With a strong botanical interest Frank developed his own floral print already in his youth. Favourites like lawn daises, tulips, roses, bindweed, forget-me-nots, violets, lily of the valley, crocuses and grape hyacinths were blended with pure fantasy flowers, frequently illustrated with a light touch.
With his prints, which were often based on the colours and forms of nature, in almost imperceptible repetition, Frank wanted the observer to feel freedom and a change of pace even in confined rooms:
“The monochromatic surface appears uneasy, while prints are calming, and the observer is unwillingly influenced by an underlying slow approach. The richness of decoration cannot be fathomed so quickly, in contrast to the monochromatic surface which doesn’t invite any further interest and therefore one is immediately finished with it.”