Native South Texas plants Agarita: Can they be propagated and if so, how? Should they be fertilized or left alone?
Agarita (Mahonia trifoliata) can be propagated from seeds, division or cuttings.
Harvest fruits as soon as they are ripe and sow immediately. They usually don't germinate until the following spring, however. Several weeks of cold stratification helps speed germination.
Perhaps the easiest way to propagate it is by dividing suckers that sprout from the base of the plant. Dig out shoots from the edge of the clump and pot them up to encourage strong root development.
The plant thrives with low fertility, so it should need little if any supplemental fertilization.