How Long Do Key Limes Last in the Refrigerator?
How to Store and Identify Fresh Key Limes
Key limes stay fresh and usable in the refrigerator for 3–4 weeks.
Key limes are prized for their small size, intense aroma, and tart flavor. Because they are highly acidic, they are naturally resistant to spoilage compared to softer fruits, but they can still succumb to mold or drying out if left in improper conditions. When stored correctly in the refrigerator, these vibrant citrus fruits maintain their moisture and zest quality for several weeks. Knowing the signs of aging helps you determine when a key lime is perfect for your next batch of key lime pie or garnish.
Heads up: shelf-life ranges are estimates based on home storage. We make no guarantee of accuracy. When unsure, throw it out.
The full timeline
Day 1 (Peak Fresh)
1–7 days
- Smooth, taut skin
- Bright green color
- Firm to the touch
- Use for juicing
- Zest for baking
Week 2 (Still Good)
14–20 days
- Slightly duller skin texture
- Firmness is maintained
- No visible mold or fuzz
- Use for garnishes
- Continue refrigerated storage
Week 3 (Softening)
21–28 days
- Soft spots on the skin
- Duller color profile
- Minor wrinkling or shriveling
- Use for juice only
- Discard if mold appears
Week 4 (Toss)
28+ days
- Visible mold growth
- Mushy or sunken texture
- Strong fermented odor
- Toss in the trash
Common questions
How long can I keep key limes fresh?
Key limes stay fresh and usable in the refrigerator for 3–4 weeks.
Should I store key limes in the refrigerator or on the counter?
To maximize freshness, it is best to store your key limes in the refrigerator where they will last up to 4 weeks.
Can I freeze key limes for later use?
Yes, you can freeze key limes. While freezing may affect the texture of the fruit, it is an effective way to preserve the juice and zest for culinary use.
How can I tell if a key lime is past its prime?
Look for soft spots that give way under pressure, any fuzzy mold growth, or a pungent, fermented smell.
Keep your key limes in a breathable bag in the crisper drawer to maximize their shelf life and zest quality.