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Does anyone know how to make a poinsettia turn red for Xmas?

10 replies

AYearOfCushions · 01/09/2022 10:07

I love a poinsettia at Christmas but they always seem to die off. My last one is growing beautifully but as you can see it's very green.

Is there a method to make it turn red I can do at home? I've read conflicting advice. Some say bright sunlight which this plant has had all summer and some say darkness?

Does anyone know how to make a poinsettia turn red for Xmas?
OP posts:
CatherinedeBourgh · 01/09/2022 10:56

It's to do with the specific pattern of light and darkness, I can't remember the number of hours exactly but they need a set number of hours of light and darkness each day.

Allthegoodnamesarechosen · 01/09/2022 10:58

Has it any flower buds? Because it is the bracts surrounding them that are red (or pink or white depending on the cultivar).

pandora206 · 01/09/2022 11:31

I tried to do this last year and failed. I kept the plant in the dark for 12 hours per day plus from September onwards, having reduced watering at the end of the summer. Unfortunately, there were days when I forgot to put it in the cupboard so I wasn't as consistent as I could have been, and it remained green. In the end I decided it was easier to compost it and buy a new one in December!

JesusMaryAndJosephAndTheWeeDon · 01/09/2022 12:25

Swap it for a Christmas Cactus, much easier to look after and they bloom reliably every year (in fact my Mum's is ancient, nearly as old as me).

Tried to keep a poinsettia alive for years without success but the Christmas Cactus is fab.

W00p · 01/09/2022 12:30

Spray paint.

No idea but I love Poinsettias too!

Billybagpuss · 01/09/2022 12:35

I’m trying the same thing for the first time, I have a box and I’m going to be going in it for 14 hours overnight from next weekend.

AYearOfCushions · 01/09/2022 13:08

Sounds like a time consuming process.

No flower buds that I can see. I'm very surprised it's lasted this long but its done well on the kitchen windowsill and doubled in height.

I'll give it a go I think, 14 hours in the dark and the rest in sunlight?

If it fails I can always stick a bit of tinsel on it!

OP posts:
CatherinedeBourgh · 01/09/2022 13:31

If you have a grow light, you could stick it in a cupboard on a timer, that would save on time.

You'd just have to make sure you watered it regularly enough.

Not sure why they need so much faff, tbh, when I lived in South America they flowered outside all over the place, and days were never that short!

deplorabelle · 01/09/2022 13:38

Grow light is definitely the best idea. They need about 12 hours of dark followed by 12 hours of good light for several weeks. Often a winter windowsill just won't be bright enough light to make it flower.

I did it successfully but the plant seemed to get exhausted after its second flowering, got yellow leaves and died despite my attempts to revive it. I don't know why.

MereDintofPandiculation · 02/09/2022 15:07

I had mine on a S window in a boxroom used for storage. I just made sure never to go into the boxroom after dark. Worked very easily

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