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Poinsettias

Poinsettias. Mr. Burton Greenhouse Management. History. Aztec plant Introduced into the U. S. from Mexico by JR Poinsett. History. Albert Ecke began growing them from cuttings in the 1900’s Ecke Poinsettia Ranch in Calf. Is one of the most prominent growers in the U. S. The Flower.

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Poinsettias

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  1. Poinsettias Mr. Burton Greenhouse Management

  2. History • Aztec plant • Introduced into the U. S. from Mexico by JR Poinsett

  3. History • Albert Ecke began growing them from cuttings in the 1900’s • Ecke Poinsettia Ranch in Calf. Is one of the most prominent growers in the U. S.

  4. The Flower • Small • Yellow

  5. Bracts • Leaves that give poinsettias their color • The common color is red • Short days are required for flower production which causes the bracts to turn colors • The flower buds will occur naturally in late September and early October

  6. Propagation • Stock plant-- Parent plant • Cuttings are taken from a stock plant

  7. Propagation • Rooted cuttings • Arrive in a wedge-shaped oasis cube • Calloused cuttings • Take more time to root • All cuttings are patented plants

  8. Temperature • 65-70 degrees at night • 70-75 degrees during the day

  9. Finishing Poinsettias • Good ventilation and air circulation • 75-80 degrees day time temp • 64-66 degrees night time temp

  10. Pinching • Removes the the terminal end of the plant • On small plants for of five leaves should remain • Increases the number of bracts per plant • Causes the plants to be fuller

  11. Fertilizer • 20-10-20 • Soluble 200 to 250 ppm

  12. Growth Regulators • Developed to produce a better quality plant • Control height • Darkens the color of the bracts • Cycocel is a drench • B-nine is a spray

  13. Insects • Whiteflies • Mealybugs • Spider mites • Fungus gnats • Best way to prevent is to have a clean greenhouse

  14. Diseases • Root rot • Use a clean growing media • Have proper growing conditions • Use a fungicide

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