How should I handle onions immediately after harvesting?

Written by
Liu Xiaohui
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Immediate post-harvest handling determines the success of your onion crop. I learned this the hard way, after I bruised bulbs during hurried transport. Keeping them gently handled ensures the protective skins remain intact, which helps prevent rot during the curing process. Never drop or stack onions in deep piles. Place them gently in a padded container, right in the garden.
Container Selection
- Use shallow breathable containers
- Canvas-lined baskets prevent bruising
- Avoid deep buckets that compress bulbs
Transport Technique
- Carry containers with two hands
- Never drag or toss containers
- Limit stacking to two layers maximum
Top Management
- Keep foliage intact during moving
- Tops protect bulbs from sunscald
- Prevent folding or breaking stems
Field to Curing Transition
- Move bulbs within 24 hours
- Avoid temperature fluctuations
- Keep out of direct sunlight
Avoid compression damage through smart stacking. Place bulbs in single layers, leaving room between each one. Use the tops as coverage over adjacent bulbs, serving as a natural cushion. I use spiral patterns to load mine and prevent contact points, which can create bruising.
Control temperature during transport. Never leave containers in hot vehicles or exposed to direct sunlight. Temperatures of 80°F or above are sufficient to start cooking onions. I utilize shaded garden carts and move at a cooler time of the morning to protect my harvest from damage due to heat.
Deal with the high-humidity challenges proactively. When dew or humidity threatens, put bulbs under fans as soon as possible. Circulate the air around the containers. I did this last August when humidity spikes occurred unexpectedly, and it saved my harvest in Georgia.
The key to amazing onions is handling them well with post-harvest methods. Firm, low-storing bulbs will repay your tender loving care. Those sweet homegrown flavors will be at their best as long as you transition from soil to storage seamlessly. Time spent in the kitchen cooking with onions handled well will be rewarding.
Read the full article: When to Harvest Onions: Complete Guide