Eucalyptus Gunni tree
By Spiker
United Kingdom 
I would like to know the maximum height a Eucalyptus gunni will grow
22 Sep, 2008
Answers
The RHS Gardener's Encyclopedia says 30 metres or 100 feet is the maximum height! I always thought 25 metres.
They can certainly grow very rapidly unless you cut them back. We had to remove one from our garden as it was uprooting the front wall.
23 Sep, 2008
According to the BBC gardening web site - its 1000 cm or 32.5 feet - but can grow taller unless you keep it pruned.
23 Sep, 2008