John inherited a taste for botanical drawing, and in 1841 produced his first work—the plates for his father's Illustrated Catalogue of British Plants.
His only independent work was An Illustrated Key to the Natural Orders of British Wild Flowers, published in 1865.
He died on 28 January 1870 in London at Lavender Hill, Clapham.
He married on 10 February 1853 Elizabeth, youngest daughter of Roger and Ann Dewhurst of Preston, Lancashire.
She survived him, and, in recognition of the scientific value of his work, was granted a civil list pension.