As nouns the difference between seedtime and seedness
is that seedtime is the time to sow a seed while seedness is the state or quality of being seed.
seedtime
English
Noun
(
en noun)
The time to sow a seed.
* Milton
- Seedtime and harvest, heat and hoary frost, / Shall hold their course.
(figurative) A time for new development.
seedness
English
Noun
(
-)
The state or quality of being seed.
(obsolete) seedtime
- (Shakespeare)