Beardie outside foraging

[Krystal0]

Hello all,
My question because I'm new to dragon owning,
Rusty my male fully mature dragon NEVER eats his greens like ever.
Today i took him outside because he seems very restlessness, digging and glass surfing,
Put him in a Sandy spot by garden, and he starts eating grass leaves all kinds of stuff, i grabbed what i could away from him and gave him dandelion leaves i could find, what do you know he eats them, keeps eating them and keeps foraging for more.
Should i put live plants in his tank?
He has 120 gallon tank, that's pretty new as well and i think he might be little disturbed by all the changes, question actually is, will anything he could have got in grass today, be harmful, should i stop letting him in the garden area?
Thx guy's

Anything natural no plant.

 

[Toothless & Lil Man mommy]

Of course, I'm kinda proud of it,
The 2nd beardie just passed away, she was, the girl swears, close to 20 yrs old, Rusty she says is 14, but he doesn't act like a senior, he runs around and usually eats his bugs without trouble, after stumpy passed, i cleaned entire tank and he now has whole set up, but he is litte cautious and is not eating like normal, but I'll send u pic and stop being so long winded

yeah i was thinking bout doing something like how you got yours set up for my baby girls when i get it all done i will come and posted a pic of it ima work on it this weekend well today lol