Can lupine be planted with lilies
I recently planted a lupine in the correct soil and light conditions so I thought maybe it was the lilies. It never recovered from be transplanted.
There should be no reason Lupines couldn't be in a garden bed with lilies. They are cold hardy to zone 4.
Lupines would be difficult to overwinter in your zone 3 garden. You can grow them as an annual, and if they were to seed that would be great.
If you place new plants in the garden water them well.