P. deltoides x nigra 'Italica'. Broadly columnar, deciduous. Vigorous, popular in colder areas, quickly develops rough bark to deter cattle. Crown narrower on drier hill sites, used with Veronese in eastern regions. Cuttings 40cm, Rooted topped @ 1m.

Commercial release of a new hybrid 'Chiba' P. maximowiczii x fastigiate P. nigra (backcross). Developed by Allan Wilkinson, it has a narrow fastigiate form to replace the rust infected Lombardy poplar. 'Chiba' refers to Dr. Shigeru Chiba of the Japanese Oji Pulp & Paper Company which supplied the P. maximowiczii parent that is unpalatable to rabbits and possums. Leaves develop yellow autumn colour in May and remain rust free. Cuttings 40cm, Rooted topped @ 1m.

P. deltoides x yunnanensis. Broadly columnar, deciduous. Very vigorous. Not suitable for exposed sites due to large leaf size. Better in gullies & valley floors. Later yellow autumn colouring than other hybrid poplars. not very frost hardy. Widely used in western and northern regions, possum resistant. Timber density 360kg/m3, equal to P. radiata. Cuttings 40cm, Rooted topped @ 1m.

P.deltoides x nigra. Upright crown and heavier stem for timber production. Smooth bark as a young tree, does well in wet sheltered valleys and on dry windy hillsides,. Rust resistant. Recommended for East of the North Island. Cuttings 40cm, Rooted topped @ 1m.