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 ?
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
April
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
Viscum album ? ? ? ? ? ? ?   3.4 15.4   9.4 13.4 23.4   7.4 13.5 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
Prunus spinosa ? ? ? ? ? ? ? ? ? ? ? ?   7.4 26.4 23.4 19.4
Larix kaempferi ? ? ? ? 15.5 17.4 ?   6.4 - 18.4 28.4 27.4 23.3 19.4 20.4 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 ?
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
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 ?
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 ?
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   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 ? ?
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
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 ?
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
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 17.5
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
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
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
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
Ilex aquifolium ? ? ? ? 17.5   2.5 19.5 ? ?   2.5 ? 10.6   2.5 17.5 27.5 ?
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
June
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   7.6
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
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
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
Genista pilosa ? ? ? ? ? ? ? ? ? ? ? 11.6 ? ? ? ?
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
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
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
Spiraea alba ?   9.6 ? ? ? ? ? ? ?   2.6 23.6 30.6 12.6 26.6 28.6 17.6
July
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
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


Translations

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