Moss rose will keep blooming all season long with no additional care needed. However, the plants do produce large amounts of seed, so you may see volunteers coming back each year if you plant them once.

Do moss roses grow back every year?

Moss roses are annual flowers, but they self-sow readily and may come up year after year with little help from you.

Will Moss Rose come back after winter?

Even when they die off after a frost, these fast-spreading plants drop seeds as they flower, and it's not uncommon for the seeds to sprout the following year. If you decide to keep your portulacas in containers for the following summer, make sure the plants don't multiply in the container to the point of overcrowding.