Blue hydrangea

Hello Kathleen
Simply add something rusty just below the surface of the soil.....making sure it cannot be seen ....especially if you have youngsters.....
hope this helps

or you can get a liquid feed that you apply in the spring

Tell mine a few dirty jokes and a few sob stories - keeps them 'blue' all year.

Oh BB - another laugh! What have you been up to today????

Kathleen -Play it some Des O' Conner records......!

Coffe granules around the plant may help