These are generally the nights that lead to frozen
citrus, damaged plant nurseries and
trees farms, strawberry farmers getting wiped out, etc..
Sheep and dairy
farming further north than practical today (Nuuk area Greenland) Treelines higher than at present (Scandinavia) Deciduous forests (oak, hornbeam) further north than at present (Sweden, Finland) Grape cultivation further north than practical today (Yorkshire, perhaps southern Norway) Farmsteads at higher altitudes than practical today (Britain) or even overrun by glaciers since (Norway)
Citrus trees and other subtropical crops cultivated further north than possible today (China) Driftwood deposited on beaches currently blocked by permanent shelf - ice (Ellesmere land)