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Potted lemon winter plan

Your typical first fall frost is a few weeks away. Lemons are among the least cold-hardy citrus, and roots in a pot get almost as cold as the air.

When we suggest this

  • Climate averageThe date falls from 28 days before your typical first fall frost to 7 days before your typical first fall frost, based on 1991–2020 climate normals.
  • Your noteYour note: it grows in a container.

What would stop us suggesting it

  • If it's still open after its window, it shows as overdue for up to 2 weeks, then closes.
  • When you mark it Done or Doesn't apply. "Doesn't fit my setup" stops it for that plant this season.

What to do

  1. Where winters bring regular freezes, move the tree indoors before nights drop into the 40s°F.
  2. Give it your brightest window. It needs at least 6 hours of direct sun to keep fruiting.
  3. Make the move gradual over a week or two, starting with a few hours at a time, to limit leaf drop.
  4. Where freezes are rare, keep it outside and plan a garage or porch spot for freeze nights.

What we can't know

  • How cold your winter will get compared with the average.
  • Whether you have a bright spot indoors.

Sources give the move-in point as before nights reach the 40s°F (Wisconsin), before the first fall frost (Maryland), or around Halloween in the Pacific Northwest (Oregon State). The 4-week lead before the typical first frost is our choice because first frost dates vary from year to year.

Where this advice applies

All US regions.

Gardens with a typical fall freeze, starting about 4 weeks before the typical first fall frost.

Where freezes are rare and brief, a potted lemon can stay outside and be moved in on freeze nights; the container task covers those nights.

Exceptions

  • Gardens with no typical fall freeze (frost-free climates).
  • Lemons in the ground.

Related guide sections

Sources

  1. University of Wisconsin–Madison Extension (Wisconsin Horticulture). Indoor Citrus. Accessed September 25, 2026
  2. University of Maryland Extension. Growing Dwarf Citrus. Accessed September 25, 2026
  3. Oregon State University Extension Service. How to grow Meyer lemons successfully in the Pacific Northwest. Accessed September 25, 2026
  4. UF/IFAS Extension (Gardening Solutions). Citrus. Accessed September 25, 2026
  5. Texas A&M AgriLife Extension, Travis County. Frosts and Freezes. Accessed September 25, 2026

Reviewed

Sources checked Sept 2026 · awaiting expert review

Gardenplanner research (AI-assisted), pending extension-qualified review

Rule id and version: lemon.container-indoors-fall@1