Golden Seed is an Upgrade Material in the Elden Ring. This is a very special item that allows you to upgrade the number of Crimson and Cerulean Flask Uses. You need total of 30 Golden Seeds to get a maximum of 14 Flasks. Here is a list of locations where you can get it, will update as i progress through the game
Keepsake: Golden Seed 1
Can be selected as the starting Keepsake
LIMGRAVE 1
Found In Stormhill, on the path from Stormgate to the Stormhill Shack.
Stormveil Castle 1
Can be found at the castle grounds of Stormveil Castle
Stormveil Castle 2
Can be obtained by defeating a Lesser Ulcerated Tree Spirit in a hidden underground area
Liurnia Of The Lakes 1
Can be found on the ground West of the Raya Lucaria Academy’s courtyard
Liurnia Of The Lakes 2
Found under a Phantom Tree in the manor’s upper level.
Liurnia Of The Lakes 3
Found beside poison Pods
Weeping Peninsula
Follow the main road and climb up a small hill
Siofra River
Can be found in Siofra River
Capital Outskirts
Two can Golden seeds can be found under the Phantom Tree in the northwestern outer wall section.
Capital Outskirts 2
Two can Golden seeds can be found under the Phantom Tree at the Capital Outskirts.
Mt. Gelmir
One can be found underneath a Phantom Tree.
Lux Ruins
Found just north of Lux Ruins
Leyndell Royal Capital
Found on a balcony