[2] The spectacular success of 'Jackmanii' encouraged Jackman & Sons to introduce a series of clematis hybrids, although none of these ousted 'Jackmanii' from favour.

Jackman also produced a monograph, The Clematis as a Garden Flower (with T. Moore, 1872),[1] which he dedicated to H.S.H.

[2] Few of Jackman's early hybrids survive today, in part because they were grafted, often on 'Jackmanii',[2] but the dependable, floriferous and hardy 'Jackmanii' itself remains one of the most popular clematises of North American farmyard gardens in the East and the Midwest, where it is hardy to USDA Zone 4a;[3] it is seen grown on trellis, fence, arbor, porch pillar, or lamppost, wherever the soil retains some moisture and the roots are shaded,[4] even if only by a large flat rock.

[6] However, because 'Jackmanii' was bred from C. lanuginosa (a species which is susceptible to the pathogen which causes the disease), and because 'Jackmanii' led to a series of similar hybrids and the popularisation of the genus, clematis wilt soon became a serious problem for the new Clematis nurseries, to such an extent that by 1880 it had "brought the industry to a halt".

[6] Clematis wilt is still prevalent today, although many species and cultivars grown in gardens are resistant to it.