I have been punching grass and tall glass for quite some time and none of the seeds are appearing. I suppose I will eventually add the seeds to sieve but at current time punching grass is the only method of obtaining.

What?
Actually Additions seeds don't drop from tall grass, and they never did and never will.

ahh I was under the assumption they dropped from grass from FTB wiki I see now I was looking at the Canola Seeds from Rotary Craft. I guess I need to add them all to the sieve when sieving dirt.