I started coleus indoors this year and they are now about 3 inches tall with 3-4 sets of leaves. Since they are shade plants, when do I take them out from under the lights? Or do I just keep them under the lights a few more weeks and harden them off as I do all the others before planting them in a shady place?
I would simply harden off as usual and then plant in a partially shaded area.
Can they be in full sun?
I have a wonderful large coleus that has been summering outdoors all season. With the upcoming fall (I live in southern CT), I realize it cannot stay outside much longer. Can I bring it in and how do I take care of it inside? How do I go about it?
You can certainly bring it indoors for overwintering (treating like a houseplant) but many people simply choose to take cuttings and keep them over winter instead. These articles will help: https://www.gardeningknowhow.com/ornamental/foliage/coleus/overwintering-coleus.htm
https://www.gardeningknowhow.com/ornamental/foliage/coleus/coleus-propagation.htm
I cant bring the coleus in and I was wondering if I could just cover them when it hits 40?
They will not surivive outdoors over winter. You can bring it indoors for overwintering (treating like a houseplant) but many people simply choose to take cuttings and keep them over winter instead. This article will help: https://www.gardeningknowhow.com/ornamental/foliage/coleus/overwintering-coleus.htm
Is it possible to winter coleus for spring planting? I am in zone 5 and winters can be harsh.
This article should help: https://www.gardeningknowhow.com/ornamental/foliage/coleus/overwintering-coleus.htm
How to overwinter coleus.
You can bring coleus indoors for overwintering (treating like a houseplant) but many people simply choose to take cuttings and keep them over winter instead to keep them for planting next season. Here is more information: https://www.gardeningknowhow.com/ornamental/foliage/coleus/coleus-plant-care.htm
https://www.gardeningknowhow.com/ornamental/foliage/coleus/overwintering-coleus.htm
https://www.gardeningknowhow.com/ornamental/foliage/coleus/coleus-propagation.htm
I'm propagating Coleus from cuttings I took from mature plants. I planted the cuttings directly on nursery beds (which is the same method I used for the mother-stock). However, most of the cuttings are drying up. What do I do to save them? Even though it's hot here now, they are constantly watered. Please, what do I do?
Coleus need a lot of humidity, especially during rooting. If you can cover with a thin plastic (plastic food wrap or dry cleaner bag) suspended on sticks so it doesn't touch cuttings and mist twice daily, your cuttings will appreciate it. Do not let this mini greenhouse get direct sun, you don't want cooked coleus. Also, deppending on the temperature, they could be wilting because of the heat.