Agapanthus Planting Guide. Agapanthus grows to an ideal size for borders but wont grow so large as to block out your view of other plants in the garden. Cover the roots completely with 1-2 inches of soilfirming the soil around the plant.
How to plant Agapanthus. Agapanthus is a rhizome plant and it will begin to split in two or three years. The ravishing spherical flower clusters will arrive in early to mid-summer.
Place a mound of soil in the bottom of the holeand carefully spread the dormant bare roots over themound.
A single plant will fill a 12-inch pot. Plant Agapanthus just deep enough to cover the roots and space them about 8 inches apart. Ensure that there is plenty of space for it to bulk out. How to plant Agapanthus.