Poinsettia

Question 1

What is the botanical name of the Poinsettia?

Answer 1

Euphorbis pulcherrima

Question 2

To ensure Poinsettia flower as long as possible, list the requirements.

Answer 2

Buy from reputable source - should not be stood outside/in an icy shop area

keep in a well-lit position
No draughts
Warm, not too hot

water well, then not again until compost is almost dry

Mist leaves frequently

Question 3

Describe the Poinsettia’s maintenance and care.

Answer 3

Day temp; 18-24’c
Deadhead during flowering period
Look out for pests

no draughts, not close to windows - more draughts!

Maintain moist compost.

Question 4

what pests/diseases attack Poinsettia’s?

Answer 4

white fly
fungus gnats

Question 5

how do white fly attack Poinsettia?

Answer 5

The insects suck sap out the plant, and disfigure them.

they secrete a sticky honeydew, which becomes a site for sooty moulds - therefore reduces rate of photosynthesis.

Question 6

what do fungus gnats do to Poinsettia’s and how are they controlled?

Answer 6

they infect the compost
can be seen crawling around tables etc where the plants are displayed.

Control with insecticide drenches into the compost.