Moss Rose is very easy to root from cuttings. However, you should assume a failure rate of about 2/3, so take about three times more plants than you require (though you may have much better success than this!).
Moss Roses can be grown from cuttings every year. This means that after the first time you plant Moss Roses, you will not have to buy these plants again, you can simply take cuttings from the plants you are already growing.
DAIZZ’S TIPS:-
How to Propagate Portulaca From Cuttings
Step 1
Cut a 2- to 5-inch piece of portulaca off of the mother plant. Remove just the bottom leaves of the cutting.

Step 2
Prepare the planting bed as you would for seedings and place the cuttings, bare stem down, into the soil. Press firmly around the base of the cutting to make sure it has good contact with the soil.

Step 3
Water well and then don’t water again until the top 2 inches of soil are dry.

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