When cyclamen plants get leggy, do I cut them back?
Yes, you can trim them back. Keep in mind that leggy plants are normally a sign of insufficient light. You may need to move the plant or provide more light to its location. Here is more infromation on caring for these plants: https://www.gardeningknowhow.com/houseplants/cyclamen/cyclamen-care.htm
Rather than repotting to larger container, can the plant be split since it does seem to be "root bound" but still blooming nicely.
I would probably wait until its blooming has stopped before attempting to divide or repot. When dividing the crown or tuber (with a sharp knife), make sure that each section has some roots/shoots attached and then repot in individual containers. Don't forget to water them thoroughly after repotting.
I have a small cyclamen on my desk in my office. It's only got a handful of leaves, beginnings of a couple new ones and is very small. When it blooms, it only has 2, maybe 3, flowers and that's it. I've had it for about 3 years and did not know about dormancy. I have a lot of windows in my office, so there is indirect sun that comes through. How can I get this plant to become a full, hardy plant with a bunch of leaves and blooms?
This article should help you with that: https://www.gardeningknowhow.com/houseplants/cyclamen/cyclamen-care.htm
What type of light does the cyclamen require?
This article should help you with that: https://www.gardeningknowhow.com/houseplants/cyclamen/cyclamen-care.htm
I received a beautiful pink one for Valentine's Day this year. Within the 2 weeks that I have had it, most all of the leaves have turned yellow and the blooms are gone. I have about 6 good green leaves and what looks like one bloom in the beginning stages. It still is small, very small, and is taller than the leaves. Is my plant beginning to go into the dormant stage or have I killed this plant in only 2 weeks? The soil is moist now, so I have not watered it and the leaves that are still on it look healthy. I have just let them yellow. Leaves just wilt and will pinch them off as they die off. Please help me if you can.
It sounds like it may be a bit too warm. If you place it somewhere a bit cooler, it should stop yellowing. Ideally, they like to be at about 68 F and no warmer.
Can or maybe should a cyclamen plant be taken outside during a South Dakota summer? Would extreme heat or humidty or cooler nights hurt the plant? Or is it best left indoors? Also, how much sun should the plant be exposed to?
Typically, these plants are hardy to Zone 5 and as long as it doesn't get too cold during your summers (below 40-50 degrees F), it should be ok to let them summer outdoors in a warm location. For additional information, this article should help: https://www.gardeningknowhow.com/houseplants/cyclamen/cyclamen-care.htm
I have several cyclamen plants, two of which I have kept for three or four years. In these older two the leaves are green but curling under. I water regularly but do not leave them standing in excess water. I have given them Baby Bio feed and they look healthy apart from this curling. There are one or two new leaves growing which are not curling (yet), but there are signs that the leaves on one of the younger cyclamen plants is also starting to curl. There is no sign of any insect infestation on the leaves. The plants are all kept on a north-facing kitchen window sill and have always thrived there until now. Please can you advise me what I need to do? Thank you.
It sounds like you may have cyclamen mites. This article will help: https://www.gardeningknowhow.com/plant-problems/pests/insects/common-mites-affecting-plants.htm