Help...i fed wrong plant food to my blueberries!!

i fed my blueberries yesterday for the first time this year, it was only when i opened my shed today and found the feed for eracacious plants that i realised what i'd done. i have given them miracle grow water soluble all purpose plant food, i did mix it in with rain water, Do you think they will be ok, or will i have damaged them in some way by not using the proper one?

 

they ll be fine as long as you did nt use it too strong

 

Dont worry
All purpose with rainwater should be ok.

 

Thankyou Lady gardener and Roders,
they are budding lovely now, and i wouldn't want to think it might kill them.
Thankyou both for the replies
Gill