The tree calendar
When trees flower and fruit
Every tree in Treely on one chart, January to December: when its flowers or catkins are out, and when its fruit, nuts, cones or seeds are on the tree. The year runs left to right; the trees are in the order they first flower.
Flowers or catkinsFruit, nuts, cones or seeds
Hazel, birch and alder grow next spring’s catkins in autumn and carry them, still closed, through the winter, so their catkin months start early.
TreeJanFebMarAprMayJunJulAugSepOctNovDec
AlderJanuary: catkins and conesFebruary: catkins and conesMarch: catkins and conesApril: conesMay: conesJune: conesJuly: conesAugust: catkins and conesSeptember: catkins and conesOctober: catkins and conesNovember: catkins and conesDecember: catkins and cones
Downy birchJanuary: catkinsFebruary: catkinsMarch: catkinsApril: catkinsMay: catkinsJuly: seed catkinsAugust: seed catkinsSeptember: seed catkinsNovember: catkinsDecember: catkins
HazelJanuary: catkinsFebruary: catkinsMarch: catkinsApril: catkinsJune: nutsJuly: nutsAugust: nutsSeptember: catkins and nutsOctober: catkins and nutsNovember: catkinsDecember: catkins
Lawson cypressJanuary: flowersFebruary: flowersMarch: flowersApril: flowersJune: conesJuly: conesAugust: conesSeptember: conesOctober: conesDecember: flowers
Silver birchJanuary: catkinsFebruary: catkinsMarch: catkinsApril: catkinsMay: catkins and seed catkinsJune: seed catkinsJuly: seed catkinsAugust: seed catkinsSeptember: seed catkinsOctober: seed catkinsNovember: catkins and seed catkinsDecember: catkins
Western red cedarJanuary: flowers and conesFebruary: flowers and conesMarch: flowersApril: flowersJune: conesJuly: conesAugust: conesSeptember: conesOctober: conesNovember: conesDecember: flowers and cones
Cherry plumFebruary: flowersMarch: flowersApril: plumsMay: plumsJune: plumsJuly: plumsAugust: plumsSeptember: plums
Giant redwoodJanuary: conesFebruary: flowers and conesMarch: flowers and conesApril: flowers and conesMay: conesJune: conesJuly: conesAugust: conesSeptember: conesOctober: conesNovember: conesDecember: cones
Purple-leaved plumFebruary: flowersMarch: flowersApril: plumsMay: plumsJune: plumsJuly: plumsAugust: plumsSeptember: plums
YewFebruary: flowersMarch: flowersApril: flowersAugust: berriesSeptember: berriesOctober: berriesNovember: berries
BlackthornMarch: flowersApril: flowersJune: sloesJuly: sloesAugust: sloesSeptember: sloesOctober: sloesNovember: sloesDecember: sloes
Cherry laurelMarch: flowersApril: flowersMay: flowersJune: cherriesJuly: cherriesAugust: cherriesSeptember: cherries
Common ashJanuary: keysFebruary: keysMarch: flowers and keysApril: flowers and keysMay: keysJune: keysJuly: keysAugust: keysSeptember: keysOctober: keysNovember: keysDecember: keys
English oakMarch: catkinsApril: catkinsMay: catkinsJune: acornsJuly: acornsAugust: acornsSeptember: acornsOctober: acorns
European larchJanuary: conesFebruary: conesMarch: flowers and conesApril: flowers and conesMay: flowers and conesJune: conesJuly: conesAugust: conesSeptember: conesOctober: conesNovember: conesDecember: cones
HornbeamMarch: catkinsApril: catkinsMay: catkins and seedsJune: seedsJuly: seedsAugust: seedsSeptember: seedsOctober: seedsNovember: seeds
Japanese larchJanuary: conesFebruary: conesMarch: flowers and conesApril: flowers and conesMay: flowers and conesJune: conesJuly: conesAugust: conesSeptember: conesOctober: conesNovember: conesDecember: cones
JuniperJanuary: berriesFebruary: berriesMarch: flowers and berriesApril: flowers and berriesMay: flowers and berriesJune: flowers and berriesJuly: berriesAugust: berriesSeptember: berriesOctober: berriesNovember: berriesDecember: berries
Norway mapleMarch: flowersApril: flowers and keysMay: keysJune: keysJuly: keysAugust: keysSeptember: keysOctober: keys
Western hemlockMarch: flowersApril: flowersMay: flowersJune: conesJuly: conesAugust: conesSeptember: conesOctober: conesNovember: cones
Wild cherryMarch: flowersApril: flowers and cherriesMay: flowers and cherriesJune: cherriesJuly: cherries
AppleApril: flowersMay: flowersJune: applesJuly: applesAugust: applesSeptember: applesOctober: applesNovember: apples
Common beechApril: catkinsMay: catkins and beech mastJune: beech mastJuly: beech mastAugust: beech mastSeptember: beech mastOctober: beech mast
Common whitebeamApril: flowersMay: flowersJune: flowers and berriesJuly: berriesAugust: berriesSeptember: berriesOctober: berries
Copper beechApril: catkinsMay: catkins and beech mastJune: beech mastJuly: beech mastAugust: beech mastSeptember: beech mastOctober: beech mast
Crab appleApril: flowersMay: flowersJune: applesJuly: applesAugust: applesSeptember: applesOctober: applesNovember: applesDecember: apples
ElderApril: flowersMay: flowersJune: flowers and berriesJuly: flowers and berriesAugust: berriesSeptember: berriesOctober: berries
Field mapleApril: flowers and keysMay: flowers and keysJune: keysJuly: keysAugust: keysSeptember: keysOctober: keysNovember: keys
GinkgoApril: catkinsMay: catkinsJune: seedsJuly: seedsAugust: seedsSeptember: seedsOctober: seedsNovember: seeds
HawthornJanuary: hawsApril: flowersMay: flowersJune: flowersJuly: hawsAugust: hawsSeptember: hawsOctober: hawsNovember: hawsDecember: haws
HollyJanuary: berriesFebruary: berriesMarch: berriesApril: flowers and berriesMay: flowers and berriesJune: flowers and berriesJuly: berriesAugust: berriesSeptember: berriesOctober: berriesNovember: berriesDecember: berries
Horse chestnutApril: flowersMay: flowersJune: conkersJuly: conkersAugust: conkersSeptember: conkersOctober: conkers
Japanese mapleApril: flowersMay: flowers and keysJune: keysJuly: keysAugust: keysSeptember: keysOctober: keys
London planeJanuary: seed ballsFebruary: seed ballsMarch: seed ballsApril: flowers and seed ballsMay: flowers and seed ballsJune: seed ballsJuly: seed ballsAugust: seed ballsSeptember: seed ballsOctober: seed ballsNovember: seed ballsDecember: seed balls
Midland hawthornApril: flowersMay: flowersJune: flowersAugust: hawsSeptember: hawsOctober: hawsNovember: haws
Norway spruceJanuary: conesFebruary: conesMarch: conesApril: flowers and conesMay: flowers and conesJune: flowers and conesJuly: flowers and conesAugust: conesSeptember: conesOctober: conesNovember: conesDecember: cones
Red oakApril: catkinsMay: catkinsJune: acornsJuly: acornsAugust: acornsSeptember: acornsOctober: acorns
RowanJanuary: berriesApril: flowersMay: flowersJune: flowersJuly: berriesAugust: berriesSeptember: berriesOctober: berriesNovember: berriesDecember: berries
Scots pineJanuary: conesFebruary: conesMarch: conesApril: flowers and conesMay: flowers and conesJune: flowers and conesJuly: conesAugust: conesSeptember: conesOctober: conesNovember: conesDecember: cones
SycamoreApril: flowersMay: flowers and keysJune: flowers and keysJuly: keysAugust: keysSeptember: keysOctober: keysNovember: keys
Turkey oakApril: catkinsMay: catkinsJune: catkins and acornsJuly: acornsAugust: acornsSeptember: acornsOctober: acorns
WalnutApril: catkinsMay: catkins and walnutsJune: walnutsJuly: walnutsAugust: walnutsSeptember: walnutsOctober: walnuts
Bay willowMay: catkinsJune: catkins and seed fluffJuly: seed fluffAugust: seed fluffSeptember: seed fluffOctober: seed fluffNovember: seed fluffDecember: seed fluff
Corsican pineJanuary: conesFebruary: conesMarch: conesApril: conesMay: flowers and conesJune: flowers and conesJuly: conesAugust: conesSeptember: conesOctober: conesNovember: conesDecember: cones
Holm oakMay: catkinsJune: catkinsJuly: acornsAugust: acornsSeptember: acornsOctober: acornsNovember: acorns
Judas treeJanuary: podsFebruary: podsMay: flowersJune: podsJuly: podsAugust: podsSeptember: podsOctober: podsNovember: podsDecember: pods
Swedish whitebeamMay: flowersJune: flowers and berriesJuly: berriesAugust: berriesSeptember: berriesOctober: berries
Sweet chestnutMay: catkinsJune: catkinsJuly: catkins and chestnutsAugust: catkins and chestnutsSeptember: chestnutsOctober: chestnutsNovember: chestnuts
Tulip treeJanuary: seed conesFebruary: seed conesMay: flowersJune: flowersJuly: flowers and seed conesAugust: seed conesSeptember: seed conesOctober: seed conesNovember: seed conesDecember: seed cones
Indian bean treeJanuary: podsFebruary: podsMarch: podsJune: flowersJuly: flowers and podsAugust: flowers and podsSeptember: podsOctober: podsNovember: podsDecember: pods
Large-leaved limeJanuary: ribbed nutsFebruary: ribbed nutsJune: flowersJuly: flowers and ribbed nutsAugust: ribbed nutsSeptember: ribbed nutsOctober: ribbed nutsNovember: ribbed nutsDecember: ribbed nuts
Small-leaved limeJune: flowersJuly: flowers and nuts on strapsAugust: nuts on strapsSeptember: nuts on strapsOctober: nuts on strapsNovember: nuts on strapsDecember: nuts on straps
Tree of heavenJanuary: twisted keysFebruary: twisted keysMarch: twisted keysJune: flowersJuly: flowers and twisted keysAugust: twisted keysSeptember: twisted keysOctober: twisted keysNovember: twisted keysDecember: twisted keys
Common limeJuly: flowers and nuts on strapsAugust: nuts on strapsSeptember: nuts on strapsOctober: nuts on strapsNovember: nuts on straps
EucalyptusJanuary: capsulesFebruary: capsulesMarch: capsulesApril: capsulesMay: capsulesJune: capsulesJuly: flowers and capsulesAugust: flowers and capsulesSeptember: capsulesOctober: capsulesNovember: capsulesDecember: capsules
Atlas cedarJanuary: conesFebruary: conesMarch: conesApril: conesAugust: flowersSeptember: flowersOctober: flowers and conesNovember: flowers and conesDecember: cones
Cedar of LebanonJanuary: conesFebruary: conesMarch: conesApril: conesSeptember: flowersOctober: flowers and conesNovember: flowers and conesDecember: cones
Tree by tree
- Alder: catkins August to March; cones all year.
- Apple: flowers April to May; apples June to November.
- Aspen: catkins February to April; seed fluff May to June.
- Atlas cedar: flowers August to November; cones October to April.
- Bay willow: catkins May to June; seed fluff June to December.
- Black poplar: catkins March to April; fruit May to June.
- Blackthorn: flowers March to April; sloes June to December.
- Cedar of Lebanon: flowers September to November; cones October to April.
- Cherry laurel: flowers March to May; cherries June to September.
- Cherry plum: flowers February to March; plums April to September.
- Common ash: flowers March to April; keys all year.
- Common beech: catkins April to May; beech mast May to October.
- Common lime: flowers July; nuts on straps July to November.
- Common whitebeam: flowers April to June; berries June to October.
- Copper beech: catkins April to May; beech mast May to October.
- Corsican pine: flowers May to June; cones all year.
- Crab apple: flowers April to May; apples June to December.
- Dogwood: flowers May to June; berries July to September.
- Douglas fir: flowers March to May; cones September to November.
- Downy birch: catkins November to May; seed catkins July to September.
- Elder: flowers April to July; berries June to October.
- English oak: catkins March to May; acorns June to October.
- Eucalyptus: flowers July to August; capsules all year.
- European larch: flowers March to May; cones all year.
- Field elm: flowers February to March; seeds April to May.
- Field maple: flowers April to May; keys April to November.
- Giant redwood: flowers February to April; cones all year.
- Ginkgo: catkins April to May; seeds June to November.
- Grand fir: flowers April to May; cones September to October.
- Hawthorn: flowers April to June; haws July to January.
- Hazel: catkins September to April; nuts June to October.
- Holly: flowers April to June; berries all year.
- Holm oak: catkins May to June; acorns July to November.
- Honey locust: flowers June; pods September to November.
- Hornbeam: catkins March to May; seeds May to November.
- Horse chestnut: flowers April to May; conkers June to October.
- Indian bean tree: flowers June to August; pods July to March.
- Japanese larch: flowers March to May; cones all year.
- Japanese maple: flowers April to May; keys May to October.
- Judas tree: flowers May; pods June to February.
- Juniper: flowers March to June; berries all year.
- Large-leaved lime: flowers June to July; ribbed nuts July to February.
- Lawson cypress: flowers December to April; cones June to October.
- Lombardy poplar: catkins March to April.
- London plane: flowers April to May; seed balls all year.
- Magnolia: flowers March to August.
- Midland hawthorn: flowers April to June; haws August to November.
- Noble fir: flowers April to May; cones September to October.
- Norway maple: flowers March to April; keys April to October.
- Norway spruce: flowers April to July; cones all year.
- Ornamental cherry: flowers April to May; fruit June to August.
- Purple-leaved plum: flowers February to March; plums April to September.
- Red oak: catkins April to May; acorns June to October.
- Rowan: flowers April to June; berries July to January.
- Scots pine: flowers April to June; cones all year.
- Sessile oak: catkins May; acorns July to October.
- Silver birch: catkins November to May; seed catkins May to November.
- Sitka spruce: flowers May; cones June to October.
- Small-leaved lime: flowers June to July; nuts on straps July to December.
- Swedish whitebeam: flowers May to June; berries June to October.
- Sweet chestnut: catkins May to August; chestnuts July to November.
- Sycamore: flowers April to June; keys May to November.
- Tree of heaven: flowers June to July; twisted keys July to March.
- Tulip tree: flowers May to July; seed cones July to February.
- Turkey oak: catkins April to June; acorns June to October.
- Walnut: catkins April to May; walnuts May to October.
- Weeping willow: catkins March to April.
- Western hemlock: flowers March to May; cones June to November.
- Western red cedar: flowers December to April; cones June to February.
- White poplar: catkins February to March.
- White willow: catkins April to May; seed fluff June to August.
- Wild cherry: flowers March to May; cherries April to July.
- Wych elm: flowers February to March; seeds April to May.
- Yew: flowers February to April; berries August to November.
Months are for Britain and vary a few weeks with the year and how far north you are. Each one is checked against the field guides; see a tree’s own page for what to look for.
In the app
Know what to look for, every week
- What’s out, every weekThree things to find on the trees this week
- Every part, through the yearLeaves, bark, buds, flowers and fruit, photographed in every season
- A short round each dayUntil you know them on sight
Free to download.