How To Deal With Irises After Flowering. Divide the iris if theyve been in place for more than four years or if the plants are crowded. Every 4-5 years you should dig out all the irises and cut off the old rhizomes dip them in a bleachwater solution to kill disease and borers and replant them.
Replanting Iris after dividing. Split the irises every year after flowering has ended during June. Divide the iris if theyve been in place for more than four years or if the plants are crowded.
Do this just after theyre done flowering.
Lily bulbs grow in a continuous cycle throughout the year and how you treat the plant after flowering determines how the following season will turn out. Water consistently and deeply especially during summer drought. Lily bulbs grow in a continuous cycle throughout the year and how you treat the plant after flowering determines how the following season will turn out. Split individual plants by cleaving the rhizomes with a spade leaving the part to be retained undisturbed in the soil.