Agapanthus Not Flowering Well. Agapanthus plants grow well in pots because they actually enjoy being a bit root bound. Agapanthus are easy to propagate by division - between spring and early summer or in early fall after plants have finished flowering.
Be sure the soil drains well or the plant may rot. When the leaves begin to yellow withhold water. Agapanthus requires full sun well draining soil protection over Winter and time to establish after planting to display flowers.
This is a major job due to agapanthuss tangled fleshy heavy root system.
All have had the same treatment and I cant understand why this has happened. 16052021 Why is My Agapanthus Not Blooming. Agapanthus benefit from an annual feeding in spring and organic mulch in the fall. There are several different reasons why your plants might not be flowering such as lack of sun lack of water crowded roots and frost-damage.