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“Yes. That was rather the point. It can check to see if there's even anything we really need to see in here. Also, could you have it go under the floor to look for traps?”

Alrius does his best to fire arrows, but finds himself without a bow.


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It looks like the Psionicists have bows...

"If someone has some oil we could have one of Ke$ha's servants carry it up to the top and then burn the plants. They must be protecting something. Once the oil is spread around light the oil with a torch. It might take a minute to clear out the smoke and such." Axid states.

“Perhaps as a last resort. I'd just as soon not fill the air in an enclosed space like this with smoke. Not that we can't easily escape if need be, but I'd still prefer to avoid it when we have other options. After all, if they can carry oil, they can carry a knife, and you graciously ensured we are all equipped with at least 1 dagger. And it's already been established that at least some of Ke'Sha's minions can completely ignore the thorns.”
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Stephen will approach to just before the point where the plants unleashed their fusillade of thorns at the zombie, paying close attention to the ceiling and the temperature of his talisman.

Stephen advances down the hall and stops a couple of feet shy of entering the room. The talisman remains at a nominal temperature, indicating it has not sensed a trap.

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the juju zombies are armed with +1 magical short swords. They could easily use those to attack the plants. It would take a few rounds, but still... Any other sword the party wishes to allow them to use* would be effective as well, because machete + plant = win.
*aside from Landro's giant-sized 2-hander