Dates of First Tree and Shrub Flowers


Species 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
March
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
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
April
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
Viscum album ? ? ? ? ? ? ?   3.4 15.4   9.4 13.4 23.4   7.4 13.5 12.4
Larix kaempferi ? ? ? ? 15.5 17.4 ?   6.4 - 18.4 28.4 27.4 23.3 19.4 20.4
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
Prunus spinosa ? ? ? ? ? ? ? ? ? ? ? ?   7.4 26.4 23.4
Pinus sylvestris ? ? ?   9.5 12.5 29.4 13.5 ? ? 26.4 ? ? ? ? ?
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
Fraxinus excelsior ? 10.5 12.5 -   9.5 25.4   7.5 -   8.5   3.5   7.5   9.5 14.5 28.4 ?
May
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
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
Pseudotsuga menziesii ? ? ? ? ?   6.5 ? 23.5 ? 24.4 - -   2.5 ? ?
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
Betula pubescens ?   2.5 28.4 -   9.5 - 12.5 -   9.5 10.5 ? ? 11.4 ?   5.5
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
Salix alba ? ?   9.5 28.4   9.5 25.4 ? 24.4   1.5 26.4 ?   3.5   2.5 22.4   7.5
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
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
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
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
Fagus sylvatica   9.5   3.5   4.5 -   6.5 24.4 - 23.4   1.5 17.4 - 19.5 20.4 -   8.5
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
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 ?
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
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
Acer pseudoplatanus ? ? ? ? 18.5 27.4 ? ? 15.5 25.4 ? ?   9.4 21.4 13.5
Picea abies ? ? ? - 12.5 - - 19.5 ? 22.4 - -   2.5 10.5 13.5
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
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
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
Ilex aquifolium ? ? ? ? 17.5   2.5 19.5 ? ?   2.5 ? 10.6   2.5 17.5 27.5
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
June
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
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
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
Sorbus aria ? 22.5 29.5 - 29.5 11.5 - 22.5   1.6 11.5 ? ? 19.5 ?   5.6
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
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
Genista pilosa ? ? ? ? ? ? ? ? ? ? ? 11.6 ? ? ?
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
Spiraea alba ?   9.6 ? ? ? ? ? ? ?   2.6 23.6 30.6 12.6 26.6 28.6
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
July
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
Castanea sativa ? ? ? ? 14.7   3.6 21.7 26.7 20.7 27.6 20.7 13.7 21.6   6.7 25.7
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


Translations

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