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. Timber density 360kg/m3, equal to P. radiata. Cuttings 40cm, Rooted topped @ 1m.

P. maximowiczii from Hokkaido x fastigiate P. nigra from Turkey (not Lombardy).Narow crown, very light branching smooth barked, good disease & possum resistance. Tolerates near coastal sites. Least vigorous of maxi-nigra crosses. Ideal where a healthy smaller growing tree required. Wood density 360 kg/m3. Cuttings 40cm, Rooted topped @ 1m.

P. x euramericana. Straight stemmed, narrow crowned, deciduous. Vigorous growth and tolerates dry hillsides and exposure Good conservation tree where minimal shade required. Prone to rust in high humidity & heavy dews, Yellow autumn display. Cuttings 40cm, Rooted topped @ 1m.

Broadly columnar, deciduous. Rapid growth, pale trunk. Root suckers form a clump around the original tree if not grazed off. Used to stabilise slip sites. Yellow & orange autumn colours. Origin: Appleton, Wisconsin, USA . Rooted topped @ 1m.