Q.Split leaf Philodendron issue
I have a mature split leaf Philodendron that has been broken off at ground level. It has a trunk of about 24 inches long with a healthy leaf and three or four large pods ready to open into leaves at the top. If I replant it as is, will it regrow roots and survive?

You'll probably have better luck regrowing new roots if you don't plant the whole thing. Cut it off 12 - 18" below the leaves, and bury the piece back into the soil. This article tells you more (I know the article is about "monstera," but the names are pretty much interchangeable, although technically they are 2 different species): https://www.gardeningknowhow.com/houseplants/swiss-cheese-plant/monstera-deliciosa-propagation.htm