H'lo, there!
Sure do. The "No seeds" message is a deceptive, overly-complicated way of saying, "THERE'S NO MUD HERE!" Really, what it says is there are no seeds that exist that can be planted on anything
but mud; in the new version all farming requires irrigation. This is fairly simple. I posted this in another thread just minutes ago, but I'll gladly replicate it here:
Here's a visual of the standard farming process.
You'll want a river or a brook that occupies two z-levels (really one, but it shows up on two): the surface, and a level underground--they all do.
Dig out your farm on the underground level of the river, only a few tiles away from it before digging out a small tunnel toward it (without breaking through and having it flood all over).
Seal your farm room with a door or two from the rest of the fortress to prevent the water that will enter it from escaping out into the tunnel beyond.
Make three mechanisms.
Use one to build a lever outside the farm room.
Make a floodgate.
Build the floodgate at the end of the tunnel leading to the river, next to the wall tile that separates the tunnel from the water on the other side.
Use the other two mechanisms to connect this floodgate to the lever.
Pull the lever, opening the floodgate, exposing the wall tile.
Have your miner break through it to breach the river. He or she will high-tail it out of there and the room will proceed to flood. I recommend waiting until the water inundates approximately half of the room before pulling the lever again to seal the leak with the floodgate (though perhaps a little earlier since dwarves seldom get around to pulling a lever quickly enough).
The water will eventually evaporate and you'll have nice, farm-able mud! :3