The hall was in complete pandemonium.  Crossbow bolts sung and whizzed past him, as he did his best to hug the wall. The false illusion in the room had not been dispersed, and the soldiers must not have seen him by the window, or they would surely have pincushioned him quite forcefully.

Moments later, the elf woman issued a challenge at the Baron, who was fleeing toward the exit at the back behind the absurdly dressed old man and his one-legged stooge. The man ignored her, seemingly in terror about the threats of the wizard, and very shortly after, she converted him and many of the crossbowmen into steaming piles of shredded meat with more of her explosive arrows.

This was the first time he had ever seen humans being killed like this.  He did not like it at all.

(Focus Cedar... Focus!)

He drew on the thin trickle of power he could slurp through the vines he had guided out into the field outside the palisade, then directed it into the rag-tag assemblage of plants he had scratched into the dirt just outside the window; his body still hugging the wall miserably, with his arm stuck out of it-- fingertips barely touching the ground.

A small hedge of sturdy wild roses spread haphazardly as he carefully entwined the root system of the greenbrier with theirs, letting the slow trickle get slowly absorbed by them.  They were not the 'best' to use for this-- something sturdier, like a copse of elm trees, with their natural root sharing properties, would have been far superior--- but this is what he had, and it was what he had to work with. Lovely green vines spread out on the courtyard bearing little yellow flowers, and lovely purple ones accompanied them, clinging delicately from the exterior, where they snaked up the wall on either side of the window.

Next, he needed to do something about that stupid old fuck-- who had just backhanded the small fox man like he was nothing. The latter proceeding to unleash a hail of illusory benches at the one legged ruffian still grappling with the flame headed conjuration, then pressing an attack on same...

He was feeling tired-- This much growth magic, this fast, using little more than his own reserves was not a fun experience. ... Especially after having not slept, and having to 'skip' breakfast. 

A smouldering ire burned in his belly along with the gnawing hunger-- the audacity of using food in this way! If that old fuck was behind this, he'd get a right whoopin' for sure.

He hoped the little 'insurance' he had just sewn outside would be sufficient to nitpick the old coot while the next phase of his plan slowly wore away the old man's reserves, much as his own were getting drained. With any luck, the old man would pass out first.

He took a deep breath, then took the plunge on enacting that plan--

Grape vines dug deep into the soil, seeking deeper water supplies to use than the shallower rooting plants they were struggling to share with at the surface, then coiled in through the window, up the wall, grappled and sent small streamers down from the ceiling, then coiled down the opposite wall in a wide, diagonally coiling advance up the room, before ducking beneath the table, and resuming the slow circuit, moving steadily toward the exit to the stairs, and the old man at the egress.

He did not have time to waste-- The coiling tendril he was guiding needed to branch out-- fill all the space on the walls, ceiling and floor- leave no gap where any outside energy could get in-- 

Smaller shoots branched off the sides of the larger one, covering the whole room in green, as the main shoot rapidly grew a thick woody bark as it thickened and fattened under his exertion. The ones near the feet of the remaining foot soldiers slithered like vipers around their feet and legs, continuing their coiling around bodies and arms while they were distracted by the false flying benches soaring at them.

He new better than to try and ensnare the wizard at this time-- He needed to really reinforce and imbue the 'cage' first-- Let the old man think he is not the target by distracting with the hired help first. Let his obvious hubris be his undoing. If he attacked that way first, the old man would likely effortlessly burn the whole room in retaliation, and ruin the entire plan. No, it needed time to work magic in a subtle way like this...