Fruits for seed reach maturity 80–85 days after flowering, when the fruit stalk dries and the ashy coat on the fruit is prominent; reject undersized fruits. Mature fruits can be stored on a sand bed at room temperature.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Ash gourd – Harvest; fruit storage, p. 95
