niels kreiberg standing next to 5 yr populus tremula × populus tremuloides in haapastensyrja

haapastensyrja - plastic house where cuttings are rooted

a photo of a production nursery - general view

haapastensyrja - view of beds after plastic house removed

rooted cuttings of pia in heated peat at haapastensyrja

detail of venting of the plastic house in haapastensyrja

pia sown may/70 in plastic house at haapastensyrja

pia was sown may 9/70 in peat which later will be lifted and
stored at -5 c in fall (sept./70). initially planted in a temporary plastic house in haapastensyrja.

pia was sown may 9/70 in peat which later will be lifted and stored at -5 c in fall (sept./70). initially stored at a temporary plastic house in haapastensyrja

haapastensyrja - clonal grafts of pia - note differences