How and when do i plant sweet peas in Louisiana

My grandfather would take wire fencing and the sweetpeas would climb and intertwine into a GEOURGEOUS display of many colors!! Will buy and soak sweet peas seeds soon. I live in Metairie, Louisiana, a suburb of New Orleans. My grandpa had the Most beautiful sweetpea display in his neighborhood!! Thank you sooooo much! Flowers are one of God's gifts to us.

This New Orleans,Louisiana will "run" to the nearest garden center to purchase sweetpea seeds. Rainy,rainy here every afternoon and very,very HOT! My grandpa would use his wire fence to "train" the flowers. He was the ENVY of the neighborhood! Thank you soooo much,Dawling( New Orleans talk). See ya in the GUMBO!