Q&A: Do I need to water my garden in the winter?
If you seen the irrigation trucks out each fall feverishly shutting down all of the sprinkler systems in town, you probably know that most plants don’t get watered in the winter. We all worry about frozen pipes and broken faucets when the chilly weather comes, so surely us gardeners are excused from the task of pulling out the hose and watering cans, right? Well…the answer, per usual is a complicated, “it depends!”
Let’s dig into the science behind watering in winter and why it’s sometimes necessary.
Soil and Plant Dormancy
While your tomatoes and peppers turn to mush at the first frost, many plants just enter a state of dormancy in the winter, meaning their metabolic processes slow way down. That means plants like asparagus, berries, and perennial herbs are not actively growing. They don’t need nearly as much water as they do in the summer, but their roots still need some moisture to survive.
In Nashville, our mild winters tend to be wet, and the soil rarely freezes deeply. That means the roots can uptake the water that the rain provides, but we need to keep an eye on our dear greens. When rain is scarce for weeks, even dormant plants can dry out. Winter winds and low humidity can wick moisture from the soil, and before you know it, that rosemary plant that you’ve used as holiday table decor for three Decembers is toast.
Practical Tips for Winter Watering
Check Soil Moisture: Insert your finger or a trowel into the soil. If it’s dry 2-3 inches down, it’s time to water.
Water During the Warmest Part of the Day: Aim for midday when temperatures are above 40°F to prevent water from freezing on the surface.
Deep Watering is Key: Water slowly and deeply to ensure moisture reaches the roots. Avoid splashing water on leaves, which can freeze and damage the plant.
Mulch for Moisture Retention: A layer of mulch or chipped leaves helps insulate the soil and retain moisture, reducing the need for frequent watering.
By understanding how plants and soil behave in winter, you can keep your garden hydrated without overdoing it. And here’s a quick side note, did you know that birds need water to keep their feathers primed and plush in the winter? While you’re out there with a hose, add some water to the bird bath and you’ll have a grateful flock of cold-weather friends. Happy gardening! 🌱
