I have decided to but some Canna Terra Professional (50L) soil. I'm not to sure what else I need from the below types. These will be used outdoors.

- Canna P-K 13/14
PK 13-14 is high in phosphate and potassium feed which is specificly designed for the late flowering stages of growth and should be used in combination with a full nutrition tank about three weeks from the end of your flower stage.
- Canna Terra Flores
Especially designed for the flowering period when working in soil and should be used in combination with PK 13/14.
- Canna Terra Vega
This is a specially designed for the vegetative growth of plants when in soil. It provides all the essential nutrients required to work in harmony with the nutrients extracted from the soil.

: Do I need to buy them all?
: Is there anything else?
: I believe these are the correct ones which are needed - right?