Poinsettia History & Industry
This U.S. ambassador introduced poinsettias to the United States in 1825.
Who is Joel Robert’s Poinsett?
Poinsettia greenhouse temperatures should always remain above this temperature.
What is 60 degrees?
This soil-borne pathogen commonly occurs when poinsettias experience overly wet conditions.
What is Pythium?
Poinsettias are classified as this type of photoperiodic plant.
What is a short-day plant?
These fast-turnover crops typically mature within 6–12 weeks.
What are bedding plants?
This family pioneered the poinsettia industry in Southern California during the 1920s.
Who are the Ecke family?
LA Tech grows approximately this many poinsettias each year.
What is 4,500?
This insect is one of the most serious poinsettia greenhouse pests and is commonly treated with imidacloprid.
What is the whitefly?
Blackout treatment for 8-week poinsettias typically begins on this date.
When is October 1st?
This warm-weather flower requires at least 70°F night temperatures for optimal rooting.
What is Vinca?
Poinsettias are native to this region.
What is southern Mexico?
This cultural practice makes poinsettias bushier by encouraging branching.
What is pinching?
These mites thrive under warm, dry greenhouse conditions and display two dark abdominal spots.
What are two-spotted spider mites?
Providing supplemental lighting beginning on this date delays poinsettia flowering.
what is September 1st?
This bedding crop is especially prone to powdery mildew.
What are Zinnias?
The Aztecs used poinsettias to produce this useful material for textiles and cosmetics.
What is dye?
Poinsettia trees are typically planted during this part of the year.
What is mid-April?
Female western flower thrips can lay approximately this many eggs during their lifespan.
What is 150-250 eggs?
This seasonal event occurs on September 22 and signals shortening day length.
What is the fall equinox?
This cool-season crop performs best at a pH of 5.6–6.0.
What are Pansies?
Modern poinsettia breeding accelerated during this decade, producing improved colors and longevity.
What are the 1950’s?
This nutrient deficiency in poinsettias is commonly prevented using an Epsom salt drench.
What is a magnesium deficiency?
This fungal disease is commonly called gray mold.
What is botrytis?
Without photoperiod manipulation, poinsettias would naturally reach full red color around this time.
What is early November?
These tropical holiday plants require 8 weeks of short-day treatment to bloom for Christmas.
What are Christmas cactus?