Magnolia x wiesneri ‘Aashild Kalleberg’ – This is a beautiful hybrid between M. hypoleuca and M. sieboldii, the Oyama Magnolia. As with the Oyama Magnolia each emerging flower bud does look very much like a peeled boiled egg setting in an eggcup. The ivory broad vase flowers begin opening during June in USDA zone 5b; they are 6” to 8” across. The tepals are waxy and heavy-textured. Look inside a flower and find red to red-purple stamens and be sure to whiff the delicious fragrance. ‘Aashild Kalleberg’ has tended towards a large multi-stemmed plant. We have successfully pruned ours into a single-stemmed low-branched tree having cut out any stems which may sprout from the base of the lower trunk. Large paddle-shaped leaves may turn a respectable golden brown in fall. Ours is content sited in quite a lot of open shade with dappled sun. Northern gardeners: spring planting is advisable.
The Magnolias are one of the earliest known flowering plants to establish themselves on our beautiful planet. Much breeding continues and the cultivar list is expanding with some smaller sizes and new flower colors. Many are typical tree forms while some tend to be multi-stemmed – more like huge shrubs than single-stemmed trees. Most are spring blooming – some early, others later after danger of frost has passed in the north. A few of these will provide some recurrence of bloom during the summer. A handful bloom in summer. Many emit wonderful fragrance. The foliage is often large, bold and paddle-shaped, looking attractive in summer; a handful of species’ leaves are so large that they are reminiscent of banana foliage. Some seasons they develop gold to golden brown autumn color before the leaves drop. It’s hard for me to think of a landscape without one or more included in the mix. All prefer fertile deep loam with plenty of organic matter and moist soils – some are even content in relatively wet conditions. Magnolias should be sited in full to half sun exposures. All our selections are cutting grown, on their own wood – they are not grafted. Some are much easier to produce on their own wood than others; some are quite recalcitrant. In that, we may not always have certain plants available or available in great numbers. Spring planting is recommended for magnolias especially up north. Cutting grown.