A. africanus subsp. walshii is by far the most difficult agapanthus to grow1. The best medium appears to be a very well-drained, sandy, acid mix with minimal watering in summer. It can only be grown as a container plant and will not survive if planted out. It is unfortunate that it is so hard to grow because it is most attractive when in flower and would make an excellent pot plant.1
These estimates for how long Fynbos agapanthus takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Average days | Min days | Max days (0)
Average days | Min days | Max days (0)
Average days | Min days | Max days (0)
Walsh's agapanthus
Agapanthus walshii