I have nicotiana plants. How do I cut them back for winter? When is the best time to do this? The plants are about 3 ft tall. I live near Chicago. Thank you!
Most Nicotiana plants are sold and grown as an annual. With proper care and dead heading they should continue to bloom through fall.
You can then remove from the garden.
You can try to cut them back and mulch lightly. There is a few varieties that are considered a tender perennial and could come back next spring.
https://www.gardeningknowhow.com/ornamental/flowers/nicotiana/growing-nicotiana.htm
Can a nicotiana plant be planted in the soil and mulched really well and will it survive the winter in Arkansas?
There are many species of Nicotiana with different growing requirements, so it's best if you know the name of your speices and can look up its winter hardiness. If you don't know the name, you can always try an experiment, mulch it and cover it well, and see if it survives. Also, it may produce seeds and re-seed itself for next year.
https://www.gardeningknowhow.com/ornamental/flowers/nicotiana/growing-nicotiana.htm
Dear Sir/Madam I wonder something if I can sow Nicotiana Alata seeds in the Autumn(as October) for flowering in early spring? I want to plant them indoors and keep them on my window balcony until early spring. Best Regards
If they get enough light they should do fine. The winter sun is not as strong and your plants may get leggy. You might consider adding supplemental lighting. Here is more on their care:
https://www.gardeningknowhow.com/ornamental/flowers/nicotiana/growing-nicotiana.htm