Hesperis matronalis
Dame's-violet
Hirschfeldia incana
Hoary Mustard
Hordeum murinum
Wall Barley
Hyacinthoides hispanica
Spanish Bluebell
Inula helenium
Elecampane
Laburnum anagyroides
Laburnum
Laburnum x watereri
Hybrid Laburnum
Lactuca serriola
Prickly Lettuce
Lamium album
White Dead-nettle
Lamium maculatum
Spotted Dead-nettle
Lamium purpureum
Red Dead-nettle
Lapsana communis
Nipplewort
Larix decidua
European Larch
Larix kaempferi
Japanese Larch
Larix x marschlinsii
Hybrid Larch
Laurus nobilis
Bay
Lepidium didymum
Lesser Swine-cress
Lepidium ruderale
Narrow-leaved Pepperwort
Leycesteria formosa
Himalayan Honeysuckle
Ligustrum ovalifolium
Garden Privet
Lilium martagon
Martagon Lily
Linaria purpurea
Purple Toadflax
Linum usitatissimum
Flax
Lupinus polyphyllus
Garden Lupin