what causes a poinsetta to give off a foul odor?

Question

I was given four poinsettas, one red, one pink and two white. They give off a horrible odor like a mix between urine and skunk type body odor. Almost like rotten behind. It has permeated my entire home and I had to sit them outside just to get the smell out of my house and now the front porch smells like the south end of a north bound dog.

Answer 1

Disease causes the foul odor.

Several diseases affect production of poinsettia, including foliar diseases such as Botrytis gray mold, powdery mildew, Alternaria blight, Xanthomonas blight, Erwinia blight, Phytophthora blight, and root diseases such as Pythium, Phytophthora and Rhizoctonia root rot. Powdery mildew is a fairly recent disease problem in poinsettia production that can develop explosively late in the crop production cycle. Scab caused by Sphaceloma poinsettiae, normally a disease problem only in states like Florida and Hawaii with subtropical climates, has been introduced nationwide the past couple of seasons with infected rooted cuttings from propagators in Central America. On the other hand, black root rot caused by Thielaviopsis basicola, a soilborne pathogen, was a serious disease of poinsettia in the 1950s and early 60s until the floriculture industry moved to soilless potting mixes. Since the 1920s poinsettias in the industry have exhibited a free-branching morphotype so that cultivars develop multiple branches from a single pinch resulting in many blooms. Recently, a phytoplasma etiology was described that explained the free branching habit

Answer 2

I have never known of poinsettias to give off any odor!!! I use to grow them professionally, hundreds of thousands at a time in a HOT greenhouse, no smell ever came from them. More than likely it is the soil that stinks, especially if you left the plant in the decorative sleeve the usually come in. The water sits in the sleeve and rots the roots of the plant. This goes for any plant contained in a decorative sleeve, take them off, so they can drain the water through the hole in the bottom of the pot.

Answer 3

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Answer 4

This is the time-honored way poinsetta has of getting people to put them outside where they belong and where they want to be.
(Inside our houses smells just as bad to poinsettas!)

Answer 5

its in their nature to giv out foul smells