based on what they said in the F4F the seeds drop in group classes. Well here's the quote from the F4F...
Are you saying I only have 1 chance out of 16 of getting the seed I need?
"Not quite, but each time will indeed be a dice roll. There are 12 different monsters that will spawn the seeds. The plants and monsters have been divided into 4 groups: Monster Group A, B, C and D each count 3 monsters, then we have Plant Group 1 to Plant Group 4 that each contains 4 new plants. All 12 monsters will spawn fragrant seeds, but monsters of Group A will also spawn the peculiar seeds from Plant Group 1, while monsters of Group B will also spawn the peculiar seeds from Plant Group 2 and so on. So basically, when hunting monsters from Group A, you have 1 chance out of 5 of getting a specific plant from Group 1. Ditto for any Monster Group and their matching Plant Group. Note that you will never get a Group 1 seed from a Group B monster, etc."
So the way that breaks down to me is....
Group A = 3 Monsters = 4 Plant Types
Group B = 3 Monsters = 4 Plant Types
Group C = 3 Monsters = 4 Plant Types
Group D = 3 Monsters = 4 Plant Types
So I'm going to guess our mission at this point is to figure out which plants are in which monster groups as well as figuring out which monster is in which group lol. So eventually the chart will look like soo....
Group A = Monster 1, Monster 2, Monster 3
Plants Dropped in A = Plant 1, Plant 2, Plant 3, Plant 4
Group B = Monster 4, Monster 5, Monster 6
Plants Dropped in B = Plant 5, Plant 6, Plant 7, Plant 8
Group C = Monster 7, Monster 8, Monster 9
Plants Dropped in C = Plant 9, Plant 10, Plant 11, Plant 12
Group D = Monster 10, Monster 11, Monster 12
Plants Dropped in D = Plant 13, Plant 14, Plant 15, Plant 16
At least that's the way I'm reading it, so far I can personally confirm seeds dropping off the following creatures....Along with the creature hint I think they are....
Hiyru = Tokuno Bipedal
Kappas = Tokuno Bipedal
???? = Tokuno Bipedal
Ant Lion = Bug-Type
Terathian Warrior = Aracnid
Titan = Despise (Among other places)
???? = Swamp Creature
Serpentine Dragon = Karma Sensative Creature Ilshenar
Dryad = Twisted Weald
Juka Mage = Humaniod Caster
Mummy = Undead
Wisp = Compact Size Creature
The ????'s are the creatures I haven't found yet.
Ok after reading down through the rest of the post I went and killed a few Serpentine Dragons and realized that those may be the Karma sensative creatures instead of the Wisp and the Wisp may be the compact size.