Just a weed...

[Grumpy John]

... but interesting to photograph.

[Isac]

I love it John. I would like to offer a little something to make it pop a bit more If I may.
If you use my VIGNETTE action in "Fun Stuff Actions" you may get a better look - just a thought. Here's my version and the layers panel.

Layers Panel:

[Grumpy John]

Thanks for the comments and alternate take Isac. I used NIK Silver Efex Pro2 for the B/W conversion.

[Isac]

You might think I'm a bit of "dull boy" but I prefer the PS controls for B&W conversions. I've relegated NIK to the side lines for now. Much more fun in PS.
Even with a simple B&W adjustment layer you can control all of the colour tones with sliders to get some really punchy effects. Then there's the power of the "Calculations" method - it's very powerful!