Siberian iris does spread over time, but it does so at a relatively slow pace. The plant forms a dense clump of upright foliage, which gradually expands as the short rhizomes spread outwards. This gradual spread allows the plant to form a bushy tuft of foliage that adds volume and beauty to the garden.
In terms of size, Siberian iris typically reaches a height of 2-4 feet (60-120 cm). This height can vary slightly depending on the specific variety, as there are also dwarf varieties available that stay smaller in size. These dwarf varieties can be a great option for smaller gardens or for adding pops of color to border plantings.
I have personally grown Siberian iris in my own garden, and I have found that it is a relatively low-maintenance plant. Once established, it requires minimal attention and continues to thrive and spread over the years. This spreading habit can be beneficial for filling in empty spaces in the garden and creating a lush, full look.
To further illustrate its spreading nature, let’s take a closer look at the growth habit of Siberian iris. The plant starts from a central clump of foliage, which gradually expands as new rhizomes grow and spread horizontally. These rhizomes serve as underground stems, producing new shoots and roots as they extend. Over time, this process results in the formation of a dense clump of foliage that can cover a significant area in the garden.
It is important to note that while Siberian iris does spread, it is not considered invasive. Its spreading habit is relatively slow and manageable, making it a desirable plant for many gardeners. However, if you prefer to control its spread, you can easily divide the clumps every few years to limit its expansion and maintain the desired size.
Siberian iris does spread over time, forming a dense clump of upright foliage that gradually expands from short rhizomes. Its spreading habit adds volume and beauty to the garden, and it can reach a height of 2-4 feet (60-120 cm), although dwarf varieties are also available. Siberian iris is a low-maintenance plant that can be a great addition to any garden, providing color and texture while gradually spreading to fill empty spaces.
