This was a leap-of-faith project during Michigan’s bleak COVID-19 “shelter-in-place” period. I’m documenting it here as a plan for building a hugelkultur bed on a small city lot as well as to preserve a pleasant COVID-19 memory. Behold the thriving hugelkultur mound:
Hugelkulturis a permaculture concept where you pile up organic material (logs, leaves, compost, etc.) and then grow a garden on top of it. Here is a good explanation of hugelkultur and its benefits. It’s also a fun word to say. We refer to our mound as “the hugel” [German for hill].
This was the perfect COVID-19 project. Under lockdown in April, we had nowhere to go. I was spending lots of time with my kids at home during the day. And I wanted to be outside. Building a garden bed with the materials at hand was a small act of protest against the feeling of being dependent on a global supply chain whose fragility had suddenly been exposed. I couldn’t easily get soil or lumber delivered for a conventional raised bed. And crucially, the city’s compost and yard waste collection was about to resume for the spring, so my neighbors had their maximum amount of organic material awaiting disposal.
Last year I grew curly kale (starts from the farmer’s market) and Red Russian kale (replanted annually in my own garden since about 2012). They overwintered, flowered, and are now falling over under the weight of their seed pods.
I plan to harvest the seeds and wondered, will the resulting plants be a cross between the varieties, given that the plants are flowering just a couple of feet apart from each other? It appears they won’t, because the two kales are actually different species. According to the Comox Valley Growers and Seed Savers (2015):
All the curly kales and the lacinato belong to the brassica oleracea species. They will cross with each other and with many other crucifers – cabbage, broccoli, brussels sprouts, cauliflower and collard greens.
The Red Russian and Siberian kales belong to brassica napus species and will cross with each other but not with the other kales. They will also cross with rutabagas, rape and canola. It seems that the napus variety can self pollinate without suffering from inbreeding depression and also it does not have a self incompatibility mechanism which so many plants do.
So the two varieties of kale should stay true in their seeds. We’ll see next year!