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

Plan to divide your irises every 3 to 5 years to prevent overcrowding and reduced flowering. Cutting back bearded iris foliage helps prevent diseases and pests, especially iris borers, from ...

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 ...