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Indoor Gardening. There’s no such thing as a houseplant. Environment:. Heat Tropicals like 70-80 day, 60-68 night Flowering plants: cooler nights- 55-60 DIF Light Water Soil. Light Footcandles Sunny- 4,000- 8,000 Partial Shade- 1,000- 3,000 Shady 50- 500 .
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Indoor Gardening There’s no such thing as a houseplant.
Environment: • Heat • Tropicals like 70-80 day, 60-68 night • Flowering plants: cooler nights- 55-60 • DIF • Light • Water • Soil
LightFootcandles Sunny- 4,000- 8,000 Partial Shade- 1,000- 3,000 Shady 50- 500
Light during production Sun leaves small, thick Chloroplasts vertical Shade leaves larger, thinner Chloroplasts horizontal Mature leaves don’t change size, internal structure.
Light Compensation PointMinimum light level where food produced by photosynthesis equals food consumed through respiration.Do you want growth, or not?
To increase light:Open curtains, wash windows, remove screens White walls Mylar, mirrors Artificial light
Artificial Lights • Fluorescent cool whites for blue end of spectrum • Incandescent for red end of spectrum or • Special plant growth lamps- complete spectrum
HID Lighting High intensity discharge lamps Expensive, but efficient Commercial growers, serious hobbiests, basement cash crops
Environment: • Heat • Light • Water Too much, too little Tools of the trade • Soil
Tools of the trade: Good watering can Saucers Pebble tray Mister
Environment: • Heat • Light • Water • “Soil” Suited to type of plant Cornell Mix Cactus mix Epiphyte mix
Containers Plastic revolutionized green industry • Clay dries faster • Clay lasts longer • Plastic retains water • Plastic cheaper
Repotting 1. Do you want plant to grow larger? 2. Are roots coming out drain hole? 3. What time of year? Will stimulate growth 4. What size pot needed?
Terrariums • Miniature greenhouses • High humidity • Charcoal, gravel in bottom • Prune to keep attractive • Can add fauna
Aphids Usually female, born pregnant Farmed by ants Suck sap, secrete honeydew Easily removed by soap & water spray Aphid mummies
Mealy bugs Crawlers settle down Suck sap Sooty mildew Wash off with soap and water Cryptolameus
Scale insects Crawlers settle down, grow protective shell suck juices. Hard to tell dead scale from live one. Kill with insecticidal soap Scrape off scale
Spider mites Practically invisible Suck sap Leave stippled “Paprika” when shake over white paper
Spider Mites Like dry conditions Wash off with spray of water/ buttermilk Actually not an insect pest
Foolproof flora:Aglaonaema (Chinese Evergreen)Aspidistra (Cast Iron Plant)Sansiviera (Snake Plant)BromelliadsDracaenaPhilodendron sp.
Chinese Evergreen • Warm temperatures • Low light • Evenly moist • Blooms & berries • Many varieties • Grow from divisions or root cuttings
Cast Iron Plant • Hardy outdoors in deep South • Tolerates very low light • Favorite of Victorians • Slow growing • Hard to find commerciallyl
Snake Plants • Tolerates sun, shade, hot, cold, wet, dry • Fragrant blooms when grown well • Grow from divisions or cuttings • Many varieties
Snake Plant • Care in taking cuttings from variegated leaves • Frequently used in dish gardens, terrariums • Related to hemp • Cactus soil best. (Concrete might work)
Bromelliads • Large family- related to pineapple • Epiphytes • Tolerate low light, low humidity • Many species: • Aechmea • Neoregelia • Tillandsia, etc.
Dracaenas • Tropicals - like warm temperatures • Bright light, no direct sun • D. fragrans (Corn plant)
Dracaenas • Canes develop as plants mature. Drops lower leaves • Propagate canes to get various heights Dracaena marginata Dragon plant Tendency to get mites
Heartleaf philodendron • Vine- grow in hanging basket or on bark • Low light • Can grow in water only • Aerial roots- easy to propagate
Other Commonly Grown Houseplants 250 varieties produced commercially. So many plants- so little time.
Swedish Ivy • Mint family • Aerial roots- propagates easily • Does best in bright light • Variegated varieties available • Closely related Iboza- fragrant
Wandering Jew • Tradescantia- large genus • Best color in bright light • Aerial roots- propagates easily • Nice mixed with shade annuals for summer basket
Cactus & succulents • Sun essential, but little care • Killed most often by overwatering • Repotting a pain (literally) • Cactus mix • Water, then let dry
Baby toes • Fennestraria sp. = window plant Stem buried to protect from sunlight • Drench soil, then let dry thoroughly • Maximum sunlight, especially for blooms
Gesneriads • Large genus • African violet = Saintpaulia • Warm, moist conditions • Thrives under fluorescent lights • Propagates easily
Episcia • Also prefer warmth, moist conditions • Trailers • Forms rosettes along stems that are easily propagated • Spectacular foliage, bright flowers
Asparagus fern • Asparagus springeri • Best growth in sun Tolerates shade • Red berries • Planted from seeds or tubers • Used extensively by florists • Messy
Ferns • Adiantum sp. • Difficult outside of greenhouse • Needs high humidity • Cool conditions • Many species native to U.S.
Boston fern • Nephrolepsis exaltata “Bostoniensis” • Sport 1890’s grew faster, droopier fronds • High humidity • Evenly moist soil
Coleus • Another mint • Better light, better color • Propagate from seed, cuttings • Many cultivars • Great bedding plant outdoors
Polka dot plant • Hypoestes phyllostachya • Bright light for best color • Can grow to 3 ft, but look `”leggy” • Pinch back for best form • Good outdoor bedding plant
Dishgardens • Common gifts • Plants may not have compatible growth requirements • Eventually must separate