Pam’s Get all the Seeds Mod 1.12/1.11.2 makes all the seeds in the game in addition to wheat drop from tall grass.  Use the config file to turn off seeds dropping or change their frequency.
Pam’s Get all the Seeds Mod
Block IDs: None, Item IDs: None, Config File: Yes

Requires:

 Minecraft Forge

How to install:

  1. Make sure you have already installed Minecraft Forge.
  2. Locate the minecraft application folder.
    • On windows open Run from the start menu, type %appdata% and click Run.
    • On mac open finder, hold down ALT and click Go then Library in the top menu bar. Open the folder Application Support and look for Minecraft.
  3. Place the mod you have just downloaded (.jar file) into the Mods folder.
  4. When you launch Minecraft and click the mods button you should now see the mod is installed.

Pam’s Get all the Seeds Mod 1.12/1.11.2 Download Links:

For Minecraft 1.12
 Download from Server 1    Link 2