Does Watermelon Go Bad? The Answer You are Waiting for is Here!

Watermelons have been a favorite fruit by any especially during the hot and humid season of summer. However, does watermelon go bad? That question is often asked by many friends of mine, and I can’t help but also find out the answer once and for all.

Fortunately, this curiosity made me start planting watermelons on my own backyard. With this opportunity, I had the chance to observe how it is to grow watermelons and at the same time, know a little more about this quintessential fruit.

I will reveal to you the answer to the question of does watermelon go bad through this article. In addition, I will also throw in something extra about watermelons that can be useful to you as well.

Does Watermelon Go Bad?

The idea of planting my own watermelons was out of curiosity and also because I have come to enjoy it as well. It is the perfect solution during the perpetually hot days of summer.

Not to mention that watermelons are also very nutritious. Be that as it may, like other fruits, watermelons also have their expiration date. I have come to observe what happens to a watermelon from its beginning until it’s eventual end since I have started growing them.

From the time of harvest, watermelons can last up to seven to ten days under room temperature. To be sure that it will last longer than that, refrigeration is the best way. Under low temperatures, watermelons can last for about two weeks.

To put things simply, a watermelon can go bad just like any other fruit. However, proper storage can always help preserve and make it last longer.

Spotting a Watermelon That Had Gone Bad

As I have shared, watermelons can go bad over time. Like other fruits, they only have a certain period after they are harvested and will eventually they go bad. Here are some signs you can look for to determine if your watermelons have already gone bad.

Spots and Discoloration


Watermelons have a very thick rind. Fresh watermelons will have a smooth rind without any bruises or dark spots.

On the other hand, watermelons that have started to go bad will usually have dark spots that can also be an area where mold will start appearing. When I notice these signs on my watermelons, I immediately discard them.

Presence of Slime

Another sign you need to look for is after cutting the watermelon open. Fresh watermelons have an almost bright red color for its flesh when cut open. The ones that have gone bad will usually have slime and discoloration on its flesh. This is a sure sign that it is definitely time to get rid of it. 


Lastly, the smell cannot be dismissed when assessing if a watermelon has already gone bad. This is also one of the good indicators that I have come to observe.

The moment that the watermelon emits a foul or punky odor, this is an indicator that it is no longer fresh and should be discarded. To get a better visual about this, watch this video

Bonus Information: Planting and Harvesting Watermelon

As a bonus, I will share the easy steps on how to plant as well as harvest watermelon. You can follow these simple steps for you to be able to grow and enjoy watermelons at your own home.

  • Choose the perfect location for the watermelon - Take note that watermelons require about 6 hours of the sun daily. They also have large vines that will require space. Till the soil and create mounds spaced 2 feet apart. Watermelons thrive on soil that fertile, loamy, and has adequate drainage. 
  • On top of the mounds, make a slightly concave surface and poke 3 to four 1-inch deep holes. Place one to four seeds per hole and then cover it up with soil.
  • The seeds will start to germinate when the soil reaches 70 degrees Fahrenheit. This usually takes around seven to ten days. Keeping the soil moisturized will easily do the trick which means watering it once daily. 
  • Keep in mind to water less once the flowers bloom. Be sure to also weed around the base on a regular basis. Keeping a thick layer of mulch can also help keep the weeds from growing around the plant.
  • Watermelons will achieve full maturity during the warm season given that it grew under perfect conditions. Thump the watermelon to check its ripeness. If it produces a dull noise when thump means it is ripe and ready. 
  • Another sign is a dried out, curly tendril attached to the stem that would indicate its ripeness. In general, you can follow the 80 to 120 days cycles of the watermelons to now that it is the right time to harvest.
  • Using a sharp knife or garden shears, cut the watermelon from its vine. Storing under room temperature will make it last for seven to ten days. Meanwhile, if kept refrigerated, it can go up to two weeks.

To have a more constructive idea on how all of these are done, watch this short clip:


Ultimately, like any other perishable goods, watermelons do go bad after a period of time. At room temperature, watermelons can last for about seven to ten days. Meanwhile, at lower temperatures, watermelons can last longer which is about 2 weeks.

The eventual expiration of watermelons can be easily observed by checking spots, discoloration, and smell. Once these signs become apparent, the watermelons must be discarded immediately.

Did this article answer if watermelons go bad? Did you learn some useful information about watermelons? Do you have other ideas that might be related to this topic?

Feel free to let me know your thoughts and opinions by leaving your comment below.

Dan Harris

Hi. I'm Dan Harris. My wife and I started gardening 5 years ago. Neither one of us had any gardening background but we loved the idea of growing our own organic food. Over the years, our garden has almost doubled in size and I’ve learned a lot from my season’s successes and failures. I’ve been excited to share my own beginning knowledge and special skills with all garden lovers.

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