a celosia of some type? ... ken

https://duckduckgo.com/?q=puprle+celosia&t=ffcm&iar=images&iax=images&ia=images

btw .. a cocks comb.. is also a celosia .... though common names can be tricky ...

check out the latin names at this link ... and flip to the images side ... ken

https://duckduckgo.com/?q=cockscomb+flowers&t=ffcm&ia=web

It's pretty useless to ask w/o a photo.

As useless goes, it is, isn't it.

Could it be an amaranthus?

Or perhaps an ornamental sorghum.

Try doing a web image search or the plants suggested as well as cockscomb plant to see if any resemble what you saw.

Its not a perennial but look up grain Amaranth and see if it fits. There is a deep dark maroon type.

If the leaves really are spear shaped it doesn’t sound like Amaranth. It has to be a monocot, something like a bulb or a grass. Yoyobon, can you describe these leaves in more detail?

And so far you haven’t given us any idea of where this is growing in the world or what sort of habitat it’s in. Garden? Wild? Forest? Meadow? Bog?

Could it even be a Typha?

Okay.......here's a photo !

THANK YOU !

Aha, spear HEAD shaped! I was thinking more iris, gladiolus sort of a leaf.