Presentation on theme: "Welcome to Horticulture! What the heck is it, anyway?"— Presentation transcript:
Welcome to Horticulture! What the heck is it, anyway?
Unit One: Plant Basics What is horticulture? How does a greenhouse work? Structure and function of basic plant parts (seeds, roots, stems, leaves) How to grow a plant from seed and keep it healthy as it grows Careers in horticulture
What is Horticulture? Horticulture has three major parts: Plant growth and maintenance Crop production Plant breeding The goal of horticulture is to improve plant quality, nutritional value, and resistance to insects, diseases, and environmental stresses.
Specific Types of Horticulture Floriculture: production and marketing of flowers Olericulture: production and marketing of vegetables Pomology: production and marketing of fruits Landscape: production, marketing, and maintenance of landscape plants
Focus of Our Class In this class, we will practice floriculture and landscape horticulture This practice includes: –Propagation: production of plants from seeds or cuttings –Growth and maintenance: keeping plants healthy as they mature to adults –Marketing: setting up a Plant Sale! –Designing: turning your floriculture into products that consumers will want
The Almighty Seed
What is a Seed? Seeds are the fertilized eggs of flowering plants and evergreens ‘Nuts’ and ‘Beans’ are actually seeds Each scale of a pine cone is a seed
Parts of a Seed A seed consists of an embryo surrounded by a food supply and protective covering –Food supply is called a cotyledon –Protective covering is a seed coat –Also have beginnings of first stem and root, called apical meristems
What Seeds Need to Grow Seeds will germinate (break out of seed coat and grow roots and stems) when conditions are absolutely right –Soil nutrients (nitrogen, phosphorus, etc.) –Water levels –Temperature –Humidity Because seeds have a food supply, they will stay dormant for weeks, months, or years until the conditions are right!
Monocots vs. Dicots Flowering plants are classified as either monocots or dicots, based on: –Seed structure –Leaf veins –Flower parts –Type of roots –Stem structure
Monocots vs. Dicots MonocotsDicots SeedsOne cotyledonTwo cotyledons LeavesParallel veinsBranched veins FlowersPetals in multiples of 3Petals in multiples of 4 or 5 StemsVascular bundles scattered throughout stem Vascular bundles arranged in a ring RootsThin, fibrous rootsOne big taproot
Monocots Examples: corn, orchids, grasses, tulips Majority of agricultural plants are monocots
Dicots Examples: roses, maple trees, oak tree, daisies Most plants used in landscaping are dicots
Geraniums and Lobelia This week we will plant Lobelia and Geraniums, both dicots. Lobelia and Geraniums are very popular in landscaping.