[ It certainly could or would be. Symbolism is certainly...something. Blade wouldn't call himself a master of someone's psychological state based on the appearance of such things in particular, but it is what it is.

But...

Because he isn't, his mind, half-wonders - is it him who has planted them intentionally? Blade can't envision it; maybe he's wrong. A crazy level of distorted sentimentality doesn't rule it out, but... ]

...this space is not only haunted by him. Whatever flowers that could have been meant to be here, might have been overwritten. Could have been made to be brought here by something else.

[ The inherent stable nature of this place means that this is possible too, isn't it? ]

A sign of the further deteriorating space. And maybe, a warning.

[ An appropriate omen. ]