Sometimes you see a plant, or a photo of a plant, that raises your horticultural lust to somewhat unhealthy levels. At this point in life, that happens far less than it used to, but one plant that remained on my lust list for over a decade was the aroid, Pinellia ‘Purple Dragon’.
For those who aren’t familiar with pinellia, they are an Asian genus of only 9 species of hardy woodland aroids, related to Arisaema (Jack-in-the-Pulpit). I will admit to have eliminated most pinellias from the garden because they grow too well, and spread too prolifically.
The only Pinellia species we retained in the garden are the non-weedy Pinellia cordata and Pinellia peltata, which don’t move outside of a small area. Pinellia hybrids have also always intrigued us. The first hybrid to be named was from the former We-Du Nursery, Pinellia ‘Polly Spout’ (P. pedatisecta x tripartita), and is sterile unless it is grown near one of it’s weedy parent species. We have grown this in the garden since 2004, and it remains a solitary clump, producing no seed.
When we heard of a second hybrid (P. cordata x tripartita), the search was on. Pinellia x cortita ‘Purple Dragon’ showed up at NY’s Glover Perennials, which unfortunately doesn’t ship. We finally tracked down a plant in 2019, and have subsequently fast-tracked it in the production process, so we could share this amazing gem that excited us so much. As we expected, none of our plants have ever produced a single seed.
The only problem with the plant is the cultivar name Purple Dragon, which has been used for years as the common name for the purple-spathed form of the weedy Pinellia tripartita, which sadly many folks will probably confuse with this new sterile hybrid.
Pinellia ‘Purple Dragon’ is effectively an everblooming arisaema, with flowers being produced non-stop from spring into fall. The new foliage emerges dark purple and opens olive green on the top and purple underneath. This has proven to be an exceptional plant in our garden. Our trial plant in half day sun has thrived as well as our specimens in more shade. If you like Jack-in-the-Pulpits, we hope you enjoy this new treasure as much as we do.