How to Winterize Outdoor Planters and Fountains Safely
By OUTDOOR & lndoor planters for | Published: 2026-10-14
Category: Tips & Care
A step-by-step guide to winterizing outdoor planters and fountains so cold weather does not crack pots, kill roots, or ruin pumps.
Quick answer
To winterize outdoor planters and fountains safely, start before the first hard freeze. Empty and store fountains, move frost-sensitive pots indoors or into a garage, and keep hardy planters drained so trapped water cannot expand and crack the container. The exact steps depend on your pot material, plant hardiness, and local low temperatures.
Why freeze damage happens to planters and fountains
Water expands when it freezes, and that expansion is what cracks ceramic, concrete, and even some resin planters. A pot left outside with saturated soil or standing water has no room for the ice to move, so the pressure goes into the walls. Fountains face the same risk in their basins, pumps, and supply lines. Small amounts of water trapped in a pump housing or a narrow fountain channel can split parts that are expensive to replace. The fix is not one big action on the coldest day; it is a sequence of small steps that remove or manage water before temperatures drop.
Know your planter material and plant hardiness
Not every pot needs the same treatment. Glazed ceramic and concrete are vulnerable to freeze-thaw cycles, especially if they are already cracked or have unglazed feet. Resin and fiberglass tolerate cold better but can still become brittle. Terracotta is porous and absorbs water, making it one of the riskiest materials to leave out. On the plant side, check whether your species is hardy in your USDA zone. A hardy perennial in a ground bed may survive, but the same plant in a pot has roots exposed to colder air from all sides. When in doubt, treat the pot as the more fragile element and protect it first.
Clean and inspect before storage
Before you store anything, remove dead leaves, spent annuals, and loose soil. Rinse pots with water and a stiff brush; avoid harsh chemicals that can leave residue in porous materials. Inspect each planter for hairline cracks, chipped rims, or loose saucers. A small crack will get worse over winter, so note it now and decide whether to repair, repurpose, or retire the pot. For fountains, wipe the basin and remove any visible debris or algae. This is also the time to check pump intakes and tubing for cracks or blockages.
Drain and store fountains correctly
Fountains should be shut down, drained, and stored before the first freeze. Unplug the pump, remove it from the basin, and store it indoors in a bucket of water or a frost-free location—never leave a pump full of water outside. If your fountain is too heavy to move, drain it completely, blow out or siphon any lines, and cover it to keep rain and snow from refilling the basin. A cover that traps moisture can do more harm than good, so use a breathable tarp or leave a small gap for airflow. Check the manufacturer's instructions for any specific winterizing steps for your model.
Decide what stays outside and what comes in
Hardy plants in frost-proof containers can often stay outside with protection, but tropical and tender plants need to move indoors or into a garage before temperatures drop below their tolerance. If you bring pots inside, place them where they get appropriate light and away from heat vents. For pots that stay outside, group them together against a wall or foundation to share warmth, and insulate the root zone with mulch, straw, or burlap. Elevate pots on pot feet or bricks so they do not sit in standing water. If a pot is too large to move, wrap the sides and top with insulating material, but leave the drainage holes open so water can escape.
Winterizing steps: order of operations
- Check the forecast and set a deadline: Find the average first frost date for your area and plan to finish winterizing at least a week before it. Common mistake: waiting until the night of the first freeze, when soil is already wet and pots are too heavy to move safely. Checkpoint: mark the date on your calendar and work backward.
- Stop watering and let pots drain: Reduce irrigation for outdoor planters about a week before your target date so soil is not saturated. Tip pots on their sides or elevate them so drainage holes are clear. Common mistake: leaving saucers attached, which holds water against the pot base. Checkpoint: lift the pot—if it feels heavy with water, wait another day.
- Remove plants that will not survive: Pull spent annuals and tender perennials. For hardy plants that stay outside, cut back top growth but leave some stems for insulation. Common mistake: composting diseased foliage in the same bed, which can spread problems next season. Checkpoint: know each plant's hardiness zone before deciding to leave it out.
- Clean and dry containers: Scrub pots with water and a brush, then let them dry completely before stacking or storing. Common mistake: stacking wet pots, which traps moisture and encourages mold or freeze damage. Checkpoint: store pots upside down or with spacers between them.
- Shut down and drain fountains: Unplug the pump, remove it, and store it indoors. Drain the basin and any lines. If the fountain stays outside, cover it with a breathable material that keeps rain out but lets air circulate. Common mistake: leaving the pump in the basin, where trapped water can freeze and crack the housing. Checkpoint: store the pump in a frost-free place, not in the fountain.
- Insulate pots that stay outside: Group pots together, wrap them with burlap or straw, and mulch the top of the soil. Elevate them on pot feet or bricks so they do not sit in water. Common mistake: wrapping the pot so tightly that moisture cannot escape, which can cause rot or freeze damage. Checkpoint: ensure drainage holes remain open and air can move around the pot.
- Do a mid-winter check: On a mild day, look for cracked pots, shifted covers, or standing water in saucers. Fix small problems before they get worse. Common mistake: ignoring a cracked pot until spring, when the damage may be beyond repair. Next step: keep a repair kit handy and note any pots that need replacing.
Product facts
- Egg Shell Pots - (Silver Rock) By Plantatorem: Egg Shell Pots - Set of 4 (Silver Rock) are structured from 100% natural materials, completely carbon-free, and hand-glazed for a unique finish. Natural, hand-glazed materials can be sensitive to freeze-thaw cycles, so these decorative outdoor planters should be drained and stored or protected before hard freezes.
- Honeycomb Planter By Plantatorem: Honeycomb Planter is a ceramic planter that comes as a case of 6, each with a textured honeycomb pattern. Because they are ceramic and sold as a set, it is worth moving them indoors or into a frost-free space rather than risking cracks that would ruin the matched set.
- Dotted Cylinder Planter With Attached Saucer: Dotted Cylinder Planter With Attached Saucer is a ceramic planter pot with a tactile hobnail pattern, designed for indoor use. An attached saucer can trap water against the base, so if this pot is used outdoors in cold weather, empty the saucer and store the planter inside to prevent freeze damage.
