Mustard as a “cover plant” in Napa?

Image by Chiot’s Run
I planted Crimson Clover in a new garden area and it’s blooming now, how beautiful it is!

www.ChiotsRun.com

Question by seaportma: Mustard as a “cover plant” in Napa?
I have friends in Napa, Ca that I visit frequently. They joke that the purpose of the “Napa Valley Mustard Festival” is to keep the tourist coming during the off-season.

I know what a “cover plant” is. But:

“What specific benefits do the mustard plants provide to the vineyards or grape vines (vs. any other plant choice)?”

Thanks in advance.

Def “cover plant”: Cover crops are grown to protect and improve the soil, not to harvest. Cover crops have the potential to improve soil tilth, control erosion and weeds, and maintain soil organic matter. They can reduce compaction and increase water infiltration, which decreases leaching of nutrients.

Feel free to answer in the comment section below