Neglected. Untended. Abandoned. Nearly overgrown. That's what à l'abandon means. There are a couple of parcels out in the vineyard that have been neglected for years. I can say that with certainty now because I've been walking out there for years.
One of the neglected parcels of vines has been taken over by the spindly trees that they call acacia here. In the U.S., they're locust trees. Black locust, I believe. They produce big bunches of fragrant white flowers in spring. People dip the bunches of flowers in crêpe batter, fry them, and eat them.
You can see how green the ground is here, even in February. Of course, it has been rainy for months. One month from today, it will be spring. Vivement le printemps !
And the old vines are now covered in greenish-yellow lichens. I don't think they produce any grapes any more. Or if they do, the bunches are stunted and the grapes are tiny. They've reverted to their wild state, I guess.