"Timothy hay" redirects here. For the author who used Timothy Hay as a pen name, see 
Margaret Wise Brown.
| Timothy | 
|  | 
| Habitus, ssp. pratense | 
|
| Scientific classification | 
| Kingdom: | Plantae | 
 
| Clade: | Tracheophytes | 
 
| Clade: | Angiosperms | 
 
| Clade: | Monocots | 
 
| Clade: | Commelinids | 
 
| Order: | Poales | 
 
| Family: | Poaceae | 
 
| Subfamily: | Pooideae | 
 
| Genus: | Phleum | 
| Species: | P. pratense | 
| Binomial name | 
| Phleum pratense 
 | 
|
| Synonyms | 
| 
Achnodonton bulbosum  (Gouan) J.Woods
Phleum alpinum subsp. trabutii  Litard. & Maire
Phleum bertolonii subsp. trabutii  (Litard. & Maire) Kerguélen
Phleum brachystachyum  (Salis) Gamisans, A.T.Romero & C.Morales
Phleum bulbosum  Gouan
Phleum deckeri  Roem. ex Trin.
Phleum fallax  Janka
Phleum maximum  Pryor
Phleum microstachyum  Ruiz ex Nyman
Phleum nodosum  L.
Phleum parnassicum  Boiss. & Heldr. ex Nyman
Phleum pratense subsp. brachystachyum  (Salis) Gamisans
Phleum pratense f. elongatum  (Schur) Serb. & Nyár.
Phleum pratense f. fallax  (Janka) Serb. & Nyár.
Phleum pratense subsp. microstachyum  (Ruiz ex Nyman) Malag.
Phleum pratense subsp. nodosum  (L.) Dumort.
Phleum pratense subsp. roshevitzii  (Pavlov) Tzvelev
Phleum pratense var. stoloniferum  (Host) Rchb.
Phleum pratense subsp. trabutii  (Litard. & Maire) Kerguélen
Phleum pratense subsp. vulgare  Asch. & Graebn.
Phleum roshevitzii  Pavlov
Phleum stoloniferum  Host
Phleum trabutii  (Litard. & Maire) Rivas Mart., A.Asensi, Molero Mesa & F.Valle
Phleum tuberosum  Panz. ex Trin.
Phleum villosum  Opiz
Phleum vulgare  Chase & Niles
Plantinia pratensis  (L.) Bubani
Stelephuros pratensis  (L.) Lunell
 | 
Timothy (Phleum pratense) is an abundant perennial grass native to most of Europe except for the Mediterranean region. It is also known as timothy-grass,  meadow cat's-tail or common cat's tail. It is a member of the genus Phleum, consisting of about 15 species of annual and perennial grasses.
It is probably named after Timothy Hanson, an American farmer and agriculturalist said to have introduced it from New England to the southern states in the early 18th century. Upon his recommendation it became a major source of hay and cattle fodder to British farmers in the mid-18th century.
Timothy can be confused with meadow foxtail (Alopecurus pratensis) or purple-stem cat's-tail (Phleum phleoides).