Geranium x cantabrigiense ‘St Ola”

(Geranium dalmaticum ‘Album’ x Geranium macrorrhizum ‘Album’). Large white flowers with broad, overlapping petals on a low, evergreen carpet. Flws: Apr-May. Ideal for groundcover among deciduous shrubs or edging borders. Well drained soil in sun or part shade. Ht 20cm.