When do many true Arctic Spitz breeds typically experience their most intense shedding events?

Answer

One or two massive, intense shedding periods annually when they 'blow' their undercoat

Unlike breeds that shed steadily, many true Arctic Spitzes experience one or two massive, intense shedding periods annually where they shed their entire undercoat, requiring specialized brushing tools like undercoat rakes.

When do many true Arctic Spitz breeds typically experience their most intense shedding events?
Dogbreedspitz