>>1384421German here, also planted myself a small tree earlier this year. I'm in zone 8a near the Rhine, so most winters absolute coldest is around -5 to -10C, but some freak years like 2012 it can go down to -16.
Variety is "Frantoio" apparently from Tuscany
Still quite small and hasn't flowered yet this year, maybe too small to make it over winter even if it stays relatively mild? Planted in a somewhat protected corner between a raised bed and south facing wall for some heat retention, but I could still dig it out if forecasts are extreme
Once it fruits I guess I'll only be able to preserve them in salt water, not gonna spend several 10k(?) on an industrial press to make oil