ornamental horticulture unit: seeds to flowers floral design miss. perry

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  • Ornamental Horticulture Unit: Seeds to Flowers Floral Design Miss. Perry
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  • Seeds General Information Mature, fertilized eggs contained inside fruit Range in size from a few millimeters to a few inches Can be flat, round or cylinder- shaped Distributed by wind, water or animals
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  • Basic Parts of a Seed: Seed embryo complete miniature plant in a resting stage Divided into the epicotyl and hypocotyl Endosperm stored food that contains sugars, proteins, and fats; used during the first stages of development Seed coat tissue that surrounds the embryo and the stored food; protects seed from H 2 O loss and injury
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  • Internal Parts of a Monocot 1.Seed coat 2.Cotyledons 3.Endosperm 4.Hypocotyl 5.Epicotyl 1 2 3 4 5
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  • Internal Parts of a Dicot 1.Seed coat 2.Cotyledons 3.Endosperm 4.Hypocotyl 5.Epicotyl
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  • Germination The process of a seed developing into a plant Requirements: Adequate moisture Oxygen Proper temperature Light
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  • Steps in Germination Process Seed absorbs water Water cracks the seed coat, activating growth Root shoot (hypocotyl) begins to grow downward Stem shoot (epicotyl) begins to grow upward Normal growth continues... Green leaves begin to develop
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  • B U L B S
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  • What is a bulb? An underground stem that contains an embryonic plant inside Will begin to grow when the conditions are right Scales: Modified leaves that overlap each other; gives the bulb a swollen, pear- shaped look; protects the embryo inside
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  • The base of the bulb is called the basal plate. It holds the bulb together and produces roots. Bulbs can live for many years. They will produce new, smaller bulbs from the basal plate.
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  • Buying & Planting Bulbs Look for plump, firm bulbs. A soft, mushy feel is an indication of rot. Dormant bulbs will not have leaves or roots. Dormant period: the time period when plants are not actively growing (growth is slowed down usually during winter) Bulbs should be bought and planted during the dormant period
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  • Where do you buy bulbs? Retail nurseries Mail order catalogs On-line resources
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  • Planting Bulbs Soil bulbs need good drainage (otherwise roots will drown and the bulb itself will rot) Always determine proper planting depth. Different types of bulbs require different depths. Water Most bulbs need water from the moment they begin growing until after they flower
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  • Common Bulbs Tulips Gladiolus Crocus
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  • Common Bulbs Iris Hyacinthus Daffodils
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  • All About... Flowers!
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  • Functions of Flowers Aid in sexual reproduction Contain reproductive parts Attract insects for pollination (bright colors, fragrant scents)
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  • Complete Flowers Made up of 5 parts: 1) Receptacle the enlarged stem tip, to which other flower parts are attached 2) Sepals form an outer circle of leaf- like structures; collectively called the calyx Protect the flower bud
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  • 3) Petals colorful parts of the flower; collectively called the corolla 4) Stamens male parts of the flower Located inside the petals Some secrete sugary nectar Some secrete fragrant compounds Made of the filament and anther
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  • 5) Pistils the female parts of the flower; located in the center of the pollen Made of 3 parts: Stigma sticky surface that captures pollen Style support structure that leads from stigma to ovary Ovary enlarged part where seeds are formed
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  • Receptacle Stamen Pistil Petal Sepal
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  • Incomplete Flowers Missing one or more of the 5 basic flower parts Perfect Flowers (Bisexual) Have both male and female flower organs Imperfect Flowers (Unisexual) Flowers that have either male OR female organs not both
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  • Monecious Plants Plants that bear both male and female flowers (capable of self-pollinization) Dioecious Plants Plants that carry only male OR female flowers (not capable of self-pollinization)


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