
Mystery Plant Identity Revealed
A while back, I sent out a question via Twitter to see if anyone could identify this plant I was seeing explode all over the neighborhood. I asked everyone I passed on my walks if they knew and still couldn’t find the answer, so I printed out the pictures and took them to a meeting of the Wellington Botanical Society for help. (Thank you BotSoc!) I’m pleased to present you these images of Karo, also known as Pittosporum crassifolium.
Though Karo is naturally coastal, it’s apparently new to find it farther South than Poverty Bay. It seems to be doing very well this year on Wellington’s Eastern peninsula. It certainly sounds like a good match for the conditions. According to Trees for Survival, a site with good resources on New Zealand native plants, it’s an excellent shelter plant that’s extremely resistant to wind, and particularly good near the
coast where salt spray makes it hard for other plants to establish.
In traditional Maori medicine, a gum is extracted from the bark and used by itself or together with that of pÅ«hÄ (Sonchus species) as a cure for bad breath, sore gums or other ailments of the mouth.

Karo - Pittosporum Crassofolium near Tarakena Bay
How to identify your own mystery plants
Recently I’ve received a few personal plant ID requests I didn’t recognize – this is one area where all of us is definitely better than one of us. Harness the power of crowdsourcing and cognitive surplus by posting your image and question to a forum for identifying specific plants or a regional botanical or gardening group. Here are some active ones that might be helpful:
- Dave’s Garden: Do you have a mystery plant or tree? Post an image (preferred) and/or a detailed description, and your fellow gardeners will help you figure out what it is.
- UBC Botanical Garden and Centre for Plant Research: Plant Identification Forum
- GardenWeb: Name that plant
- GardenGuides.com Plant Identification
- GardenStew ID Forum
- CactiGuide.com for the positive identification of cactus family members
- Plantcare.com Plant Identification Forum
- Aquatic Plant Central Plant ID Forum