You should protect, tidy, and lightly feed your strawberry plants going into winter so they survive cold weather and produce well next year.

Quick Scoop

  • Clean up old leaves and extra runners.
  • Add a thin layer of compost around plants.
  • Wait until the soil is cold, then mulch 4–6 inches with straw, leaves, or pine needles.
  • Potted strawberries: move to an unheated but sheltered spot and insulate.
  • In spring, pull mulch back gradually once growth starts.

Why winter care matters

Strawberries are hardy, but their crowns and flower buds can be damaged by deep freezes and repeated freeze–thaw cycles, which can ruin next year’s crop. Winter care is mostly about keeping them consistently cold and insulated, not warm.

Step‑by‑step: what to do before and during winter

1. Tidy the plants

  • Trim runners: Cut off excess runners so the main plants don’t waste energy supporting too many “baby” plants. Keep only the ones you need to fill gaps in the bed.
  • Remove dead or diseased leaves: This improves air flow and reduces overwintering pests and diseases.

Example: Imagine a crowded bed with a mat of runners; cutting them back now means the remaining plants wake up stronger and give larger berries in spring.

2. Lightly feed the bed

  • Spread 1–2 inches of finished compost around, not on top of, the crowns.
  • Avoid heavy, high‑nitrogen fertilizer late in the season so you don’t push tender new growth right before hard frost.

This compost breaks down over winter and is ready for roots when growth resumes.

3. Wait for dormancy, then mulch

  • Let plants harden off: wait until several nights around 20°F / -5°C or your soil surface has frozen about 1–2 cm (½ inch).
  • Then add 4–6 inches of loose mulch over and around the plants.

Good mulches:

  • Clean straw (classic choice)
  • Shredded leaves
  • Pine needles or pine straw
  • Evergreen boughs or similar loose materials

Avoid: heavy, soggy materials that mat down and smother crowns. Mulch helps by:

  • Buffering rapid temperature swings
  • Reducing crown and root damage
  • Preventing plants from being heaved out of the soil

Pots, raised beds, and in‑ground patches

Here’s how care changes depending on where your strawberries grow.

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Planting type What to do in winter
In‑ground beds Clean up, trim runners, then cover plants with about 4 inches of straw or similar mulch after soil has frozen lightly.
Raised beds / pyramids Use a thicker mulch layer (6–8 inches), since raised beds get colder than ground level.
Pots / strawberry jars Move to an unheated garage, shed, or sheltered spot; insulate pots with straw, burlap, or blankets and mulch the top.
Outdoor containers (can’t move) Wrap the container with burlap or other insulation and pack straw around and over the plants.
Pots and raised beds lose heat faster, so they need extra insulation compared to in‑ground patches.

Early spring: what to do with the mulch

  • Watch for new growth: when about 25% of plants show green leaves, start gently pulling mulch away from the crowns.
  • Leave some mulch between rows as a weed‑suppressing, moisture‑holding layer and clean “bed” for berries to rest on.

Remove mulch too early and a late frost can destroy the first flowers, which are usually the biggest berries of the season.

A few different viewpoints gardeners share

Home gardeners and forum folks often debate how “intense” winter prep needs to be:

  • Colder‑climate gardeners swear by deep straw and sometimes extra row covers.
  • Milder‑climate gardeners may just use a light mulch and focus more on drainage than heavy insulation.
  • Container growers focus on keeping pots just cold enough to stay dormant but not so exposed that roots freeze solid.

If you’re unsure, it’s usually safer to slightly over‑insulate and then thin or pull back some mulch in early spring if plants look too slow to wake up.

TL;DR

For “what to do with strawberry plants in winter”: clean them up, trim extra runners, add a bit of compost, then wait for real cold and cover them with 4–6 inches of loose mulch, giving extra protection to pots and raised beds and pulling mulch back slowly in spring.

Information gathered from public forums or data available on the internet and portrayed here.