Irises do need a fair amount of space, however, since they spread via fleshy rhizomes or, with Siberian irises, thick woody roots. Because of the amount of space they take up and the relatively ...

Successful spring planting depends on the type of iris used. According to Sullivan, irises that are suitable for spring planting include: Siberian irises ... Irises do well in warmer conditions ...

Siberian air will spread across US, and Trump inaugural is forced indoors The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar vortex ...