Greenhouse Management

Objective: Understand greenhouse structures, production and maintenance.

What’s the point of a Greenhouse?

What’s the point of a Greenhouse?

1. The “Greenhouse Effect”-collects and stores heat from the sun (radiant heat)

2. Provides a protective environment to grow plants

3. Many detached houses can be used as connected houses

Greenhouse Structures

Detached Houses Quonset

Lean to

Even span

Uneven span

Detached HousesAdvantages

Easy to program and maintain temperature

Easy to ventilate without exposing the plants to blasts of cold air

Disadvantages

Requires more energy to heat and cool

Higher initial cost

Detached Houses Draw an image and write a brief description of each type of detached house

Greenhouse How To BookChapter 1- Choosing The Right Structure

Page 1-Detached Housing Options

Connected Houses

Ridge and furrow

Barrel vault

Dutch-Venlo

Saran-covered

Connected Houses

Advantages

Requires less land area

Less construction materials

Heat loss is less

Disadvantages

Snow build-up in connecting gutters

Gutters shade parts of the greenhouse

Connected Houses

Draw an image and write a brief description of each type of connected house

Greenhouse How To BookChapter 1- Choosing The Right Structure

Page 2-Connected Housing Options

Greenhouse Equipment &

Controls

Greenhouse Equipment &

Controls 1. Heaters- gas or electric

2. Thermostats- controls the temperature, should be at plant level

3. Timers-for lights, shade cloth, irrigation, etc.

4. Evaporative cooling systems1. Most effective method for cooling a

greenhouse

2. Constructed of thick corrugated cardboard

3. Reduces watering due to higher humidity created by evaporation from the dripping water in the cool pad

Greenhouse Equipment &

Controls5. Exhaust fans- pulls hot air from the greenhouse

6. Vents- located at the opposite end from the exhaust fan. Vents open to allow fresh air in the greenhouse.

7. Circulation fans- circulates air in the greenhouse even when the exhaust fan is not running. Provides a uniform temperature throughout the greenhouse.

8. Misting system- cools the greenhouse and provides a fine mist for seeds and cuttings.

Greenhouse Equipment &

Controls 9. Overhead irrigation system- waters greenhouse or shadehouses but may not give the deep watering some plants need.

10.Drip irrigation- tubes with emitters go to individual pots for water. A very efficient way to water.

11.Lights- provide additional lighting for plants

Greenhouse Equipment &

Controls Draw an image of the environmental controls used in the KHS Greenhouse

Greenhouse How To BookChapter 2- Greenhouse Equipment & Controls

Page 3-Environmental Controls in the KHS Greenhouse

Greenhouse Coverings

1. Greenhouse film(polyethylene film)

3-6 mil thick

UV treated

Inexpensive

Long lasting

Easy to replace

2. Acrylic panels Energy efficient

Impact resistant

Available in a variety of widths and lengths

3. Polycarbonate panels

Twin wall panels

Corrugated panels

Available in a variety of widths and lengths

Relatively expensive

4. Solexx panels Flexible

Twin wall

3-6 mil thick

Opaque

Relatively expensive

Greenhouse Coverings

Greenhouse How To Book Chapter 3-Choosing the Right Greenhouse Covering

In this chapter include a graphic and description of each type of greenhouse covering

Greenhouse Plant Terminology

Greenhouse Plant Terminology

Annual

Biennial

Perennial

Sow

Direct sowing

Indirect sowing

Media

Deadheading

Pinch

Full sun

Part shade

Shade

Bedding Plant Soils/Media

Bedding Plant Soils/Media

1. Vermiculite

2. Perlite

3. Peat moss

4. Sand

5. Bark

6. Commercially prepared mix

Bedding Plant Soils/Media

Greenhouse How To Book Chapter 4-Choosing the Right Soil/Media

In this chapter include a graphic and description of each type of bedding plant soil/media

Containers

Containers1. Flat

2. Cell pack

3. Peat pots

4. Eco pots

5. Jiffy 7

6. Plastic pots

7. Clay pots

8. Hanging baskets

ContainersGreenhouse How To Book

Chapter 5-Choosing the Right ContainerIn this chapter include a graphic and description of each type of container

In your description include the pros & cons of each container

Seed Production

Seed Production

1• Preparing for

Seeds

2• Sow Seeds

3• Germination

Seed ProductionGreenhouse How To Book

Chapter 6-How to Plant Seeds List the key steps involved in seed production

Classify the steps into 3 categories: Preparing for Seeds, Sowing Seeds, Germination

Cutting Production

Cutting Production

Plants easy to propagate by cuttingsIvy

Pothos

Wandering Jew

How to properly take cuttings (stem)

Cutting Production

Greenhouse How To Book Chapter 7-How to Take Cuttings

List plants easy to propagate from cuttings

List the key steps involved in taking cuttings

Bedding Plant Problems

Bedding Plant Problems

1. Cultural Disorders

2. Diseases

3. Pests

Bedding Plant Problems 1. Cultural Disorders Seed

germination problems

Fertilization problems

Uneven growth problems

Tall & spindly growth problems

Causes &

Solutions

Bedding Plant Problems

2. DiseasesSolutionsUse sterilized soil

Use fungicides

Improve air circulation

Increase air temperature around plant

Damping off- seedlings fall over causing the stem to rot

Botrytis- lower leaves are brown, rotting and drying out

Bedding Plant Problems 3. PestsPlants or seedlings missing caused by slugs,

snails, or roaches

Holes in the leaves, damaged leaves or missing plant parts

Aphids

Spider mites

Scale

Thrip

Whiteflies

Fungus gnats

Leaf miner

Cutworms

Slugs

Caterpillars

Identifying features?Control

methods?

Bedding Plant Problems

Greenhouse How To Book Chapter 8-How to Address Bedding Plant Problems

List the 4 key Cultural Disorders and the CAUSES & SOLUTIONS for each

Describe 2 Diseases associated with Bedding Plants. Give a picture for each. Describe a solution for diseases.

For each Pest give a description of identifying features. Give control method specific to each pest. Provide a picture for at least 3 of the Pests.

Greenhouse Maintenance

Greenhouse Maintenance

Structure1.

Painting2.

Flooring 3. Doors

Replace Covering1. Glass cracked

2. Fiberglass

3. Torn/damag

ed film

Equipment Repair

1. Heater2.

Ventilation3.

Irrigation4. Lighting

Pest Control

1. Weeds 2. Insects

3. Diseases

Plant Maintenance