Seed Of Life 1 and 2 – Can’t miss these, you will get it as a reward for a quest from Pippa.
Seed Of Life 3 – To the South west of your first base you can find a cave entrance. You will need a slab of earth to go inside and find a chest. Kill the two enemies and open the chest to get another Seed.
Seed Of Life 4 – West of that cave you can see a tower of earth that goes up quite a ways. Bring some earth blocks and climb up to the top to grab another Seed Of Life. There is fall damage so don’t jump off.
Seed Of Life 5 – After you get your city to level 2, Rollo will give you this as your reward.
Seed Of Life 6 – You can get this one after you use the Teleporter. To the north of the Hammer guy who keeps saying “I’m Bored”, there is another hammer guy down below. Talk to him and he will tell you to build blocks up to the chest down there. In that chest is another seed.
Seed Of Life 7 – When you return with the Warrior and talk to Larouche he will give you another seed.
Seed Of Life 8 – When you get the town to level 3 and complete the quest to get the town to level 3 you will get another Seed Of Life.
Seed Of Life 9 – After you get the evil Idol statues and return to town you will have to defend it again. After you defend it you will get another Seed of Life.
Seed Of Life 10 – Quest reward for creating a steel barricade.
Seed Of Life x3 – You get these at the end of the chapter when you have to defeat 3 waves of enemies, each wave you beat gets you another Seed Of Life.