I'm making a very simple, basic farming mod for 0.31. It should be ready to post this afternoon.
To start with, I've made dwarves outdoor farmers as well so that they can select outdoor seeds on embark. This is just because indoor farming is broken; I don't intend to leave it this way once the bug is fixed.
Next, also as a bug fix, I've made quarry bushes millable instead of leaves. They produce quarry cinnamon, which is more or less the same as leaves were. THis will be reverted too.
I've seasonalised outdoor plants: muck root is winter/spring, bloated tubers autumn/winter, prickleberries spr/sum/aut, strawberries spr/sum, longland grass sum/aut, rat weed year round, fisherberries spring only, rope reed spr/sum/aut, all three dye plants year round, sunberries summer only, whip vine summer/autumn.
Prickle berries can be made into jelly, strawberries into jam, and fisher berries into berry sugar. Hide root dye is the same value as other dyes because there's no way to specify which dye is used so it becomes a headache rather than a gameplay benefit.
I've also added a new plant called the Minaret-Cap. It's farmable, should not appear in shrubs (no guarantees), only comes in clusters of 1, and cannot be processed at any farming buildings. It instead must be taken to a new custom building, the sawmill, where it is converted into minaret-cap logs. Sawmills require saw blades, mechanisms, and blocks to build, and use the woodcutting labour. This whole resource tree is not yet debugged: I intend to make minaret-caps year round but have an extremely long growth time, still shorter than normal trees. Suggestions welcome as this is my first attempt at making a custom plant in this version.
I also intend, eventually, to allow the sawmill to do some other fun stuff, and to produce sawdust powder as a side reaction to everything it does. If anyone can figure out how to make it a powered building, I'd love to hear it.
Suggestions in general would be great. I wouldn't object to adding a few more plants, particularly dyes and perhaps some more farmable wood plants with different colours of wood to use at the sawmill. I don't want to get crazy with the food plants, as there is already plenty of food.
Cheers!