Arum italicum ssp. italicum ‘Marmoratum’
Tuberous perennial with broad arrow-shaped, white-green marbled leaves. In early summer, bears greenish white spathes, followed by orange-red berries.
Arum maculatum
Tuberous perennial with glossy arrow-shaped, dark-green, often dark spotted. Flower spathes whitish green, reddish speckled in May. Fruits coral red late summer.
Aruncus aethusifolius
Perennial with deeply cut mid-green leaves. Attractive loose panicles of creamy white flowers.
Aruncus dioicus
Perennial with fern-like mid-green leaves. Attractive loose, pyramidal, panicles of creamy white flowers.
Aruncus dioicus ‘Glasnevin’
Perennial with fern-like mid-green leaves. Attractive erect panicles of creamy white flowers.
Aruncus dioicus ‘Kneiffii’
Perennial with very finely divided, fern-like leaves. Nodding creamy white flowers on arching stems.
Asarum caudatum
Semi-evergreen with heart-shaped green leaves. Pitcher-shaped, red-brown, flowers.
Asarum europaeum
Semi-evergreen with kidney-shaped dark green leaves Bell-shaped, greenish purple then brown flowers.
Asclepias incarnata
Thick-stemmed perennial with dense branches of mid-green leaves. Clustered umbels of pinkish purple flowers.
Asclepias tuberosa
Tuberous perennial with stout stems of spirally arranged, lance-shaped mid-green leaves. Clusters of orange-red flowers, followed by fruit.
Asperula gussonii
Densely tufted, evergreen mat of linear, green leaves. Many clusters of tubular, deep pink flowers.
Asperula sintenisii
Cushion forming evergreen linear, blue-green leaves, tubular pink flowers.