May Appeal 2026
Please help keep TSO growing!
IDS Trees and Shrubs Online depends on generous donations to continue to make reliable information on hardy woody plants freely available to everyone, everywhere.
If you haven’t already, please consider donating to our May Appeal. If everyone who uses TSO during May 2026 gives just £10, we would cover our costs for a whole year, enabling us to accelerate our work!
Advanced Search
Search notes
Enter scientific names in the Genus, species or infraspecific name box to search for articles (e.g. “Quercus”). The results will include synonyms.
Enter words in the Common name box to find articles about trees or shrubs with the term in their common names (e.g. “Oak”, “Red”, “American”).
Use the Text of article box to find words that occur in the main text of the article. If you have tried to find a tree or shrub using the boxes above, and you have been unsuccessful, try searching here. You can also use this box to search for, e.g., property names, people, collector numbers, etc.
You may enter terms in more than one box, and the the results will find articles that match the terms in all of the boxes.
Searches look for the occurrence of all entered words at any position in the text.
You can also look up trees and shrubs in the Plant Index.