Hello Amy S

Do you mean which POLLEN to put from one plant onto another?
It does not matter where you grow your seeds. You can have a common and a rare plant growing next to each other and one will not kill the other.
Also, pollen from a rare plant placed on a common plant with not kill your plants either. Nor will pollen from a common plant placed on a rare plant.
It is fun to experiment.
As long as you have the right soil and water your plants, they will not die.
I hope this helps. Good luck.
I love Plant Tycoon and play it over and over - it is addictive!
