Maturity indices We harvest our asparagus when they reach a 9 inch length and pack them in different sizes in a pyramid box with a soaked pad on the bottom to maintain humidity, this boxes will be hydrocooled and storage in our cooler until they are load and shipped. Quality Fresh asparagus will be dark green and firm with tightly closed, compact tips. Stalks are straight, tender and glossy in appearance. Temperature (0 - 2C (32-35.6F) Storage life is typically 14-21 days at 2 C and can be extended up to 31 days by 7-10 days storage at 0C and atmospheric modification. Extended storage (~ 10-12 days) in air at 0 C may cause chilling injury.