Thoughts on Westland Ericaceous Planting & Potting Mix

Hello has anyone used this product , if so what are your thoughts
Does it need to be mixed with top soil or can i put it in a pot and then put the plant directly into this without mixing with top soil

 

If its an Ericaceous loving plant then yes plant it directly into 100% compost.

Pointless adding soil as it defeats the point of using an Ericaceous compost.
The soil will likely not be as acid, possibly even alkaline.

What plants are you looking to pot up ?

 

I'd add soil if its a long term potting, you can get ericaceous JI compost, ideally I'd use half and half if you can find some.
If not I think you might need to feed and top up more.

It would be good to know what you are potting up.