Yuccaman,
I am not sure what zone 5 minimum temps are but e. debeuzevillei has been known to survive -23C. By the way this is my favourite euc. It has a nice white trunk and bluish leaves.

Our temps range from -23C to -26C and a rare -28C record was -35C but before there was a uncomfimed -39C in 1901.I really don't need to worry about because people grow zone 6 mimosa silk trees and zone 5 smoke trees. They never died since they were planted. Some peoples needles are fine to. Euc debeuzevillei should be worth a try perennial?

yuccaman, zone 5 for a euchy may be pushing it a little...

they are very tender and i think the constant cold zone 5-6-will kill it off.

however, it may be worth a try for an experiment if you start it in a pot.

about 2 years ago..i planted a small guuni in a pot...i garaged it and it is now a small tree about 8 feet tall..it is very bushy with several thick trunks and healthy..

i garaged it in november and the coldest it got was about -5C for a day or so.

i have a photo of one on my recent pics clay potted with a musa basjoo.

its still outside here in ajax..

palmettoman z6

Good info 🙂 I might try one some day.

No Eucalyptus are Top hardy in zone 5-6 and none are long- term top hardy in zone 7a ..... The Snow gum family grouping maybe some of the Cold hardiest of all.... but.... there is a trade off..... they Hate Summer heat and Humidity...... and each year of growing back from the roots or ground level sprouts will in time lead to less and less top growth till it finally gives up..... However there is good news at the end of the tunnel.... .... First of all you need to select Hardy Provenanced stock only.... to give you the extra few degrees in hardiness over the normal collections.... 2nd Pretty much stay away from the Snow gum's..... 3rd go with Frost hollow or Tableland types in Australia/Tasmania.... as they will do the best in Zone 5-7a There are at least 5 you can grow as a perennial in zone 5.... with of course the proper provenance selection and type..... Gunnii from Tasmania ranges in Collection.... to only hardy in zone 8b-9a in the lowland green-forms to 7b in the Highland or frost hollow forms in more sub-alpine tasmania which have a ... almost whitish-silver blue leaves which are very very small and thicker than the normal type.... this are possible to zone 5b for many years..... Archeri basically about the same.... some provenances are just slightly hardier...... With careful selection it's possible to get good regrowth of 5-10Ft or more in a single season on a few types... 4th.... Australia's Mtns are colder than Tasmania's Mtns...... 🙂

Eucalyptus neglecta should be able to survive. It should be as hardy as Musa Basjoo.

Neglecta is one for sure...... Bridgesiana is another..... and the list goes on...... You want something to resprout from the ground area that gives you at least a few feet or more in a single season...... Bridgesiana is much quicker that neglecta.... but neglecta has a more bushy shape ..... 😀

Thanks for the information about the Eucs.

I should grow some soon!