watershipdown

Ash is a rabbit from the Sandleford Warren, mentioned only once in the book. They escaped into the woods after the men sprayed poison gas into the warren. Ash escaped with Nose-in-the-air, Butterbur, and Pine Needles. It is unknown what happened to them afterwards.

Rabbits
Cross-media
Sandleford Warren
Bigwig • Blackberry • Bluebell • Captain Holly • Dandelion • Fiver • Hawkbit • Hazel • Hazel and Fiver's Mother • Pipkin • Pimpernel • Scabious • Silver • Threarah • Toadflax

Nuthanger Farm
Boxwood • Clover • Haystack • Laurel
Cowslip's Warren
Cowslip • Kingcup • Laburnum • Silverweed • Strawberry
Efrafa
Blackavar • Captain Campion • Captain Charlock • Captain Chervil • Captain Orchis • Captain Vervain • General Woundwort • Hyzenthlay • Ragwort • Sainfoin • Thethuthinnang • Thistle
Other/Folklore
Black Rabbit of Inlé • El-ahrairah • Hemlock • Hufsa • Laurel • Rabscuttle

Books/graphic novel only
Introduced in Watership Down
Acorn • Ash • Avens • Bartsia • Betony • Blackavar's Mother • Buckthorn • Butterbur • Captain Bugloss • Captain Loosestrife • Captain Mallow • Celandine • Coltsfoot • Fiorin • Flesca • Groundsel • Marjoram • Moneywort • Nelthilta • Nightshade • Nildro-hain • Nose-in-the-Air • Pine Needles • Scabious • Snowdrop • Speedwell • Thrayonlosa • Threar • Thunder • Vilthuril • Willow

Introduced in Tales from Watership Down
Anflellen • Burdock • Captain Betony • Captain Celandine • Chicory • Crowfoot • Crowla • Fescue • Flyairth • Foxglove • Frezail • Greenweed • Hallion • Heartsease • Henthred • Kingcup (folklore) • King Fur-Rocious • Knapweed • Lemista • Loosestrife • Melsa • Mian • Milmown • Nur-Rama • Nyreem • Peerton • Prake • Quiens • Rithla • Sandwort • Stitchwort • Stonecrop • Themmeron • Thrennion • Thyken • Tindra • Woodruff • Yarrow

Aspen • Bluesky • Buttercup • Captain Broom • Feldspar • Flax • Gentian • Gilia • Gorse • Granite • Heather • Hickory • Larch • Mallow • Marigold • Moss • Primrose • Raincloud • Red • Shale • Snowdrop • Spartina • Speaker of the Past • Unnamed brown Efrafan • Unnamed gray Efrafan
Film/Miniseries/Plays only
Cornflower (2016 radioplay) • Dewdrop (miniseries) • Marker rabbit (miniseries) • Nettle (miniseries) • Vinca (Hildreth stage play) • Violet (film)