Poinsettias at AHS

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Poinsettias at AHS
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• Introduced from Mexico by J.R. Poinsett the first
  
• amabassador to Mexico

• Poinsettia flower is a small yellow flower grown
  at
• terminal end-the bract (modified leaf) provides
  the
• color

• Poinsettias are a short-day plant-meaning they
• require less then 12 hours of day length to
  produce
• flowers and color

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• Poinsettia Management
• Maintain cooler night time temperatures. Ideal
  day
• temp is 75 and ideal night temp is 64 thru
• mid-October-after that 70 F day and 62 night
• were simulating their native environment

• Fertilizer every third watering with a 17-5-24
  at
• 200 ppm

• Water from below-branches are fragile!!!

• Maintain an approximate 12 inch spacing to allow
• for growth and ventilation

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• Pest Control Strategies
• Maintain optimum environment-water, temp,
  fertilizer
• Whitefly/Thrips a systemic insecticide
• Biocontrols-predatory wasps
• Yellow sticky traps Bean plants as indicator

• Fungicide drenches may be needed to prevent
• powdery mildew and pythium root rot