Variegation and colour in plants

If you search online for information about variegated plants, you’ll find plenty of blog posts offering to explain how variegation works and describing two or three different types. I’ve read lots of those posts, both when I was first learning, and more recently when I’ve wanted to explain things to other people. But they’ve never […]

Don’t ask an AI for plant advice

Plant seller Horti recently added an AI “plant doctor” to their website. Within hours of testing, it was offering potentially fatal advice.

What is a wild type plant?

In the world of cultivated tradescantias, there are some plants which people refer to as “wild type”. This is a pretty ambiguous term that doesn’t do much to help identify plants – the best approach in these cases is to use cultivar names instead.

Naming rules

This article is a plain english rewrite of the ninth edition of the International Code of Nomenclature for Cultivated Plants (ICNCP), which is the set of rules about how cultivated plants are named. Because it’s simplified, some information has been left out. This version is aimed at people who are naming new plants, or who […]

Is Tradescantia zebrina ‘Tikal’ dangerous?

Some people have suggested the plant has symptoms of a viral infection. Some have even gone as far as to claim that the plant should be quarantined or banned from sale for fear that it’s contagious. Others have grown the plant for years and report no evidence of the symptoms spreading to nearby plants.

“Pink Congo”, misinformation, and the downsides of global plant distribution

If you’ve been interested in houseplants for more than a year or two, you probably already know the original “Pink Congo” story. A few years ago, a new plant called Philodendron “Pink Congo” came onto the scene. Its lower leaves are dark green, but the new leaves at the top are bright pink. It quickly became a wild hit among tropical plant enthusiasts and prices skyrocketed.

Systems of plant naming

Plant names can be complicated. It seems like it should be easy enough to refer to a plant and have another person know what you’re talking about. But as soon as you get into plant-related conversations you quickly end up in a tangle of Latin, confusion, and even misinformation.