Gustavo Iglesias Trabado
Fig. 1: Pollarded & pruned ornamental Eucalyptus 65 weeks after planting
Some 40 frost events later, including a steep air temperature drop from 12ºC (53ºF) to -8.5ºC (17ºF) in just 18 hours (Fig. 3), the overall status of this plant is good. Not surprising if we consider it is one of the cold hardiest Eucalyptus and it can be grown safely in the climatic conditions of my garden, unlike others. However, the newest and most fragile growth was lightly battered by frost and chilly winds and showed a mild degree of frost damage after the worst of winter (Fig. 4, left).
And now, spring has just arrived here. Some extra clipping operations are to be performed on the latest growth of these lateral branches to encourage a thicker foliage. And after that is done, a new growth season starts.
This pollarded and repeatedly pruned "big bonsai" Eucalyptus gunnii is being tamed to try to fit it in small garden designs via regular size control. If no operation was performed to regulate early growth during the first 100 weeks, current tree height would be in the range of 6 to 8 meters, basal branches bearing juvenile foliage would have already been lost and tree stability in high wind events might be compromised.
Also in this site
Pruning ornamental eucalypts: Sculpting Eucalyptus gunnii
Ornamental Eucalyptus: from seed to sculpted "Big Bonsai" container plants
Ornamental Eucalyptus as dieback perennials: taking advantage of plant resurrection
Grow Eucalyptus from seed: it is in the details
Contact GIT Forestry Consulting - Eucalyptologics