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Watermelons are harvested by hand when they reach full ripeness, usually 70 to 100 days after planting depending on the variety.
Knowing exactly when and how watermelons are harvested makes a huge difference in how sweet and juicy they taste.
If you pick too early, the flesh stays pale and bland, but if you wait too long, the fruit turns mealy and mushy.
So how are watermelons harvested, exactly, and what signals tell a farmer or gardener that the time is right?
In this post, we’ll walk through how watermelons are harvested step by step, from checking ripeness signs to cutting the fruit from the vine and getting it ready for storage or sale.
Let’s dive in.
How Are Watermelons Harvested: The Ripeness Signs
Watermelons are harvested only after they’ve shown clear signs of ripeness, and experienced growers check several of these before making a cut.
Here’s what to look for.
1. The Tendril Test
One of the most reliable ways to tell if watermelons are ready for harvesting is the tendril test.
Look at the curly tendril closest to the stem of the fruit.
When that tendril turns brown and dries up, the watermelon is ripe and ready to be harvested.
If it’s still green and pliable, the fruit needs more time on the vine.
2. The Ground Spot Turns Creamy Yellow
As watermelons ripen, the spot where they rest on the soil changes color.
When watermelons are harvested at peak ripeness, that ground spot has shifted from white or pale green to a warm, creamy yellow.
A bright white spot usually means the fruit is still underripe.
3. The Hollow Thump Sound
Give the watermelon a good thump with your knuckles.
Ripe watermelons sound hollow and deep, while unripe ones sound dull and flat.
This trick isn’t foolproof, but combined with the tendril and ground spot checks, it helps confirm that watermelons are ready for harvesting.
4. The Skin Loses Its Shine
A shiny, glossy rind often signals an unripe melon.
When watermelons are harvested, the skin has usually dulled to a matte finish.
The surface also feels slightly rough, and you may notice webbing or brown spots that develop as the fruit matures.
How Are Watermelons Harvested: The Cutting Process
Once those ripeness signs line up, harvesting watermelons is actually pretty simple.
Here’s how it goes.
1. Grab the Right Tools
Most growers use a sharp pair of pruning shears or a clean knife to harvest watermelons.
A clean cut protects the vine and reduces the risk of disease spreading to other plants.
Some large-scale farms harvest watermelons with specialized mechanical harvesters, but the principle stays the same.
2. Cut the Stem, Don’t Pull
When harvesting watermelons, cut the stem about one to two inches from the fruit.
Never yank or twist the melon off the vine because that can damage the plant and bruise the fruit.
A short stem left on the watermelon also helps it store longer.
3. Handle With Care
Watermelons bruise easily, so lift them gently with both hands.
Dropping a watermelon during harvesting can cause internal cracks that shorten its shelf life.
Place each melon in a bin or basket lined with soft material to prevent damage.
4. Harvest in the Cooler Hours
The best time for harvesting watermelons is early morning or late evening.
Cooler temperatures keep the fruit from overheating, and the melons stay fresher after they’re picked.
Field heat can cause watermelons to lose sweetness quickly, so timing matters.
How Are Watermelons Harvested on a Large Scale?
On commercial farms, how watermelons are harvested looks a little different but follows the same basic rules.
Crews walk the fields and check for ripeness signs before harvesting watermelons by hand.
Some operations use conveyor belts and field carts to move the fruit quickly out of the sun.
After harvesting, watermelons are washed, graded, and packed into bins for shipping.
Temperature-controlled trucks then keep them cool on the way to grocery stores and markets.
So, How Are Watermelons Harvested?
Watermelons are harvested by hand once they pass the ripeness checks, then cut cleanly from the vine with shears or a knife.
The tendril test, the creamy yellow ground spot, the hollow thump, and the matte skin all tell you when watermelons are ready for harvesting.
Handle them gently, harvest during cooler hours, and your watermelons will stay sweet and fresh for weeks.
Now you know exactly how watermelons are harvested and when to pick them at their very best.