Mossy Saxifrage (botanically known as *Saxifraga arendsii*) is generally a tough little plant that can handle the cold. However, because this low-growing groundcover stays so close to the earth, there are a few situations where it needs a little extra TLC to make it through a harsh winter.
Is Mossy Saxifrage Winter Hardy?
Most Saxifrage varieties are perfectly winter hardy in our climate. Generally, you don’t need to dig them up or worry about fancy winter protection. Mossy Saxifrage is a specific, low-growing variety that usually holds its own just fine.
When to Give Your Plants Extra Protection
Even though they’re tough, there are a few “exception to the rule” scenarios where you should step in. You’ll want to provide some extra cover if:
- Your plants were started in a greenhouse.
- You planted them late in the season.
- You’re dealing with “black frosts” (extreme cold without snow cover).
Greenhouse-raised plants aren’t used to the shock of a real winter and might freeze during their first year outside. The same goes for plants put in the ground late in the fall—they just haven’t had enough time to establish a strong root system. Also, keep an eye out for those bitter, dry frosts; without a blanket of snow, these can be dangerous for any Saxifrage variety.
Using Mulch as a Winter Blanket
To keep your Mossy Saxifrage cozy, lay down a protective layer of mulch using fallen leaves, fresh compost, brush, or evergreen branches. Not only does this insulate the plants from deep freezes, but it also provides a nice slow-release nutrient boost for the soil.
Winter Care Tips
Like most Saxifrage, the mossy variety is pretty low-maintenance. However, there are a few things to keep in mind once the temperature drops.
Finding the Perfect Winter Spot
Even in the winter, location is everything. While some varieties don’t mind a sunny winter spot, most are actually quite sensitive to wild temperature swings (like thawing in the sun and freezing again at night).
Ideally, a shady spot with a consistent blanket of snow is the best-case scenario for almost all Saxifrage types during the winter months.
Managing Moisture Levels
Don’t forget to check on your plants’ water needs! Mossy Saxifrage has very shallow roots that can easily lose contact with the soil or dry out. If the ground isn’t frozen and it’s been a dry winter, they might need a little drink.
On the flip side, you definitely want to avoid “wet feet” (standing water). Make sure your soil has great drainage—mixing in a little sand or gravel helps a lot. Also, avoid covering your plants with airtight materials like plastic; they need plenty of air circulation to stay healthy and rot-free.
