Can't remember the name of the perennial veg I'm looking for - can you help?

Hi All

A few years back I saw reference to an uncommon tall green leafy plant that could be used for livestock fodder. I wanted to look it up again now to see if it would fit a niche area I've got. All I can remember about it is that it grew over head high and had a double barreled name. Can anyone suggest the name of what I had been looking at? Thank! Mary

Kale might be what you are looking for.  It's only recently we've considered it human food.  It used to be for livestock and famine.

https://permies.com/t/giant-kale

Jerusalem Artichoke?

Robert Ray wrote:Jerusalem Artichoke?

if you're in a warm enough area, this is probably it. where i live (zone 9b) it takes over roadside areas, and my rabbits love it. plus it's a pretty plant, and you can eat the roots.

Collard greens and tree kale both match your description. They were traditionally grown mainly as livestock fodder in several regions. Some varieties can grow as tall as small trees, they are perennial where I am and massively productive.

I grow them for me and my goats...  I grow Couve Galega and Jersey Walking Stick. Both are delicious and make huge tasty leaves that are somewhere between cabbage and kale.

It must have been tree kale - the description sounds about right. I'm trying to start patches of perennials that I can cut for fodder for the cattle if we get into another drought scenario where hay becomes unobtainable. Thanks for your suggestions!