»Hazel, .first week in March.

» Yew, .first two weeks in March.

» Elm, first three weeks in March.

» Alder and Willow, second and third week in March.

» Ash and Birch, second and third week in April.

» Poplar, last week in March.

» Oak, last week in April and first week in May.

» Pine, first and second week in May.

» Grass, last week in May till end of first week in July.

» Oil seed rape, first two weeks in May.

» Plane, last week in April and first week in May.

» Dock, mid-June into July.

» Nettle, last half of June and most of July.

» Lime, last half of June and . rst days of July.

» Plantain, first two weeks in June.

» Mugwort, second half of July and first half of August.

Low-allergen trees and plants include:

» Bleeding Heart or Lady in the Bath (Dicentra spectabilis); Broom (Genista lydia)
» Bugle (Ajuga reptans)
»Busy Lizzie (Impatiens walleriana)
» Mexican Orange Blossom (Choisya ternata)
» Columbine (Aquilegia vulgaris)
»Coral Bells (Heuchera sanguinea; Cotoneaster; Cranesbill (Geranium)
»Day Lily (Hemerocallis)
»Dead Nettle (Lamium)
»Begonia, . brous rooted
» Geum (Geum chiloense)
»Hebe » Lady's Mantle (Alchemilla mollis)
» Lobelia (Lobelia erinus)
»Love-in-a-Mist (Nigella damascena)
» Masterwort (Astrantia major)
» Penstemon hybrids
» Periwinkle (Vinca major)
» Hosta
» Poppies
» Prunus x cistena
» Sage (Salvia officinalis)
»Scabious
» Sea Holly (Eryngium x tripartitum)
» Siberian Iris
» Snapdragon (Antirrhinum majus)
» Strawberry Tree (Arbutus unedo)
» Thalictrum aquilegifolium
» Willow-Leaved Pear (Pyrus salicifolia)