Q.Weeping Cherry tree and wisteria tree
The weeping cherry showed that it could be planted in wet soil. It never gave any other information that I could find. Also, do wisteria trees grow in a wet areas? Do not want a hedge between our neighbor.
Well draining soil is very important for the health of a Weeping Cherry Tree.
Root rot will likely kill this tree if it is planted in wet, poor draining soil.
https://www.gardeningknowhow.com/ornamental/trees/weeping-cherry/weeping-cherry-growing-tips.htm
Wisteria can take a more damp soil condition, but standing water or poorly draining soil would also not be recommended.
https://www.gardeningknowhow.com/ornamental/vines/wisteria/growing-wisteria-proper-wisteria-vine-care.htm
Addressing drainage issues or amending the soil may be the best step in preparing this area for landscaping.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/yard-drainage-problems.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/improving-garden-soil.htm
https://www.gardeningknowhow.com/ornamental/water-plants/wgen/water-tolerant-plants.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/wet-soil-trees.htm