Often you don't even need seeds from neighboring land. The soil that remains often still has seeds sitting dormant waiting for conditions to return to healthy.
Reading this feels like a great metaphor to life that I am unable to explain but I will still try, in the sense that, within a degraded land with just the right conditions, it is just waiting to grow :D
nahīñ hai nā-umīd 'iqbāl' apnī kisht-e-vīrāñ se
zarā nam ho to ye miTTī bahut zarḳhez hai saaqi
Do not despair over barren fields.
The soil is so fertile; a little rain is enough.
(The entire Urdu poem which probably is comparable to Emily Dickinson's "Hope is the thing with feathers" is pretty good).
This is good, I found another one to express what I was feeling.
We are here, We are waiting.
- Optimus prime.
My interpretation is that everyone no matter how bad things look from outside has hope/seeds of hope which are just waiting for the right conditions.
https://www.youtube.com/watch?v=dJszUl1EI4A (I also feel like, the ending of this movie/transformers was one of the best movies and the ending still gives me goosebumps in hope for future)