Sometimes black and white is a better choice than color. Once the color is removed, we can see the depth, designs, contours, and overall structure of a subject, unencumbered by the colors that could be distracting.
This interesting cactus was shot in a botanical gardens in Phoenix. It has interesting swirls that barely show up in the color version.
There are several ways to convert an image to black and white. It is relatively easy with either Photoshop or Elements, or Lightroom, or other software options like Silver Efex Pro (now available at no charge from DxO Optics, along with other formerly Nik software).
For this image I used Silver Efex Pro. I started with one of their pre-sets, and then did some tweaking of contrast in Photoshop. This was shot with an iPhone 6, and it is amazing how much detail the phone can capture when the subject is relatively large in the frame.
1/40 sec., at f/2.2, ISO 32. iPhone 6 with 4.15mm f/2.2 lens.
TODAY'S QUOTE: "Color is descriptive. Black and white is interpretive." --Elliott Erwitt