I had the following phormium cultivars planted in my z10 Southern California, USA yard about 8 months ago: Apricot Queen, Surfer, Flamingo, Jack Spratt, Pink Panther, Purpurceum, Rubra, Sundowner, Yellow Wave. I watched the contractor place them in a full sun location and go to great lengths to provide good drainage including several inches of crushed rock under the soil and a french drain. I have been careful not to over water and have not applied any fertilizer (inorganic or organic), however the planting soil is well composted (ph 6.0). Question: My Phormium are beginning to look ragged. I am not sure if I should clip the brown tips and the undergrowth, or is there some other remedy? Thanks for any help that those with more experience can offer.
