Gertrude Jekyll was trained as an artist – presumably a fine artist – at the National School of Art in South Kensington – what became the Royal College of Art.  She could obviously turn her hand to anything, including tiles:-

Ornament set into the door into her workroom:-

And a floor in a shed in the garden:-

The upstairs long gallery is lined with cupboards which were full of her collection of textiles, many of which she gave to the V&A including a moth-eaten, Italian peasant cap.