The matter of a few families earning Silver last winter is no secret, especially since their children often boast in front of others about eating fresh vegetables. The important thing is that relieving themselves is no longer uncomfortable, and the kids at home haven't stopped clamoring for their parents to plant some.
The reason for not planting last year was that it was close to the end of the year, and time was certainly too late. In less than a month, the fields would be ready for sowing. Additionally, it required too much charcoal, a fact these families didn't hide at all. Thinking it through, it just didn't seem worthwhile, so it was abandoned.
But now there's enough time, and it's the village chief himself who suggested it. It would be foolish not to plant.
Moreover, compared to the Silver earned, the cost of charcoal is almost negligible. In fact, they've already done the math in their hearts and know they can earn much more Silver.