Because growing vegetables belongs to breaking ground, it does not affect.
Yang Gong's taboo days, also known as the "Thirteen Taboos for Yang Gong", were formulated by Yang Junsong, a geomantic master in the Tang Dynasty. They are the 13th of the first month, 11th of February, 9th of March, 7th of April, 5th of May, 3rd of June, 1st of July, 29th of July, 27th of August, 25th of September, 23rd of October, 21st of November and 19th of December.
In the eyes of Xuankong's family, these thirteen days can never be chosen as opening, construction, marriage, signing contracts, etc.