Best fertilizers for berries?

[TacticalSpeed]

I have 2 blackberry bushes, 1 raspberry bush, strawberries and this upcoming season adding blueberries. The raspberry bush always does very well no matter what. The others, not so much. I have been using Berry Tone, but clearly it's not working for me.

What are some other quality berry fertilizers for these particular berries? Liquid fertilizer preferred if possible.

 

[DirtMechanic]

The blackberry makes on last year's new canes. So after fruiting they get calcium nitrate to promote the building of those canes. Opposite that, in the very early spring I just use a balanced n-p-k to help the berries. Think about it by the function the plant is trying to do and when. (phenologically)

 

[DirtMechanic]

What NPK ratio are you using?

That is an irrelevant question. It makes you flare that I would dare! I get it. But no matter, it is actually only the plant uptake capacity that matters, so I ask you a question? Say you had this plant in a 5 gallon bucket, what quantity can it consume in the monthly march of temps and climate in any given month especially related to temps?