Choose bulbs that are clean and firm with no brown spots. The green foliage, called the frond, should also be a vibrant green colour.
Fennel can be stored in your refrigerator for up to 5 days when wrapped tightly in a plastic bag.
To Freeze Fennel, clean and prepare the bulb following the instructions below. Then cut it into small pieces and blanch in boiling water for 3-4 minutes. Drain thoroughly, then place in a freezer safe plastic bag before freezing.
Fennel has a high water content, so freezing the bulb can drastically alter the texture. If you are planning on using the fennel in a soft preparation, like soup, this should not be an issue. However, you will not be able to use the bulb raw after thawing.
Fennel stalks and fronds freeze very well compared to the bulb. Simply wash and chop the stalks and fronds and place in a freezer safe plastic bag.