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International Dendrology Society

@ids.dendrology

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The International Dendrology Society promotes the study, conservation and enjoyment of trees and woody plants through tours, study days and events.
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by @ids.dendrology
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13 hours ago
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Day 4 IDS tour of Paris. The afternoon at the beautiful arboretum of La Vallée-aux-Loups in the Hauts de Seine. A unique tree this is the mother plant of all weeping Cedars. Planted in 1885 this Cedrus atlantica glauca pendula covers 710m2 of ground. #idsparis2026 #internationaldendrologysocietymemberstour taken in Arboretum de la Vallée-aux-Loups by @ids.dendrology
10
2 days ago
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Day 4 of the IDS tour to Paris A morning at Arboretum Vilmorin. Pteroceltis tatarinowii from China in the Cannabaceae family #idsparis2026 #internationaldendrologysocietymemberstour Pteroceltis tatarinowii from China in the Cannabaceae family Pteroceltis tatarinowii from China in the Cannabaceae family Maclura pomifera Pinus nigra subsp nigra var maritima Parrotia persica Campylotropis macrocarpa Wisteria tunnel Wisteria frame Lunch under the trees Seed head of Platanus x hispanica taken in Arboretum Vilmorin by @ids.dendrology
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2 days ago
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To discuss sponsorship opportunities please write to info@treesandshrubsonline.org We would be delighted to hear from anybody interested in supporting our ongoing work. We are particularly keen to secure funding to update any of a diverse suite of genera that are poorly served by existing horticultural literature. #conifers #nationalconiferweek #TSO #treesandshrubsonline # by @ids.dendrology
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2 days ago
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Day 4 of the IDS tour to Paris A morning at the exceptional collection of Arboretum Vilmorin. Started in 1815 it was originally one of the testing grounds for Vilmorin the famous seed company. New collections are being added every year under the guidance of Nathalie de Vilmorin and a team of experts. Cedrus libani planted in 1815 #idsparis2026 #internationaldendrologysocietymemberstour The Vilmorin house Avenue of Carpinus with garlands of ivy Morus alba ‘Kagayamoe’ known as the Mûrier Platane a tree often used as a small dense shade tree. Alchornea davidii From the Euphorbiaceae family Carya glabra bark Sorbus randaiensis from Taiwan Carya glabra Clerodendron mandarinorum from Vietnam Diospyros lotus bark Quercus ilicifolia Tsuga sieboldii from Japan Torreya californica Berberis koreana the arboretum has a large collection of Berberis given by Olivier Colin one of the advisors of the garden. Quercus muehlenbergii from NE America Acer obtusifolium Diospyros armata Phillyrea latifolia planted in 1815 Huge Chionanthus retusus Juglans hindsii ? taken in Arboretum Vilmorin by @ids.dendrology
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2 days ago
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Day 3 of the IDS tour of Paris An afternoon at the Arboretum of Versailles-Chevreloup part of the Museum National d’Histoire Naturelle. @arboretumchevreloup Quercus libani #idsparis2026 #internationaldendrologysocietymemberstour Quercus libani Paliurus spina-cristi Quercus grisea Avenue of 100 year old Juglans nigra Taxodium distichum ‘Nutans’ Avenue of 100 year old Cedrus libani Picea omorika Picea orientalis Cupressus dupreziana var. atlantica Pinus palustris Taxodium distichum ‘Nutans’ taken in Arboretum de Versailles-Chèvreloup by @ids.dendrology
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3 days ago
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Day 3 IDS tour of Paris A morning in the parc of Versailles around the Grand Trianon with one of the Head Gardener Giovanni Delù #idsparis2026 #internationaldendrologysocietymemberstour Avenue of Tilia cordata planted 6m apart and the two rows are 9m apart Formal gardens of the Grand Trianon Formal gardens of the Grand Trianon Formal gardens of the Grand Trianon Formal gardens of the Grand Trianon Formal gardens of the Grand Trianon Liriodendron tulipifera planted in 1775 Liriodendron tulipifera planted in 1775 Statues in the Carpinus betulus hedge Magnolia grandiflora in the scented garden Paulownia tomentosa in bud and seed Carissa spinosa Magnolia kobus seed Styphnolobium japonicum ‘Pendula’ Styphnolobium japonicum ‘Pendula’ Cedrus libani 30m high from 1840 Quercus robur the oldest tree in Versailles planted in 1668 at the time of Louis XIV 36m high and 5.24 m circumference Styphnolobium japonicum planted for Marie-Antoinette at the Petit Trianon in 1764 taken in Le Grand Trianon, Château de Versailles by @ids.dendrology
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4 days ago
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Last minute places have become available on the IDS Budget tour to Perthshire in Scotland 1-4th of October led by Tom Christian. This area is often known as ‘Big Tree Country’ and with good reason ! Metasequoia, UK champion Sequoiadendron, and red squirrel sightings all guaranteed ! Cost £280 details on the website. Link in bio. taken in Perthshire Scotland by @ids.dendrology
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5 days ago
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Day 2 of the IDS tour of Paris An afternoon visit to the Serres d’Auteuil part of the Jardin Botanique de Paris. @jardinbotaniquedeparis A male Ginkgo biloba tree that produced one branch covered in female fruit #idsparis2026 #internationaldendrologysocietymemberstour A Catalpa speciosa ‘Pulvurulenta’ that fell down in the 1950s and continued growing … The very rare Celtis koraensis The very rare Celtis koraensis The very rare Celtis koraensis The very rare Celtis koraensis Alangium platanifolium Viburnum x rhytidiphylloides Inside the greenhouses Quercus suber Pistacia terebinthus Abies numadica Correct shading for greenhouses Acer monspessulanum taken in Jardin des Serres d'Auteuil by @ids.dendrology
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5 days ago
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Second day of IDS tour of Paris A morning at @domainedecourances guided by our wonderful and energetic host Valentine de Ganay. #idsparistour2026 #internationaldendrologysocietymemberstour Platanus x hispanica from 1783 Valentine de Ganay telling us about this incredible tree Fused branches on Platanus Hydrangea involucrata ‘Yoraku Toma’ The Japanese garden from 1930s Cloudpruned Parrotia persica Cloudpruned Parrotia persica The mill Danse racemosa by @ids.dendrology
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6 days ago
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2nd day of IDS tour of Paris A morning in the beautiful parc of the Chateau de Courances. A Louis XIII Château with a Renaissance Parc Romantique. It has 14 springs and 17 pieces d’eau. #idsparistour2026 #internationaldendrologysocietymemberstour @domainedecourances taken in Château de Courances by @ids.dendrology
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7 days ago
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Day 1 of the IDS tour of Paris An afternoon in the property of an IDS member after a delicious lunch. Calocedrus decurrens #idsparis2026 #internationaldendrologysocietymemberstour Calocedrus decurrens Nyssa sylvatica Carpets of Cyclamen hederifolium Traps on Pines for the Processionary Moth Quercus rhysophylla ‘Maya’ Acer sp. Cryptomeria japonica Quercus ilex hedge Indigofera heterantha Caryopteris clandonensis Walk to dinner across the Seine with Notre Dame in the distance Sunset with the Eiffel Tower by @ids.dendrology
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8 days ago
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