These Kelzak shots would be Sentai footage  
Here's when it goes to new footage, this shot in the middle of Blue Ranger fighting Kelzaks
These shots   are when it goes back to Sentai footage due to the vines.
This shot of Red on the ground is when it goes back to new footage
This is also new footage
I'm assuming that's new footage due to them needing to reshoot a scene since in Hurricanger, when Florabundacus first makes physical contact with him without his vine, it looks like he's grabbing the neck.
This shot of the 2 of them is when it goes back to Sentai footage
Here's when it goes back to new footage, a solo shot of Red however the vines are wrapped around/on him
Here's when it goes back to Sentai footage, this close-up shot of Flora's face
Here's when it goes back to new Red footage once again
This faraway shot of Flora and Red is when it goes back to Sentai
Here's an exterior shot of the Belrab Botanical Lab
Here's new footage of Florabundacus due to her being seen in the lab in Ninja Storm  
Here's when it goes back to Sentai footage  
Here's when it goes back to new footage for Kelzaks
The mischievous Plants in Ninja Ops, all of those plants would be new footage. There's no tricks with those shots.
These stairs signal it being back to new footage They tried recreating the set as well as the stairs as closely as possible according to the Hurricanger set but the sets aren't that close.
These shots of Flora  would be back to new footage.
Here's Tori and Dustin in the same shot as Florabundacus which is new footage, it's not a case of the actors being edited into the footage
These shots of Yellow is when it goes back to Sentai footage  
Here's when it goes back to new footage, these shots of Red  
Here's new footage of the Hawk Blaster
   
Here's when it goes back to Sentai footage, once you see this beam from the Hawk Blaster hitting the vine
Here's when it goes back to new footage, this time it's more a front shot of Red while he's holding the Hawk Blaster
This shot of when the vine begins to grow is when it goes back to Sentai footage
These shots of Red is when it goes back to new footage
   
This up-close shot of the Sword is when it goes back to Sentai footage
Here's new footage of the Boots
Here's the a Sentai sequence which is when it goes back to Sentai footage
Here's when it goes back to new footage  
Here's when it goes back to Sentai footage
These shots of Blue is when it goes back to new footage  
Here's Florabundacus, still in new footage
This shot of Flora in front of a building and cars is when it goes back to Sentai footage
Here's new footage of the vines wrapped around Red's lower torso That wrapping had to be reshot because in Sentai, they were wrapped around his neck.
This shot of wrapped Red is when it goes back to Sentai footage
Obviously once the Scroll is seen opening up, that's Sentai footage however after it does its business and there's a flash of light, that's when you see new footage of a Giasnt Florabundacus
 
These shots of the Wind Rangers is when it goes back to Sentai footage