Plant foods and nutrients any good (pics)

Hi all, just need some advice on nutrients, i found all this in my fathers shed and was wondering if any of it could be used to feed my plant, im not planning on feeding it until i get my ph tester tomorrow and get my ph correct first.

Ok some of the info off of the bottle in the first picture...
miricle gro ericaceous
for all acid loving plants
NPK fertilizer solution 8-2-2 with trace elements

some info off of tub in second picture....
Miricle gro all pupose water soluble
NPK fertilizer 15 30 15 with trace elements

some info off of the box in 3rd picture....
Miricle gro all pupose water soluble
NPK fertilizer 15 30 15 with trace elements

and lastly some info off of the box in the forth picture
Miricle gro all pupose water soluble
NPK fertilizer 15 30 15 with trace elements

Thats about it any help is greatly appreciated
Baz

anyone??????????

surely somone must know?