Dates of First Tree and Shrub Flowers


Species 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
February
Corylus avellana 10.2   6.3   5.2 19.3 26.3 20.1 28.1 15.3 18.3 14.2   1.3 13.4 12.2   5.3   6.2   2.3 12.1 14.2 22.1 21.2 25.1
March
Alnus glutinosa 14.2 13.3 17.2 19.3   2.4   2.3   8.3 21.3 24.3 21.3   1.4 18.4 20.3 ? 18.3 ?   9.4 <21.4     2.3 25.2 13.3
Salix caprea ? ? ? 19.3   2.4 22.2 25.2   3.4   6.4 20.3 22.3 18.4 14.3   7.4   2.4 27.3   9.4 20.3 18.3 23.3 23.3
April
Salix cinerea   4.4   4.4 31.3 19.3 22.4   7.4 23.4 10.4 17.4   9.4   1.4 25.4   4.4 19.4 20.4 ? 19.4   7.4   6.4   9.4   9.4
Larix kaempferi ? ? ? ? 15.5 17.4 ?   6.4 - 18.4 28.4 27.4 23.3 19.4 20.4 20.4 15.4 - 11.4 ? ?
Viscum album ? ? ? ? ? ? ?   3.4 15.4   9.4 13.4 23.4   7.4 13.5 12.4 ? 12.4 ? ? ? ?
Prunus avium 25.4 21.4 27.4 26.4   5.5 15.4   4.5 19.4 29.4 12.4 27.4   6.5   7.4 24.4   6.5 15.4 21.4 18.4 11.4 26.4 19.4
Populus nigra ? 31.3   1.4 20.3 27.4 11.4 ? 10.4 25.4 ?   4.4 27.4   6.4 20.4   8.5 ? 14.4 19.4 ? ? ?
Prunus spinosa ? ? ? ? ? ? ? ? ? ? ? ?   7.4 26.4 23.4 19.4 19.4 19.4 10.4 20.4 ?
Fagus sylvatica   9.5   3.5   4.5 -   6.5 24.4 - 23.4   1.5 17.4 - 19.5 20.4 -   8.5 ? 25.4 - 20.4 ? ?
Larix decidua ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 20.4 ? ? ? ?
Salix alba ? ?   9.5 28.4   9.5 25.4 ? 24.4   1.5 26.4 ?   3.5   2.5 22.4   7.5 ? 22.4 15.4 15.4 21.4 ?
Vaccinium myrtillus 20.4 22.4   4.5 26.4   7.5 12.4   4.5 21.4 30.4 15.4 22.4   7.5   4.4 19.4   2.5   8.4 20.4 10.4 12.4 23.4 ?
Betula pendula   7.4 15.4 23.4 28.4 28.4 17.4   6.5 12.4 25.4 15.4   5.4   3.5   4.4 19.4   4.5 ? 19.4 20.4 12.4 23.4 ?
Picea abies ? ? ? - 12.5 - - 19.5 ? 22.4 - -   2.5 10.5 13.5 ?   1.5 ? 25.4 ? ?
Populus tremula ? 28.3 14.3 19.3   6.4 27.2   8.3   4.4 17.4 24.3   5.4 18.4   5.4 21.4   7.5 ? 14.4 21.4 ? 26.4 ?
Pinus sylvestris ? ? ?   9.5 12.5 29.4 13.5 ? ? 26.4 ? ? ? ? ? ? ? ? ? ? ?
Betula pubescens ?   2.5 28.4 -   9.5 - 12.5 -   9.5 10.5 ? ? 11.4 ?   5.5 ? 29.4 ? ? 27.4 ?
Sambucus racemosa   7.5 28.4   4.5   2.5   9.5 17.4   7.5 28.4   2.5 20.4 30.4 15.5 12.4   9.5   7.5 11.5 22.4 22.4 24.4 20.5 28.4
Salix aurita ? 20.4 23.4 19.4   2.5 14.4   1.5 20.4 25.4 17.4 21.4 29.4   9.4 23.4 28.4 ? 23.4 21.4 ? 28.4 ?
Cytisus scoparius 10.5   4.5   9.5 11.5 15.5 14.4   4.5   8.5 24.5 26.4   7.5 27.5 15.4   9.5 11.5 12.5 29.4 13.5 20.4   7.5 29.4
May
Prunus padus   9.5 30.4 11.5   3.5 11.5 25.4   9.5 26.4   9.5 20.4   3.5 12.5 21.4   7.5   9.5   9.5 28.4 29.4 22.4 10.5   1.5
Pseudotsuga menziesii ? ? ? ? ?   6.5 ? 23.5 ? 24.4 - -   2.5 ? ? ? ? ? ? ? ?
Sorbus aucuparia 18.5 12.5 22.5 24.5 21.5   3.5 19.5 13.5 28.5   1.5 22.5   3.6 11.5 18.5 25.5 21.5   9.5 22.5   7.5   4.6 12.5
Acer platanoides   3.5   1.5 23.4 28.4   9.5 19.4 - 21.4   5.5 19.4 29.4   6.5 16.5 19.4   2.5 ? 20.4 23.4 <8.5 13.5 ?
Fraxinus excelsior ? 10.5 12.5 -   9.5 25.4   7.5 -   8.5   3.5   7.5   9.5 14.5 28.4 ? ? 21.4 ? 24.4 14.5 ?
Juniperus communis ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 14.5 ? ? ?
Crataegus laevigata 19.5 20.5 20.5 23.5 23.5 27.4 19.5 16.5 25.5 29.4 13.5 28.5   1.5 12.5 15.5 17.5   6.5 11.5   1.5 24.5 18.5
Crataegus monogyna 19.5 20.5 29.5 28.5 29.5 29.4 19.5 17.5   2.6   3.5 22.5 10.6   9.5 21.5 28.5 20.5   8.5 11.5   6.5   1.6 18.5
Viburnum opulus 26.5   3.6 11.6 13.6 16.6 20.5   3.6 31.5 12.6 22.5   1.6 19.6 29.5 10.6   9.6 30.5 24.5   3.6 27.5 13.6 18.5
Genista anglica 25.4 22.4 25.4 30.4   9.5 17.4   6.5 27.4 28.4 15.4 30.4 11.5 18.4   4.5   7.5 22.5 27.4 20.4   7.5 19.5 ?
Malus sylvestris 11.5   7.5 15.5 19.5 15.5 25.4 11.5   8.5 27.5 24.4 13.5 28.5 30.4   9.5 ? ?   5.5 12.5   3.5 20.5 ?
Sorbus aria ? 22.5 29.5 - 29.5 11.5 - 22.5   1.6 11.5 ? ? 19.5 ?   5.6 ? <5.6 <12.6   20.5 ? ?
Sambucus nigra 11.6   9.6 15.6 19.6 16.6 12.5   5.6   7.6 12.6 25.5 30.5 25.6   5.6 15.6   8.6   7.6 27.5 12.6   3.6 13.6 24.5
Acer pseudoplatanus ? ? ? ? 18.5 27.4 ? ? 15.5 25.4 ? ?   9.4 21.4 13.5 ?   2.5 ?   8.5 28.5 ?
Quercus robur 10.5   3.5   5.5 10.5   8.5 25.4 12.5   4.5   8.5 25.4   7.5 18.5 28.4 10.5 11.5 ? 26.4 - 23.4 31.5 ?
June
Rosa canina ? ? 23.6 18.6 17.6   6.6 31.5   8.6 16.6 30.5 15.6 30.6   9.6 19.6 26.6 14.6   6.6 16.6   8.6 21.6   1.6
Vaccinium oxycoccos 19.5 15.5 17.5 21.5   1.6   5.5 19.5 20.5 15.5 10.5 24.5 13.6 18.5 25.5   4.6 11.6 17.5 31.5 18.5   1.6 ?
Aesculus hippocastanum 19.5 10.5 20.5 22.5 16.5 26.4 23.5 20.5 27.5 10.5 19.5 27.5 30.4 21.5 21.5 26.5 17.5 12.5   8.5   8.6 ?
Genista pilosa ? ? ? ? ? ? ? ? ? ? ? 11.6 ? ? ? ? ? ? ? ? ?
Ilex aquifolium ? ? ? ? 17.5   2.5 19.5 ? ?   2.5 ? 10.6   2.5 17.5 27.5 ? 17.5 25.5 29.5 13.6 ?
Frangula alnus   9.6   4.6 10.6 10.6 11.6 18.5   1.6   2.6 11.6   9.5 30.5 18.6 22.5 31.5   5.6 14.6 17.5 14.6   8.6 13.6 ?
Vaccinium vitis-idaea 26.5 20.5 22.5 16.5 18.5   6.5 20.5 18.5   3.6   7.5 26.5 11.6 19.5 27.5   4.6 11.6 14.5 26.6 30.6 15.6 ?
Lonicera periclymenum 21.6   7.6 19.6 18.6 21.6   3.6 11.6 16.6 19.6   2.6 15.6   2.7 13.6 19.6 10.7 12.6 21.6 25.6 21.6 13.7 17.6
Spiraea alba ?   9.6 ? ? ? ? ? ? ?   2.6 23.6 30.6 12.6 26.6 28.6 17.6 17.6 20.6 15.6 20.6 ?
July
Erica tetralix 17.6 11.6 17.6 20.6 23.6   7.6 17.6 <24.6   25.6   6.6 28.6   4.7 15.6 18.6 29.6 11.6 16.6 26.6 11.6   6.7 ?
Castanea sativa ? ? ? ? 14.7   3.6 21.7 26.7 20.7 27.6 20.7 13.7 21.6   6.7 25.7   2.7   2.7   4.7 11.7 ? ?
Calluna vulgaris 21.7   5.7 18.7 <1.8 26.7 17.7 22.7 22.7 16.7 24.6 21.7 30.7 26.7   4.7 27.7 22.7   6.8   7.8   1.8 ? ?


Translations

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