Note: this doesn't work with chickens or ducks.
Celias is under her bed in her room upstairs and Namis is on the table in her room.
give the seed special properties (however, this will not work for tree seeds.)
Happy Lamp:
These are the small red tulip-like flowers that grow near
Gustafa's hut during the month of Summer. Feeding Tartan a seed and a Happy
Lamp flower will allow the seed grow in any season.
Gemsoil:
These are the golden flowers that grow near the ruins in the month of
Fall. Feeding Tartan a seed and a Gemsoil flower will allow the seed to be
planted anywhere. This is very useful for second and third generation crops,
as they can normally only be planted in semi-fertile or very fertile soil.
Upseed:
These flowers are rare, but very, very useful! They are the orange and
yellow flowers that grow in various places during the month of Winter (you can
find one on the path to the ruins and another near Cody's house.) Feeding a
seed of B or A quality and an Upseed flower to Tartan will result in an S-rank
seed. This isn't the only way to make seeds a higher quality, though: mixing
an S-rank seed with an A or B rank will probably do the trick, too