Eucalyptus perriniana (Eucalyptus perriniana)

Here is the amazing thing about Eucalpts in zone 7. Even huge trees will freeze to the ground–and grow back almost to the original size immediately. Check it out: http://www.angelfire.com/bc/eucalyptus/perriniana.html

Eucalyptus parvula (Eucalyptus parvula)

For good info on Eucalyptus parvula, go to http://www.anbg.gov.au/gnp/gnp12/eucalyptus-parvula.html; this one grows fine in my zone 7 climate.

Eucalyptus nicholi (Eucalyptus nicholi)

Willow leafed gum. Zone 7.

Eucalyptus dalrympleana (Eucalyptus dalrympleana)

The word on the street is that dalrympleana is the largest of the hardy eucalypts. For more go to: http://www.arthurleej.com/p-o-m-July06.html

Eucalyptus cinerea (Eucalyptus cinerea)

Another favorite in dried arrangements; for more: http://www.backyardgardener.com/plantname/pda_85c0.html

Cider gum (Eucalyptus gunnii)

Eucalyptus gunnii is the euc most found in dried arrangements with the round leaves encircling the stem. zone 7