Acanthus mollis

Acanthus spinosus

Achillea 'Anthea'

Achillea filipendula 'Coronation Gold'

Achillea filipendula 'Moonshine'

Achillea millefolium 'Royal Tapestry'

Achillea millefolium 'Terra Cotta'

Achillea millifolium 'Paprika'

Achillea millifolium 'Red Beauty'

Aconitum  'Eleanor'

Aconitum cammarum 'Sparks'

Aconitum 'Carneum'

Aconitum 'Cloudy'

Aconitum 'Eleonor'

Aconitum fischeri

Aconitum napellus

Aconitum 'Pink Sensation'

Actaea pachypoda

Actaea racemosa

Actaea rubra

Ajuga 'Metallica Crispa'

Ajuga 'Pink Elf'

Ajuga 'Purple Brocade'

Ajuga r. 'Pink Surprise'

Ajuga reptans

Ajuga reptans 'Burgundy Glow'

Alcea ficifolia

Alcea rosea 'Nigra'

Alcea rosea 'The Watchman'

Alchemilla mollis (Auslese)

Alchemilla mollis 'Thriller'

Allium schoenoprasum

Allium senescens 'Glaucum'

Amsonia hubrichtii

Amsonia tabernaemontana

Amsonia tabernaemontana 'Blue Ice'

Anemone canadensis

Anemone hup. 'September Charm'

Anemone hupehensis 'Prinz Heinrich'

Anemone 'Splendens'

Anemone sylvestris

Anemone tomentosa 'Robustissima'

Anemone x 'Whirlwind'

Anemonella thalictroides

Angelica gigas

Aquilegia

Aquilegia vulgaris (dp R.V.)

Aquilegia vulgaris 'Nin's Blue'

Aralia racemosa

Arenaria montana

Arisaema triphyllum

Armeria 'Nifty Thrifty'

Artemesia 'Silver Brocade'

Artemisia abrotanum

Artemisia arborescens 'Powis Castle'

Artemisia schmidtiana 'Silver Mound'

Aruncus aethusifolius

Aruncus dioicus

Asarum canadense

Asarum europaeum

Asclepias  incarnata

Asclepias  incarnata 'Cinderella'

Aster divaricatus

Aster dumosus 'Snow Cushion'

Aster dumosus 'Wood's Light Blue'

Aster dumosus 'Wood's Pink'

Aster laevis 'Blue Bird'

Aster macrophyllus

Aster novae-angliae

Aster novae-angliae 'Alma Potschke'

Aster novae-angliae 'Harrington's Pink'

Aster novae-angliae 'Purple Dome'

Aster novae-angliae 'September Ruby'

Astilbe 'Bridal Veil'

Astilbe chin. 'Visions in Red'

Astilbe chinensis 'Vision in Pink'

Astilbe 'Deutschland'

Astilbe 'Erica'

Astilbe 'Fanal'

Astilbe 'Ostrich Plume'

Astilbe 'Snowdrift'

Astilbe 'White Gloria'

Astilbe 'White Wings'

Astrantia carniolica 'Rubra'

Astrantia major 'Claret'

Astrantia major 'Ruby'