Olive oil grove/harvester/prodcuer tour and tasting Florence/Siena/Rome NO CAR

HI everyone. Interested in visiting as nearby grove to learn about and see olive production and pressing followed by a guided tasting. Depending on the weather, the harvest might be finished before we arrive. NO CAR. Prefer to stay close to Florence/Siena/Rome. We're traveling from Siena to Florence by bus and again by bus to Rome.