Salix caprea; Salix x erdingeri ♂ ; Salix babylonica 'Crispa' ♂; Salix gmelinii clone 'Gewone kletters' ♀; Salix gmelinii clone 'Kattekletters' ♀ ; Salix x capreola ♀; Salix x smithiana ♂; Salix x wimmeriana ♂; Salix x confinis ♀ and ♂; Salix purpurea ssp. lambertiana ♀; Salix apennina ♂; Salix eriocephala ♂; Salix adenophylla ♀; Salix cinerea ssp. oleifolia ♀; Salix daphnoides ♂; Salix acutifolia ♂; Salix viminalis ♀; Salix eleagnos ♀
April Salix x friesiana ♀; Salix cinerea ♂; Salix repens ♀; Salix appendiculata ♂; Salix x quercifolia ♂; Salix x calodendron ♀; Salix x dichroa; Salix myrsinifolia ♂; Salix triandra; Salix x leiophylla ♀; Salix x multinervis ♂ and ♀; Salix bicolor ♂
May Salix *aurita ♀; Salix x erythroflexuosa ♀; Salix x holosericea; Salix x mollissima ♀; Salix repens ♀; Salix babylonica tortuosa ♂; Salix x fragilis ; Salix x fragilis var. furcata ♂; Salix alba
June Salix triandra; Salix x meyeriana ♀; Salix alba
July Salix pentandra ♀; Salix triandra; Salix exigua ♂; S. x simulatrix (S. arbuscula x herbacea) ♂
August Salix pentandra ♀
September Salix bockii
October
November
December
If not listed male or female, it is currently unknown.
Some taxa (including Salix triandra 'Semperflorens') may flower in several months.
*S. aurita has a fairly long flowering period
Climatic conditions can shift flowering times somewhat.
Several Salix species and their hybrids have male catkins with red or orange anthers. Here are some common examples:
Willows with red anthers
• Salix daphnoides – Often deep red at the beginning of flowering.
• Salix acutifolia – Anthers can be reddish when opening.
• Salix aegyptiaca – Intense reddish purple anthers.
• Salix myrsinifolia – Sometimes red-tinged anthers, depending on the variety.
• Salix purpurea – Some subspecies show a red hue.
• Salix gracilistyla Mount Aso and melanostachys
...
Willows with orange anthers
• Salix triandra – Often orange-red anthers in the early stages.
• Salix viminalis – Can show orange tones before anthesis.
• Salix caprea – Sometimes orange in early flowering.
• Salix cinerea
• Salix cinerea ssp oleifolia
....
The exact color may vary depending on the maturity of the flowers.
De imker drachtkalender: http://www.imkeropleidingensalland.nl/imker-worden/drachtplanten-kalender/
Bijenplanten_web boek bestuivers.nl.pdf : file:///F:/G%20e%20b%20r%20u%20i%20k%20e%20r%20s/admin/Documents/wilgen/wilgen%20alles/2013/Bijenplanten_web%20boek%20bestuivers.nl.pdf
Calendar blooms in New Zealand:
insects also visit exotic willows https://www.miragenews.com/uconn-researcher-promotes-willow-planting-1310330/
