Athletes prepare for competition by visualizing their effort in minute detail. We like to think of gardening as a sport. So this time of year we're dreaming of dividing, picturing just how it will go.
Here are photos to help you make more of two very beautiful native plants, turtlehead and queen of the prairie. We divide them to keep the planting young and vigorous, to keep it from overstepping the space there is for it in the garden, and to give starts to friends.
One clump can become many pieces. We lifted a clump and rinsed the soil away so we could remove from it the roots of a non-native, aggressive runner called
gooseneck loosestrife (Lysimachia clethroides).
They're vigorous growers, turtleheads are. Every piece of subsurface stem or stolon with roots and a shoot will make a nice start for some spot that's rich, well-drained, continually moist soil and in part shade. The division on the right, above was just two stems last year but those two stems socked away enough starch to reproduce themselves and send 6 or 7 new stolons questing outward.
This queen's big and beautiful.
However, she's prone to develop mildew in late summer. Mildew's especially likely if the soil tends to dry out or is poorly drained.
We've rinsed this root so we can show you how many pieces can be made from it, and why we'd discard the center.
About that old center: We mean the stem base which is the upper face of the thickest section of that root shown above.
Not to make less of another queen of the plant world, but peony is one of those that can't hold a candle to queen of the prairie when it comes to barring infection. This big root Janet's holding was so pitted and hollowed by old infections that the only way to make worthwhile divisions was to cut it up, then wash the divisions well and dip each one for a minute in a 10% bleach solution
If you plan to divide something you can't visualize, ask in the Forum. Let someone to show you or tell you what the root of your target plants look like.
Any runner that creates offsets, like the queen, the turtle and the peony, is divided as they are. If it's a bulb like the Allium below, you simply need a different vision!
Note: Turtlehead is endangered in Michigan, Kentucky and Arkansas, and threatened in Maryland. Queen of the prairie is endangered in Illinois, Maryland, New Jersey and North Carolina, and threatened in Michigan and Iowa. In those places you may be in violation of conservation law to disturb the plants or collect seed from any colony of the area's native genotype. More about this restriction in Growing Endangered and the articles related to it including One Region's Lack and Native Plant Growers.