When it comes to foxgloves, there are two main groups of true perennials: herbaceous perennials and those with evergreen rosettes. Let’s delve into each of these groups and explore the different species within them.
1. Herbaceous Perennials:
Herbaceous perennial foxgloves, such as Digitalis grandiflora and Digitalis lutea, are known for their stunning flowers and die down during cold winters. I personally love these varieties because of their ability to come back year after year, adding a burst of color to the garden. During the winter months, the foliage dies back to the ground, but fear not, as they will regrow from their roots when spring arrives. This natural cycle of growth and dormancy is what makes them true perennials.
2. Evergreen Rosette Retainers:
On the other hand, there are foxglove species that retain an evergreen rosette, even during the colder months. Two prominent examples of this group are Digitalis parviflora and Digitalis ferruginea. These species maintain their low, basal rosettes of leaves throughout the year, providing year-round interest in the garden. The evergreen foliage not only adds beauty but also acts as a protective layer for the plant during winter.
I remember planting Digitalis ferruginea in my own garden and being delighted by its ability to hold onto its green foliage throughout the year. It truly elevated the aesthetics of my landscape, especially during the winter months when most other plants were dormant. The contrast between the evergreen leaves and the tall, elegant flower spikes that emerged in the summer was a sight to behold.
To summarize, both herbaceous perennial foxgloves and those with evergreen rosettes are considered true perennials. While the former die down during winter and regrow from their roots, the latter retain their evergreen foliage, providing year-round interest in the garden. Whether you prefer the burst of color from the herbaceous perennials or the evergreen beauty of the rosette retainers, incorporating foxgloves into your landscape is sure to add charm and elegance.
