No blossoming | Pre-blossoming | Middle blossoming | Main blossoming |
| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Acacia, black | | | | | | | | | | | | | | Alder, common | | | | | | | | | | | | | | Alfalfa, lucerne | | | | | | | | | | | | | | Amaranth, coarse-haired | | | | | | | | | | | | | | Ash, common | | | | | | | | | | | | | | Barley | | | | | | | | | | | | | | Beech, common | | | | | | | | | | | | | | Bermuda grass | | | | | | | | | | | | | | Birch, weeping | | | | | | | | | | | | | | Blue grass, Kentucky | | | | | | | | | | | | | | Chestnut, sweet | | | | | | | | | | | | | | Cob, hazel | | | | | | | | | | | | | | Cocksfoot | | | | | | | | | | | | | | Common bent | | | | | | | | | | | | | | Couch grass | | | | | | | | | | | | | | Creeping bent | | | | | | | | | | | | | | Cypress, Italian | | | | | | | | | | | | | | Daisy, moon | | | | | | | | | | | | | | Dandelion | | | | | | | | | | | | | | Dock, curly, sorrel, garden, sheep’s | | | | | | | | | | | | | | Elder, common | | | | | | | | | | | | | | Elm, Scotch | | | | | | | | | | | | | | False oat grass | | | | | | | | | | | | | | Geranium, bedding | | | | | | | | | | | | | | Golden wattle, Sydney | | | | | | | | | | | | | | Goose-foot | | | | | | | | | | | | | | Hornbeam, common | | | | | | | | | | | | | | Hyacinth | | | | | | | | | | | | | | Johnson grass (Sudan grass) | | | | | | | | | | | | | | Lent lily | | | | | | | | | | | | | | Lilac, common | | | | | | | | | | | | | | Meadow fescue | | | | | | | | | | | | | | Meadow foxtail | | | | | | | | | | | | | | Nettle, stinging | | | | | | | | | | | | | | Oak, English | | | | | | | | | | | | | | Oats, common | | | | | | | | | | | | | | Olive | | | | | | | | | | | | | | Orach | | | | | | | | | | | | | | Parietaria | | | | | | | | | | | | | | Pellitory of the wall | | | | | | | | | | | | | | Pine, black, Scots and Eastern white | | | | | | | | | | | | | | Plane, oriental | | | | | | | | | | | | | | Plantain, English | | | | | | | | | | | | | | Poplar, white | | | | | | | | | | | | | | Primrose | | | | | | | | | | | | | | Privet, common | | | | | | | | | | | | | | Pussywillow | | | | | | | | | | | | | | Rape, oilseed | | | | | | | | | | | | | | Red Fescue | | | | | | | | | | | | | | Rose, Japanese | | | | | | | | | | | | | | Rye-grass | | | | | | | | | | | | | | Ryegrass, perennial | | | | | | | | | | | | | | Sabine | | | | | | | | | | | | | | Spruce, common | | | | | | | | | | | | | | Sweet mock orange | | | | | | | | | | | | | | Timothy | | | | | | | | | | | | | | Vernal grass, scented | | | | | | | | | | | | | | Wheat, common | | | | | | | | | | | | | | Wild rye | | | | | | | | | | | | | | Yorkshire fog | | | | | | | | | | | | |
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