Portland Community College | Portland, Oregon

Course Number:
HOR 272
Course Title:
Summer Annuals & Perennials
Credit Hours:
Lecture Hours:
Lecture/Lab Hours:
Lab Hours:
Special Fee:

Course Description

Covers botanical characteristics and field identification of common annuals and perennials. Emphasizes cultural requirements, pests, diseases, and landscape uses of plants with a concentration on annuals and perennials. Prerequisites: Audit available.

Addendum to Course Description

Plant material identification skills are basic to all parts of the horticulture/landscape industry. The focus is on summer herbaceous annuals and perennials. In this course students are required to identify plant materials by both botanical (scientific) and common names. All of the plants studied are used in landscapes in the Pacific Northwest.

Intended Outcomes for the course

Upon  completion of the course students will be able to:

  1. Identify and discuss annual and perennial landscape plants in the field based on botanical characteristics.
  2. Communicate about plant taxa by using Latin binomials and common names.
  3. Match plants to site conditions based on cultural requirements.
  4. Organize plants into groupings based on cultural requirements, size and form.

Course Activities and Design

Lecture time will provide the basic botanical information needed to make accurate field identification decisions and will cover the general requirements for growing healthy, useful plants.

Lab time is spent in the field directly observing plant characteristics for identification.

The electronic plant reference requires students to pull information from a variety of sources to organize plants learned in the class, as well as other plants they may be interested in, into a usable guide for plant selection based on site conditions and cultural requirements of the plants.

Outcome Assessment Strategies

Student learning is assessed by:

Plant identification quizzes in the field (3-4 per term)

A written exam at the end of the term that tests

A final plant identification exam in the field

Evaluation of the course project (Electronic Plant Reference)

Course Content (Themes, Concepts, Issues and Skills)

  • Field Identification of 100 - 110 plants
  • Plant Information
    • Botanical and Common Names
    • Family
    • Plant Type
    • Form
    • Growth Rate
    • Mature and Landscape Sizes
    • Physical Characteristics
    • Exposure
    • Soil Requirement
    • Water Requirement
    • Diseases and Pests
    • Propagation
    • Landscape Use