late spring frost
Refers to frost that occurs later than usual in spring, potentially damaging crops.
This year the vegetables were damaged by a late spring frost.
Standard kanji spelling for 'late spring frost'.
Alternative kanji spelling; 晩 also means 'late'.
Compound of 遅 (late) + 霜 (frost). The reading おそじも is a straightforward combination of the kun'yomi readings.