I don't have a stockpile of some of the saplings yet, leading to my problem. Anyone got a few good ideas as to what I can put in there that produces fairly well? So far I've got seeds (wheat, pumpkin, melon) and saplings (oak and jungle) and I'm getting more than I use. Other trees seem to be restricted, though, even MFR's own rubber trees. I'm running the DW20 1.5.2 pack, multiplayer.
Well, those harvesters are going to be producing quite a surplus of them, in general, assuming you've got it set up properly.
Personally, I like to build multiple small farms. A planter just putting out a single oak, jungle, spruce, or birch sapling in the dead center. That's four farms which are 3 x 3, however at this point, you can much more easily set up a routing system, because they are single-item dependent.
Basically, you take your output pipe from the harvester, and loop it down under the farm to your planter. There, you have an Insertion Pipe. So if there's anything running through the pipe which can go in the planter (like saplings), then it will. Otherwise, it will continue on to the ME Interface that will take all input and put it into storage. If the planter is full, surplus saplings also go into the ME Interface. If the farm is remotely located, use an Item Tesseract instead to transport output to ME Interface.
It requires zero input from your ME Network whatsoever, because it is running on a single resource system. This is what I do for my trees.
For my 'passive' farm, I don't even HAVE a Planter. I've got three melon vines, and three pumpkin vines bracketing the harvestable 3 x 3, so that the gourds end up on the outer lines. The middle line is full of cotton. Output is hooked up directly to ME Interface, possible via Item Tesseract.
For my more active farm, I have Carrots, Potatoes, and Wheat. Meaning I have three stacks of Carrots, three stacks of Potatoes, and three stacks of Wheat in my planter. Each one planted in its own little line. Then it connects to ME Interface, possibly via Item Tesseract.
In all of these cases, the Planter is directly fed from the Harvester, with the surplus going to the ME Network, not the other way around. It's all self-contained locally.