Wood- / phytokineticist verdant blast question

[Hubbaman]

Phytokineticist got a new composite blast in Psychic Anthology called Verdant Blast. It can choose to attack as S,P,B or positive energy.

The start of the infusion section of the player companion starts with this text:

"Both brilliant infusion and flash infusion (which can be learned as wood infusions) can be applied to a positive blast. Verdant blast can benefit from all the same substance and form infusions as wood blast and positive blast."

1.) Can you always use the flash infusion with the Verdant blast, or only when you attack with positive energy?

2.) Does it count as an energy blast when you use it with positive energy?

Bonus: I also wonder which blasts are associated with the following infusions:
deadly earth, Entangling Infusion, Impale, Pushing Infusion.

They all have Wood as an element, but no wood blasts are mentioned under blasts (I don't have the Origin player companion, so something might have been mentioned there).

Wood seems kind of fun now, just to bad they don't get the Fragmentation infusion.

[Hubbaman]

Nobody knows? Sadface

[Fuzzy-Wuzzy]

(1) I don't think any options depend on whether you choose to add positive energy, except whether there's positive energy, but I'm not... wait for it... positive.

(2) no, it says it's a physical blast so it's a physical blast, period.

(3) You didn't actually ask this, but I believe it does damage as slashing AND piercing AND bludgeoning (always) AND (optionally) positive energy too. You don't choose among the physical types.

[Hubbaman]

Thanks for the answer!

I just assumed that the Verdant blast had to choose damage type, the same way the wood blast does, but rereading it confirms what you said about the damage.

For the bonus question, I will just assume that all blasts based on the wood blast qualify for those blasts, even if they are not listed.

Flash infusion and brilliant infusion seems kind of weird on a physical blast, but I won't complain!