l like the red leaves. I also tried to find out why it turns green, like you mentioned. so I googled it, but they said the is red when purchased, turns green later. not sure we're talking about your plant, but you might like to read the following.
As per google:
What you are referring to is called Virginia Creeper, a five-leafed version of the poison ivy, though it is usually not worrisome with regards to rashes like poison ivy except for overly sensitive people that may come into contact with its sap. The vine produces berries, however, which are extremely toxic and can even be fatal if ingested. For more information on this plant, this article should help: https://plants.usda.gov/plantguide/pdf/pg_paqu2.pdf
@brunihttp://namethatplant.net/plantdetail.shtml?plant=1031 The vines around my property have yet to produce any blooms or berries, at least none that I have seen. The new growth appears red as you can see. They also turn red in the fall. I come into contact with it all the time and it has never bothered my skin. However, the poison oak that grows around here will break me out. This plant is a native and is documented growing wild all over the Carolinas and Georgia. This is what my 365 Project is mainly for - to document my surroundings with photos of the wild plants where I live in South Carolina and dig deep with research into what they are, whether or not they are native or whether or not they're invasive, etc. Virginia Creeper grows wild all over my property - front yard and back - and throughout the midlands of South Carolina. There is no getting away from it. I live out in the country. It's very rural and a far cry from any urban setting.
As per google:
What you are referring to is called Virginia Creeper, a five-leafed version of the poison ivy, though it is usually not worrisome with regards to rashes like poison ivy except for overly sensitive people that may come into contact with its sap. The vine produces berries, however, which are extremely toxic and can even be fatal if ingested. For more information on this plant, this article should help: https://plants.usda.gov/plantguide/pdf/pg_paqu2.pdf