LN \remove NOSPAM\ said:

I'm very new at gardening. I started with a small patch in the front of my
house a couple of years ago. Last year I worked on starting my back garden.
Since then, I've realized I should have my bleeding heart where my coreopsis
is and vice versa. Neither does it's best where it is. My bleeding heart is
done blooming (I'm zone 5) and my coreopsis hasn't started yet (not enough
sun where it is). Can I swap these out now, or do I have to wait til
fall/early spring? I'd hate to miss the season for the coreopsis, but don't
want to hurt my bleeding heart.

Do you have a large enough pot to pot up the coreopsis? If so, I would suggest
you transplant the bleeding heart and pot up the coreopsis. Then, slowly adapt
the potted coreopsis to being in the sun (like hardening off tender bedding
plants in the spring).

I've moved volunteer coreopsis plants in the late spring and still had them
bloom, but only between areas with similar sun exposures. They also needed
to be watered or misted every afternoon for many days because some root
loss is unavoidable. Since you are also changing the sun exposure, your
plant would have a double handicap (thus I suggest potting it up).

--
Pat in Plymouth MI

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)