To store harvested zucchini the right way, keep it unwashed at 41 to 50°F with high humidity. Your refrigerator crisper drawer works great for this purpose. The squash stays fresh for up to two weeks when you get these conditions right in your fridge.
I tested many storage methods over the years in my garden. Perforated plastic bags work best for keeping your zucchini fresh. Poke a few small holes in a regular produce bag to let air flow through. You need that balance of moisture and airflow to refrigerate zucchini properly.
The zucchini storage temperature matters more than most people think. Purdue University research shows that temps below 41°F cause chilling injury to the squash. You'll see pitting on the skin and water-soaked spots that decay fast. Keep it warmer than your average fridge setting.
When I first started growing zucchini I made the mistake of washing everything right after harvest. The extra moisture led to mold growing within just a few days in my fridge. Now I leave the dirt on until I'm ready to cook. This simple change doubled my storage time almost overnight.
Leave about one inch of stem attached to your zucchini when you harvest it from the garden. That little stem cap helps seal in moisture and keeps bacteria from getting into the fruit. Squash without stems spoil much faster than those with the stem still attached at the top.
Your crisper drawer gives you about 95% humidity and that's perfect for storing zucchini. Purdue data backs this up as the ideal storage condition. Add a damp paper towel to the bag if your fridge tends to dry things out too much during longer storage.
For the best texture and flavor eat your stored zucchini within four days of picking it from your garden. The squash is still safe to eat for up to two weeks. But the quality drops off over time in your fridge. Fresh picked always tastes better than week-old storage squash in my experience.
Check your stored zucchini every couple of days for soft spots or mold forming on the skin. Remove any squash that shows signs of decay before it spreads to others in your bag. One bad zucchini can ruin your whole stored harvest if you leave it sitting there too long. This quick check takes just a minute and saves you a lot of waste from spoiled produce.
Read the full article: When to Harvest Zucchini: Ultimate Guide
