It is important to know how to properly winterize your daffodil bulbs in order to be able to look forward to a new Daffodil crop when warmer temperatures return. Winterizing Daffodil bulbs must be done before the ground freezes or it will be next to impossible to dig up the frozen winter soil to get to the bulbs. Additionally, exposure to frost and extreme cold can kill the dormant bulb. Use these tips from expert horticulturists to effectively winterize your Daffodil bulbs.
For safety of future growth, wait until the foliage on a blooming Daffodil plant shows visible signs of decline. Yellowing leaves and dead flower heads are a sure sign that the Daffodil bulb is spent for that growing season and can be safely dug up for winter storage.
Once it is clear that Daffodil bulbs are ready for winterizing, carefully dig up each bulb. This can best be accomplished by measuring a perimeter of a few inches around each bulb so that you avoid inadvertently bruising or piercing them with digging implements as you unearth them.
Next, examine each bulb for signs of disease, decay, or rot. Winterize only those bulbs that are clearly still vital and in good health.
Clean each Daffodil bulb by gently brushing off clinging dirt and rinsing them in clear warm water. Lay out the bulbs to dry for one to two days in a cool, dry location.
Next, locate a box and fill it with dried peat moss or sand. Install the bulbs to be winterized in this box. Do not cover the box to allow for air circulation. Place in a cool, dry location.