you know peonies don't need ants to bloom? This is
a common myth.
what are the ants doing? Peony buds have sweet sap
(nectar) and the sap attracts ants and other insects,
but these insects are not required to help open up
the bud. The ants are also not hurting the peonies,
so it's best to leave them alone.
do have specific requirements in order to have plenty
depth: Not too deep - buds should only be one
to two inches below the soil. If you plant deeper,
you'll get lots of leaves, but very few flowers.
It may take up to 2-3 years for peonies to bloom
after they've been moved and/or divided.
If peonies are fertilized with high amounts of
nitrogen, you'll get plenty of leaves, but fewer flowers.
If your peonies get less than six hours of direct
sunlight per day, you'll get fewer blooms.
to help you care for peonies:
Care (University of Nebraska Cooperative Extension
in Lancaster County)
Backyard Farmer (Questions/Answers on Peonies)