Agrostemma githago
Corncockle
Ajuga chamaepitys
Ground-pine
Ajuga reptans
Bugle
Alcea rosea
Hollyhock
Alchemilla alpina
Alpine Lady's-mantle
Alchemilla filicaulis
Hairy Lady's-mantle
Alchemilla glabra
Smooth Lady's-mantle
Alchemilla mollis
Garden Lady's-mantle
Alchemilla sp.
Lady's Mantle (cultivated)
Alchemilla xanthochlora
Intermediate Lady's-mantle
Alliaria petiolata
Garlic Mustard
Alnus cordata
Italian Alder
Alnus glutinosa
Alder
Althaea officinalis
Marsh-mallow
Alyogyne huegelii
Blue Hibiscus
Amaranthus hybridus
Green Amaranth
Amaranthus retroflexus
Common Amaranth
Ambrosia artemisiifolia
Ragweed
Amelanchier lamarckii
Juneberry
Ammi majus
Bullwort
Amsinckia micrantha
Common Fiddleneck
Anaphalis margaritacea
Pearly Everlasting
Anchusa azurea
Garden Anchusa
Andromeda polifolia
Bog-rosemary