Across
- 6. Na Fianna’s partner company for the bike library (7)
- 7. One of Santa's reindeers, also part of solar system (6)
- 8. Organisation that promotes the annual winter Garden Bird Survey (9,7)
- 11. Irish writer/TV presenter known for his closeness to nature and the Irish language who passed away in 2025 (7,5)
- 13. Country where Christmas tree tradition originated (7)
- 16. New type of heating system running off electricity (4,4)
- 17. Country that hosted the most recent COP (UN climate negotiations) (6)
- 18. Frog that sings 'It’s not easy being green’ (6)
- 19. Number of counties with Green in their GAA county colours (5)
- 20. Primates that were extensively studied by well-known ethologist and conservationist Jane Goodall who died in 2025 (11)
- 21. Great oaks grow from little ones (6)
- 22. Large wild cat that used to roam Ireland (4)
Down
- 1. Team in green, beaten by Dublin County hurlers in June (8)
- 2. Not a native bird in Ireland but a relatively common Irish butterfly (7)
- 3. First name of current Irish Minister for Climate, Energy and the Environment (7)
- 4. Glasnevin river that flows from Co. Meath (5)
- 5. Big public transport project for Dublin that got planning permission this year (9)
- 7. ‘Tree’ in Irish (5)
- 9. Common yellow-flowering plant that is superfood for bumblebees (9)
- 10. Tree most commonly associated with fairies in Ireland (8)
- 12. D9 institution that monitors our weather and changing climate (3,7)
- 14. Seabirds most commonly found along West coast of Ireland but also recently returned to Co. Antrim’s isle of Muck after long absence (7)
- 15. Common cause of pitch closure frustrations, increasing in intensity due to climate change(8)