How to fold a palm into a cross from Palm Sunday?

Old palms from Palm Sunday are typically taken to your church and burnt so as to create the ash which is used for the Ash Wednesday service.

"Palm Sunday commemorates the triumphal entry of Jesus into Jerusalem to celebrate the Passover. The gospels record the arrival of Jesus riding into the city on a donkey, while the crowds spread...

Primarily the palms used during palm Sunday come from the European Fan Palm also known as the Mediterranean Fan Palm. These palm leaves were thrown upon Jesus of Nazareth's entrance into the City....

Palm leaves are used on palm sunday.

From the trees just outside Jerusalem. It's called Palm Sunday because this is when the Jews laid palm leaves on the road as Jesus entered Jerusalem....