Karl Foerster Feather Reed Grass Tree The most important “don’t” is

The most important “don’t” is pruning at the wrong time—this hydrangea flowers on old wood

Divide mature clumps in spring or fall if they become crowded

In late summer and fall

commonly reaching 4–7 feet tall with a mature spread of about 3–5 feet

Karl Foerster Feather Reed Grass Tree The most important “don’t” isStrong vertical form that sharpens the whole planting Karl Foerster Feather Reed Grass is one of the best ornamental grasses for bringing crisp vertical lines into the landscape. Its narrow clump of green foliage stays tidy at the base while tall flower stems rise above it in a strongly upright habit. That clean silhouette makes it especially valuable in foundation plantings, perennial borders, and modern designs where structure matters just as much