Onions are low plants with sparse root systems so keep weeds under control. Harvest when the tops fall over and dry up. Spread out the harvested bulbs in a dry area to cure for several days. Use injured bulbs, don't try to store them. The tops of slow maturing plants may be broken over but don't bruise the neck of the bulb in the process.
Hot onions are due to insufficient watering.
Flowering may occur if the sets were too large or stored improperly. Remove the seed stalk before it is 6 inches tall. This information is for educational purposes only. References to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. This information becomes public property upon publication and may be printed verbatim with credit to MSU Extension.