1. Units in Woody and Herbaceous Plants (Hrt 211 and 212)
The woody plants units cover plants by Plant Family.
When a Family is covered, usually all the plants or Genera and species are covered
at that time. The Family is usually not repeated. Some Families, like the Rosaceae or
Rose Family, have a large number of Genera that are in landscape use. The Rosaceae
Famly is covered in several units.
The Order of Plant Families covered in Hrt 211 is based partly on fall color and
retention of leaves. That is why Oaks and Gymnosperms are covered later.
The Order of Plant Families covered in Hrt 212 is based partly on the order of flowering
in the Spring.
The herbaceous plants units cover plants by Topic and Family.
These topics like herbs, etc. are not perfect and you will find plants covered that may
not always fit the category. The Family is often repeated in more than one unit.
Some plants fit in more than one category, and a few may be repeated in more than
Remember, that some Plant Families include both woody and herbaceous plants.
Weedy plants are included in various units where the Family is covered. Some weedy
plants have cultivars that are used as ornamental plants. Remember, a weed is not a
bad plant, just one that grows where you don’t want it to. Plants need to be a little
aggressive to survive in a garden.
Some plants are fine ornamentals in Michigan, and weedy or very aggressive farther
south. It is not practical to totally ban these plants in the north.