Outdoor Poinsettias Still Have Red Leaf Bracts?

Here on the Portuguese Algarve there are several poinsettia trees growing in gardens which now, in November, have the red leaf bracts we expect on our indoor plants. I have tried growing on a plant from a few years ago; it is now in a very large (unmovable) pot so I cannot move it to a dark place when specified. How come, therefore, the trees which are outdoors all year still turn red?

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poehere
Bronze Post Medal for All Time! 105 Posts

October 4, 20170 found this helpful

They are in an area in the yard that receives total darkness at least 14 hours a day.

You will need to find a way to give your plant total darkness.
You can try to surround the plant with a black tarp or black plastic sheet.
Do not cover the plant just put this around the plant and on top.
You can build a frame and put the plastic on the frame. At night sit this over the top of your plant.
They need total darkness in order to trun red.

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