Such an idea would allow druids to create their own sacred groves, if the craft for farming was created. Other crafts could be used in farming as well.
Woodworking-planks for fencing
Smithing-plows for grain
Oxen
Other than the druids; brownies, elves, halflings, and gnomes are all races that use farming to a fair extent. brownies that cultivate nectars of plants they grow in moss(vanilla orchids comes to mind), elves and their cities in the trees, halflings for the cultivation of berries and grain, gnomes for their tubers and roots(mmmm, turnips, rootbeer and fungi) Not sure about dwarves if they do any farming, I think they eat what they mine, might explain why they are so abrasive at times (attempt at a funny)
One also has to remember that for most fruit bearing bushes its about a year before they have any berries worth harvesting (cultivated)
For fruit bearing trees, its 3-5 years
For seed bearing trees, 10-15 years
Walnut trees take I think take the longest, before producing walnuts that are worth harvesting, almost 30 years.
Do think its an excellent craft to add