Most perennials are divided in spring or fall, but bearded iris prefer division in summer. On this week's episode of the ...

Irises can look wonderful in early summer, with masses of colourful blooms held on stout flower stalks. However, after several years the clumps will run out of steam and die off in the middle ...

Bearded irises need dividing more often than other types and September is an ideal time to do it. Iris clumps are very easy ...