Skip to main content

When should you harvest watermelon? What you need to know

Get the timing right for your watermelon harvest

Knowing when to harvest watermelon can be tricky, especially if you’re used to growing crops like tomatoes, where there’s an obvious physical change (like turning from green to red) that indicates ripeness. For watermelons, the indicators are often more subtle and hard to spot unless you know what you’re looking for. With this quick rundown, harvesting watermelon during summer won’t be as daunting as it seems.

Growing watermelon

How to tell your watermelon is ready for harvesting

As your watermelons grow and ripen, you’ll notice that the green color has a shiny look to it. One of the biggest indicators that a watermelon is ready to harvest is when the shine turns dull. A ripe watermelon will have a dulled green appearance and the belly of it (the part that sits on the ground) will turn from a green-white to a yellow/cream color.

What does this mean for you? Well, it means that in order to best tell when your watermelons are ready to harvest, you’ll have to check on them daily. If you aren’t familiar with the melon’s shiny appearance and aren’t checking the underside, you’ll have a harder time knowing when they’re done growing.

Some experienced gardeners even say you can tell by tapping on the watermelon. A ripe watermelon will have a hollow ring, whereas one that isn’t ready to harvest will sound more metallic; however, to the untrained, inexperienced ear, the two sounds seem the same. That’s why the best way to know when to harvest watermelon is by relying on appearance.

What’s the best way to harvest watermelon?

When harvesting your watermelon, you should leave about 2 inches of the stem on the fruit. Using a sharp knife, cut the watermelon from the vine. It can be stored for roughly a week at room temperature and about two to three weeks in a 50- to 60-degree Fahrenheit environment (like a fridge).

Remember: They don’t ripen off the vine. Once you make the cut, that’s it. That’s the melon you’re getting. So, be as sure as you can that the watermelon is ready.

Baby watermelon

Growing a healthy, delicious fruit

Growing delicious watermelons will look a bit different at the start depending on the climate you’re in. Warmer climates and areas with longer growing seasons can sow their seeds directly into their gardens about one to two weeks after the last frost; however, if you’re in a cooler climate, you should start your seeds indoors about two to three weeks before the last frost so that the seedlings can be transplanted into the garden two weeks after.

In either place, you can always buy watermelon seedlings from nurseries, though you should still be sure to follow the guidelines for when to plant them in outdoor garden beds. Good watermelon growth relies on proper care and conditions. If those are met, it’s likely you’ll be harvesting many melons in the summer.

Ideal conditions for watermelon plants

Watermelons should be planted in loose, well-draining soil that can retain moisture well. They prefer to be in full sun locations where they can receive a lot of morning and afternoon light and absorb the nutrients needed to produce delicious fruit. Melons prefer to have a soil pH of 6 to 6.8, so it’s always best to test your soil before planting to make sure they’ll be able to thrive in that environment (or so you know if you need to provide additional material to the soil to achieve the desired pH balance).

Watermelons do like to be planted on hills, mounds, or raised rows, so take care not to pack the soil too tightly when setting up the growing space. You want to give them a well-rounded environment to thrive in, so try to keep the soil as loose as you can during this process.

Watering requirements

In addition to proper sunlight, your watermelons will continue to thrive with regular watering from seedling to maturity. Similar to other fruits like tomatoes, watermelons do the best with 1 to 2 inches of water per week until they begin to grow fruit. The soil should be kept moist but not soggy, which is why it’s extra important to make sure the soil is loose and well-draining. Once the fruit begins to grow, you can reduce the amount of water you give the plants. This causes the fruit to start storing its sugars and produces the sweetest melons.

In the proper conditions, growing a sweet, ripe watermelon should be fairly straightforward, but don’t worry if you don’t get it right the first time (or the second, third, or fourth times, either)! Gardening at its core is a trial-and-error process, and one location may be better than another. Sometimes, the weather conditions themselves work against you. What’s important is that you do the best you can with what you have, and your plant will do its best in return.

Editors' Recommendations

Use these tips to start a successful indoor vegetable garden this winter
Want to grow veggies indoors? Here's how to do it in winter
A container gardening display

Come fall when the growing season ends, a lot of gardeners will spend the winter prepping and thinking about what they want to grow next spring — all the while lamenting how they miss having fresh veggies and herbs around during the colder months. That doesn't have to be the case, though. You can easily grow some of your favorite veggies indoors, even without a greenhouse.

Although you can't grow everything, and the indoor harvests are often smaller, you’ll be able to have enough that you can still enjoy the feeling of preparing and eating something you grew. What's more, you can even use these tips and tricks to grow fresh veggies year-round if you don't have the outdoor space for a traditional garden!

Read more
A guide to winter lawn fertilizer for keeping your turf healthy this season
Tips for picking and applying winter lawn fertilizer
Fertilizing lawn

Besides mowing and watering, part of keeping a lush lawn is fertilizing it properly in the fall. If you've ever shopped for grass fertilizers, you may have heard of winterizing fertilizer. Basically, this type of lawn food, typically a nitrogen-heavy version, prepares grass with an energy reserve for winter. For an explanation of why you should fertilize your grass just before wintertime and how you should do it, read ahead.

Why would you fertilize your lawn during the winter?
Fertilizing way ahead of the growing season will help your grass grow healthy when the temperature warms up. You might see companies refer to such seasonal fertilizers as winterizing fertilizers. This name is somewhat misleading since you want to apply the fertilizer during late fall when grass growth slows down. They're all about preparing your grass for winter.

Read more
4 November garden plants you should consider growing
The best crops and landscape plants for late fall
Close-up of daffodils in sunlight

November is the end of autumn and the beginning of winter, so it isn’t typically a time when people think about working in their gardens. However, November can still be a productive gardening month! We’ve prepared a list of four flowers and vegetables you can plant in your garden this November — we’ll even give you tips and tricks for growing them, what climates they grow best in, and when you can expect to see results. If you aren’t planning on planting a cover crop this winter, try out one of these four November garden plants.

Daffodils
Daffodils are spring-blooming flowers, but they’re often planted in the fall. Daffodil bulbs should be planted two or three weeks before the ground freezes, so keep an eye on your local weather for the best results. In mild climates, daffodils can be planted as late as the end of November, while cooler climates may need to plant them in September or October.

Read more