How Long Do Key Limes Last in the Refrigerator?
Keep your citrus fresh for juice and zest with proper storage.
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
- Taut, smooth skin
- Bright green color
- Firm texture
- Use for juice
- Zest for baking
Week 2 (Still Good)
14–20 days
- Slightly duller skin
- Firm texture remains
- No visible mold
- Use for garnishes
- Store in fridge
Week 3 (Softening)
21–28 days
- Slightly soft spots
- Duller color
- Minor skin wrinkling
- Use for juice only
- Toss if mold appears
Week 4 (Toss)
28+ days
- Visible mold
- Mushy texture
- Strong fermented odor
- Toss
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?
Sage's Verdict: Look for soft spots that give way under pressure and any fuzzy 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.