How do seeds work?

[Ryu]

Like I have made some but i don't know some things like do traits matter on a seed or can i use a quality 999 seed and get the best outcome for that seed when planted?

[Cannon Fodder]

according to one of the Guides https://steamcommunity.com/sharedfiles/filedetails/?id=1908383455

i followed though i dont really work with seeds myself,
"I don't recommend to plant seeds before you can synthesize good seeds.

You can get very high quality gathering materials form seeds. Products' quality floats between about half to maximum of seeds' quality. So if you craft 999-quality seeds, you have a chance to get 999-quality products.

The effect "Rare Gather Rate Up" means you have a chance that some special effect can be applied on the products. These effects are Element Value +1, Synth Quantity +1, Effect Spread +1.

As a result, it's better to craft 999-quality seeds with all max effects, and replicate them, and plant them to get the best products.

Listing all the products is difficult. I just list some useful materials that you can or cannot gather form seeds.

You can Gather:
all Elemental Cores
Dunkelheit
Golden Crown
two Lake Masters
Lapis Papillion
Gold Puniball

You CANNOT gather:
Eternal Crystal
Solflower
Shining Sand
Eternal Fire
Heroic Spirit
Golem Core
Giant Puniball
Dragon's Eye
Old Knight Emblem
Mythical Hide
Rainbow Gemstone
Holy Arbor Crystal
Amber Crystal
Amber Fragment"