Thanks for your question.  In order to provide the most accurate information, it would be extremely helpful to me to receive some pictures of the plant.

Specifically:

(1). One of the entire plant including the pot;

(2).  Two closeup pictures of leaves.  One picture should be of a leaf that appears distressed and one picture of a leaf that appears normal to you.

Finally, could you be more specific as to why you think you "killed" the plant?

Looking forward to receiving pictures and further information from you.

Thank you.

Hi and thanks for the pictures.  Just for my clarification, it seems as if you now have only cuttings from the original plant.  Moreover it would appear as if these cuttings are now in containers of water. You want to try and have these cuttings develop roots so that you can grow whole plants from them. Correct?  If all of this is true, just one more picture request.  I would like to see a few close up pictures of the ends of these cuttings.  That is, the ends that represent where you cut them off of the original plant.  Successfully growing plants from cuttings is very dependent upon the how you made the cuttings.  I assume that the ends of the cuttings that are now in water represent these cut ends.  Take a couple of pics of these ends.  Thanks for your patience with this but I want to give you the very best advice that I can.
 

Thanks for your question and responses.

Propagating plants from cuttings is a combination of luck and good procedures. Although I have never attempted doing this with passion plants, I have had success with many other plants. Here are some general guidelines:

1). Cuttings can either be placed in dirt or in water in order for roots to develop. I much prefer water. In my experience cuttings put into dirt seem to be more prone to rotting than cuttings put into water. Also in water you can see roots developing whereas you cannot see this when the cuttings are in dirt. Moreover, cuttings propagated in soil often need first to be dipped into rooting hormone. Unfortunately some cuttings respond to this hormone while other cuttings may die from it. I never use rooting hormone for my cuttings placed in water and to a great extent have not encountered any problems.

2). The most important step in making cuttings is how they are cut from the original plant. This is why I wanted to see what the cut ends of your cuttings looked like. The key feature is to identify the part of the plant stem where nodes are present. Nodes are the parts of the stem at which leaves are attached. This node area is the only part of most plants from which roots can develop. You should try and cut the actual stem JUST BELOW a node so that the node is at the end of the cutting you put into water. Be sure to first remove any leaves from this node. You do not want any leaves to be submerged in the water as this will cause fungal growth in the water. If you are able to include two nodes in a single cutting, so much the better.

3). It is extremely important that you replace the water in which the cuttings are placed on a daily basis. When replacing the water also wash off the cut ends of the cuttings. All of this is necessary to prevent the rotting of the cutting.

4). Do not add any fertilizer to the water. The water in Ramsey County may be somewhat alkaline so, hopefully, you have access to water from a water softener. Also the water you use should be previously boiled and then cooled. This boiling will usually destroy any chorine and/or fluoride that may be initially in the water.

5). Place the cuttings in a location where they are exposed to some direct sunlight for a couple of hours and indirect sunlight for the rest of the time. On top of a radiator or heating pad would be a great location.

6). Do not expect immediate results but look at the cuttings on a daily basis. For most plants after two or three weeks in the water, small white roots should be seen growing from the node area. When this happens, just continue to wait. Eventually you will want to transplant these cuttings into pots with soil. But don’t do this until you can see at least 8 or more roots growing from the node. If you can get root development from 75% of your cuttings, you will have been highly successful.

The following should give you further information on these and related points:

https://www.passionflow.co.uk/cuttings/

https://www.bhg.com/gardening/yard/garden-care/starting-flowers-from-cutting/

https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/visual-guides/rooting-cuttings-in-water

https://www.youtube.com/watch?v=TLCiB1vQnyQ

https://candide.com/IE/stories/9b828568-5caa-4b56-83b4-b6fe3cf3ca7b

https://www.youtube.com/watch?v=ghiV96T8EEk

Good luck and by all means get back to us with any additional questions you might have.

Great news.  Just keep changing the water daily.  When you get to the point where you will be transplanting things, use fresh potting soil.  Keep us apprised of things and ask away with any further questions.  Thanks for using our forum.