Since the seed companies are putting two varieties in one pellet, I thought I'd try seeding two in one
cell. I did blue Nolana with white Brachycome Daisies, and white Nolana with blue(mauve?) brachycome daisies.
These two are about the same in growth rate.
It would not work with--- say petunias--- because they grow much faster and stronger.
Next year I'll try other combinations.
Saves space under the lights!