Caterpillar food plant

Whitebeam (Sorbus aria). Getty Images

Sorbus aria

Rosebay willowherb, Epilobium angustifolium 'Album'

Chamaenerion angustifolium ‘Album’

Tilia cordata 'Green Globe'

Tilia cordata ‘Green Globe’

Verbascum 'Helen Johnson'

Verbascum ‘Helen Johnson’

How to grow verbascums - Verbascum 'Kynaston'

Verbascum ‘Kynaston’

Verbascum 'Pink Kisses'

Verbascum ‘Pink Kisses’

Polygonatum x hybridum 'Striatum'

Polygonatum x hybridum ‘Striatum’

Epilobium angustifolium 'Stahl Rose'

Chamaenerion angustifolium ‘Stahl Rose’

Melittis melissophyllum subsp albida

Melittis melissophyllum subsp. albida

Nepeta grandiflora 'Dawn To Dusk'

Nepeta grandiflora ‘Dawn To Dusk’

Nepeta 'Weinheim Big Blue'

Nepeta ‘Weinheim Big Blue’

Nepeta longipes

Nepeta longipes

Nepeta racemosa 'Walker's Low'

Nepeta racemosa ‘Walker’s Low’

Nepeta subsessilis 'Blue Dreams'

Nepeta subsessilis ‘Blue Dreams’

Small-leaved lime, Tilia cordata

Tilia cordata