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Watermelons take about 70 to 100 days to harvest after planting, depending on the variety.
Some early-maturing types can be ready in as little as 65 days, while larger heirloom varieties may take up to 120 days.
If you’ve been wondering how long watermelon takes to harvest, the answer really depends on the type you’re growing.
In this post, we’ll cover how long watermelon takes to harvest, the signs that tell you it’s ready, and tips to get the timing just right.
Let’s dig in.
How Long Watermelon Takes to Harvest
When you ask how long watermelon takes to harvest, the honest answer is that it varies based on variety, climate, and growing conditions.
Watermelon takes roughly 70 to 100 days from planting to reach full maturity in most home gardens.
That said, knowing the average days to harvest for your specific variety is the best place to start.
1. Days to Maturity Varies by Variety
The time watermelon takes to harvest depends heavily on the type you planted.
Icebox varieties like Sugar Baby often take around 70 to 80 days to be ready for harvest.
Standard round varieties such as Crimson Sweet usually take about 80 to 90 days.
Large oblong types like Charleston Gray can take 90 to 100 days or even more.
2. Climate and Temperature Play a Big Role
Watermelons love heat, and the warmer the weather, the faster they tend to mature.
In warm climates with long growing seasons, watermelon can take closer to 70 days to harvest.
In cooler regions, the same variety might take 100 days or more, especially if temperatures dip.
That’s why gardeners in short-season areas often choose early varieties to shorten the wait.
3. Growing Conditions Affect Harvest Time
Even with the right variety, how long watermelon takes to harvest depends on how well it’s grown.
Plenty of sunlight, consistent watering, and rich soil help watermelons mature on schedule.
Stress from drought, poor soil, or pests can delay harvest significantly.
So the better your growing conditions, the closer you’ll be to that ideal harvest window.
How to Tell When Watermelon Is Ready to Harvest
Counting days helps, but the best way to know how long watermelon takes to harvest is to watch for physical signs.
Watermelons give you several clues when they’re ready.
1. The Tendril Nearest the Fruit Turns Brown
Look for the curly tendril on the vine right next to where the watermelon is attached.
When that tendril dries up and turns brown, the watermelon is usually ready to harvest.
If it’s still green and lively, give it a few more days.
2. The Bottom Spot Turns Creamy Yellow
Flip the watermelon over and check the field spot, which is the patch where it rested on the ground.
A ripe watermelon will have a creamy yellow spot rather than a white or pale green one.
This is one of the most reliable signs that harvest time has arrived.
3. The Rind Loses Its Shine
A watermelon that’s ready to harvest often has a dull, matte rind instead of a shiny one.
The skin also becomes tougher and harder to scratch with your fingernail.
If the rind still looks glossy, it probably needs more time on the vine.
4. The Hollow Sound Test
Give the watermelon a firm tap and listen closely.
A ripe watermelon sounds hollow, like a deep thump rather than a dull thud.
This trick isn’t foolproof on its own, but it works great alongside the other signs.
Tips to Get Your Watermelon Harvest Timing Right
Getting the timing right for how long watermelon takes to harvest comes down to a few smart habits.
Plant at the right time, choose the right variety, and keep a close eye as harvest season approaches.
1. Track Your Planting Date
Write down the date you planted or transplanted your watermelons.
Then check the days to maturity on your seed packet and count forward.
This gives you a rough target for when watermelon harvest should begin.
2. Don’t Rush the Harvest
Watermelon won’t continue ripening much after it’s picked, so timing matters.
Picking too early means bland, less sweet fruit.
Wait until the signs are clear before you cut it from the vine.
3. Stop Watering About a Week Before Harvest
Cutting back on water as harvest approaches can boost sweetness.
Too much water near the end can dilute the sugars and even cause fruit to split.
So ease off the watering once you know harvest is close.
So, How Long Does Watermelon Take to Harvest?
Watermelon takes about 70 to 100 days to harvest, depending on variety, climate, and growing conditions.
Early varieties may be ready in as little as 65 days, while larger types can take 100 days or more.
Watch for brown tendrils, a creamy yellow field spot, and a hollow sound to know exactly when it’s time.
With a little patience and attention, you’ll pick watermelons at their peak sweetness.