Purdue's 4-H website recommends blanching, but other methods of freezing herbs work fine.
If you feel you may need to store the herbs for several months, blanching may help them retain color and flavor over a longer period of time.
Freshly picked beans can be frozen very successfully after briefly blanching them.
Blanching means immersing the vegetables quickly in boiling water, then immersing them in ice cold water.
This is called blanching and it partially cooks the asparagus without removing all of the valuable vitamins and nutrients.
