International Dendrology Society
Analysis
International Dendrology Society is a registered charity in England and Wales, based in Kington. It was registered in May 2018, 8 years ago. Its declared purposes cover education/training, arts/culture/heritage/science and environment/conservation/heritage, which this site groups under arts, culture, heritage and science. Legally it is a charitable incorporated organisation (CIO). It says it makes grants to individuals, makes grants to organisations and provides advocacy/advice/information.
In the financial year ending September 2025, International Dendrology Society reported income of £727k and spending of £354k, leaving 51% of income unspent that year. Across the 5 years on record, from September 2021 to September 2025, income grew from £136k to £727k (+434%), an average of +52% a year. The sharpest change came in the year to September 2025, when income rose by 102%. Over the whole period it spent 69% of the income it received.
Among 17,634 England and Wales charities whose main cause is arts, culture, heritage and science and that reported income, International Dendrology Society sits at the 94th percentile: it is larger than about 94% of them. Against every charity in England and Wales with reported income it ranks in the 92nd percentile. Charities of a similar size with the same main cause include The Strawberry Hill Trust (£726k), London Vocational Ballet School (£727k) and Modern Art Press (£726k).
In its latest detailed accounts, income came from donations and legacies 86%, charitable activities 9.2% and investments 4.4%. Charitable activities took 82% of spending and raising funds 13%. Reserves of £382k would cover about 12 months of spending at that rate. It employed 7 people.
Income and spending
Where the income comes from
- Donations 86%
- Charitable activities 9.2%
- Investments 4.4%
In the charity's own words
Operates worldwide, with members in 50 countries. Organises tours and study periods, provides bursaries for dendrology students , produces a Yearbook and Newsletter and maintains a Website, alerts authorities where arboreta or natural plant resources are under threat, publishes the Website Trees and Shrubs Online, incorporating New Trees and Bean's Trees and Shrubs Hardy in the British Isles.
Similar-sized charities, same cause
| Charity | Location | Income |
|---|---|---|
| The Strawberry Hill Trust | Twickenham | £726k |
| London Vocational Ballet School | London | £727k |
| Modern Art Press | London | £726k |
| Brass Bands England | Stocks Lane | £728k |