Houseplants

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Houseplants

• Ron Smith, Ph.D.
• Extension Horticulturist Turfgrass Specialist

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Light is Life
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Measurement of Light

• 1 Footcandle (fc)
• Amount of visible light that falls on 1 sq. ft.
  of surface 1 ft. away from one candle.
• 1 Lumen
• Amount of light from one candle.

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Footcandle1 Lumen of light per sq. ft. of area
1'
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3 Major Plant Processes

• Photosynthesis
• Phototropism
• Photoperiodism

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3 Components of Light

• Intensity
• Duration
• Quality

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Chlorophyll
Photosynthesis
Light
Water Vapor
O2
CO2
Water
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Photosynthesis
Chlorophyll

• 6CO2 6H2O C6H12O6 6O2

Carbon Dioxide
Oxygen
Water
Glucose
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Light Quality

• Blue/Violet
• Promote foliage growth
• Yellow/Green
• No effect
• Red/Far-Red
• Encourage flowering, elongation, expansion

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Recommended Lighting-Levels

• 12 Hours Light Period/Day
• Minimum Recommended
• Low 50 f.c. 75-100 f.c.
• Medium 75-100 f.c. 200() f.c.
• High 200 f.c. 500 f.c.
• Very High 500 f.c. 1000 f.c.

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3 Types of Artificial Light

• Filament-Incandescent
• tungsten halogen
• Excited Phosphorus
• fluorescent
• High-Intensity-Discharge (HID)
• mercury, metal halide, high pressure sodium, low
  pressure sodium

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Ron Betsey Showering With Their Plants
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Chinese EvergreenAglaonema
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AloeAloe vera
http//ww4.bhg.com
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Norfolk PineAraucaria heterophylla
http//ww4.bhg.com
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Umbrella TreeBrassaia
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CaladiumCaladium
http//www.betterphoto.com/gallery/dynoGall2.asp?c
atID281
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CrotonCodiaeum variegatum
http//ww4.bhg.com
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Corn PlantDracaena fragrans 'massangeana'
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Persian VioletExacum affine
http//ww4.bhg.com
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Rubber PlantFicus elastica
http//ww4.bhg.com
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HydrangeaHydrangea macrophylla
http//ww4.bhg.com
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Prayer PlantMaranta
http//ww4.bhg.com
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Paper-white NarcissusNarcissus tazetta
http//ww4.bhg.com
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Boston FernsNephrolepis exaltata 'Bostoniensis'
http//ww4.bhg.com
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Swedish IvyPlectranthus
http//ww4.bhg.com
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Mother-in-Law Tongue Sansevieria
http//ww4.bhg.com
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GloxiniaSinningia speciosa
http//ww4.bhg.com
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Wandering JewTradescantia or Zebrina
http//ww4.bhg.com
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Plant Cluster
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Plants in the Home
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Dumb CaneSunburn
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African VioletSunburn
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Greenhouse Geranium Botrytis
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ScheffleraGhost Ring Virus
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Geranium Virus
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Variegated Spider Plant Fluoride Tip Burn
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Layering
Development of roots on a stem while still
attached to the parent plant.
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Beneficial Houseplants
Spider Plant Chlorophytum comosum
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Beneficial Houseplants
Dumb Cane Dieffenbachia
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Beneficial Houseplants
Dracaena Dracaena fragrans
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Beneficial Houseplants
Weeping Fig Ficus benjamina
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Beneficial Houseplants
Rubber Plant Ficus elastica
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Beneficial Houseplants
English Ivy Hedera helix
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Beneficial Houseplants
Queen of Hearts Homalomena wallisii
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Beneficial Houseplants
Schefflera Schefflera arboricola
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Beneficial Houseplants
Peace Lily Spathiphyllum wallisii
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Low Light Houseplants
Cast-Iron Plant Aspidistra elatior
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Low Light Houseplants
Mock Strawberry Duchesnea indica
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Low Light Houseplants
Sliver Net Leaf Fittonia
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Low Light Houseplants
Tree Philodendron Philodendron bipinnatifidum
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Low Light Houseplants
Heart Leaf, Sweetheart Plant Philodendron
scandens
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Low Light Houseplants
Schefflera Schefflera arboricola
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Low Light Houseplants
Baby Tears Soleirolia soleirolii
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Low Light Houseplants
Piggyback Plant Tolmiea menziesii
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Poisonous Plants

• Amaryllis - Hippeastrum puniceum (Barbados-Lily
  and other species)
• Belladonna Lily - Amaryllis belladonna
  (Naked-Lady, Pink-Lady, Resurrection-Lily)
• Boxwood Buxus microphylla sempervirens (Box,
  Boxtree and other species)
• Buttercups Ranunculus sp.
• Caladium Caladium bicolor and other species
• Castorbean Ricinus communis (Castor-Oil Plant,
  Palma Cristi)

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Poisonous Plants

• Daffodil Narcissus pseudonarcissus (Trumpet
  Narcissus)
• Dumbcanes Dieffenbachia sp.
• Bracken Fern Pteridium aquilinum (Brake Fern
  and other species)
• Four O Clock Miracilis jalapa (Marvel-of-Peru,
  Beauty-of-the-Night, and other species)
• Hollies Ilex sp.
• Garden Hyacinth Hyacinthus orientalis
• Hydrangeas Hydrangea sp.

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Poisonous Plants

• Irises Iris sp. (Flags, Fleur-De-Lis)
• English Ivy Hedera helix and other species
• Jerusalem-Cherry Solanum pseudocapsicum
• Lantanas Lantana sp.
• Mistletoes Phoradendron sp.
• Narcissus Narcissus tazetta (Polyanthus
  Narcissus, Jonquil, and other species)
• Orleander Nerium oleander

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Poisonous Plants

• Philodendrons Philodendron sp.
• Poinsettia Euphorbia pulcherrima (Common
  Poinsettia, Christmas Flower)
• Japanese Privet Ligustrum japonicum (Waxleaf
  Privet other species)
• Rhododendrons, Azaleas Rhododendron sp.

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Designed by Jeanne Andrea
Supervised by Ron