Purple Shamrock: Plant Care & Growing Guide Purple shamrocks (Oxalis triangularis), also known as false shamrocks, sport nearly black foliage. Learn how to care for these interesting plants. Source: Purple Shamrock: Plant Care & Growing Guide Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Reddit (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading... Related