Just stick it in the ground!
Well, not quite but almost.
The ground should preferably be wet. I use a round plastic dowel to make a hole in the dirt and snip off a piece of the mother plant and plant it. Within a short time you'll have purslane growing well as it spreads quickly. It's a gorgeous, thick ground cover.
I plant purslane in the ground, some in containers and some in hanging baskets. The bees adore it as much as I do.
I buy several plants each summer season, cut them up and start dozens of new plants. I favor the hot pinks, fuchsias and mixed varieties but buy one of each because together they make quite a show!. One year I bought a white one and the bees created stripes in the blooms with their pollinating soon after.
The purslane blooms have been nicknamed Dolly Partons because they are technically open 9 to 5 (the movie) and my sister calls them Mary Engelbrites since they resemble Mary's cute flowers she draws. This will be my first year to try seeds so I will share information once they start growing.
I plant purslane in the ground, some in containers and some in hanging baskets.
The blooms open in the morning and die in mid afternoon in Phoenix when it's very hot. As fall comes around, the blooms stay open longer. I'm always sad to see them die off when the weather cools off.