Poinsettia Production By: Johnny M. Jessup Agriculture Teacher/FFA Advisor.
Post on 14-Jan-2016
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Poinsettia Production
• Many different cultivars grown• Freedom (early)• V14• Marble• Jingle Bells• Gary (late)
Poinsettia Facts
• Brought to the U.S. by J.R. Poinsett, the 1st U.S. ambassador to Mexico.
• Come in a variety of colors including….• Red*• Pink• White• Speckled
Red is the Most Popular
Poinsettia Facts
• The colorful part is actually not the flower.• It is a colorful leaf
called a bract.• The actual flower
is yellow.
Poinsettia Production
• Number of plants per pot depends….• On the pot size.• Whether the plants will be pinched or
grown as single stem.• Size of flower.
Poinsettia Production
• 4” pots• 1 plant for pinched or single stem.
• 6” pots• 2 plants for pinched.• 3 or 4 for single stem.
• 8” pot• 3 or 4 plants for pinched.• 6 or 7 for single stem.
Poinsettia Production
• Temperatures• Should be 65oF at
night.• 70 – 75oF during
the day.• Plants will flower
late or not at all if night temps gets above 80oF.
• *Some cultivars may vary.
Poinsettia Best Practices
• Pinching• Done to increase
the number of bracts on the plant.
• Makes the plant appear fuller by having more flowers per stem.
Poinsettia Best Practices
• Large amounts of fertilizer needed from propagation until sold.• 6 days of water
soluble 20-10-20• Clean water for
rinse on Sunday• Poinsettia top
dressing (15-16-17)
Poinsettia Best Practices
• Pot August 15-20th
• Keep really wet 1st three days (wet floor)
• Tight Spacing• Day 2
• Fungicide Drench ( 1oz to 100 gal)• Repeat every 30 days (stop in November)• Prevents root rot and botrytis.
Poinsettia Best Practices
• Cycocel• Growth regulator• Applied in
September• Drench or spray.• Keeps poinsettias
compact and from stretching.
Poinsettia Best Practices
• Insects• Marathon for white
flies.• (1/3 teaspoon to 6 ½”
pot)
Poinsettia Production
• Poinsettias are a short day photoperiodic plant.
• Bud set light period is from 12 hours to 12 hours and 15 minutes.
• Vegetative growth light period is longer than hours.
• Two hours of light from about 11 p.m. to 1 a.m. each night will cause short day effect.
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