Eucalyptus is preserved using glycerin, so there are no harsh chemicals and only the natural eucalyptus oil scents it. It won't retain the full scent forever, but usually is quite fragrant for several weeks up to a few months, and then is less scented as it sits.

How long does dried eucalyptus smell?

Eucalyptus can last up to three weeks with fresh water changes and after three weeks, you can remove the Eucalyptus from water and let is air dry. Once the Eucalyptus is air dried, Eucalyptus can last forever and its scent will last for years.

How long does eucalyptus last dry?

Dried eucalyptus stems last for years, although the leaves will become brittle and break if you don't handle the stems gently. The stems will dry on their own in an arrangement with other dried foliage and flowers.