Eucalyptus

Growing from seed for the first time. When would you put seedlings out to start hardening off? Don’t know why but growing eucalyptus seems really alien to me. I know they do well here . There’s some massive ones in one of the gardens I visit.

I would harden off as normal.... i have had mine in the GH and some of the tops have died off due to the heat/sun... so I would move out with maybe a fleece to start.