How to Grow Cantaloupe in the Garden

Cucumis melo var. reticulatus

Cantaloupe is like candy in melon form.

For some reason, watermelon gets all the summertime hype. Some of that needs to go straight to cantaloupe, which in my unpopular opinion, is much tastier than watermelon.

A vertical close up of two cantaloupe melons growing in the garden, ripening on the vine, with foliage in soft focus in the background. To the center and bottom of the frame is green and white text.

With a strange texture, slimy seeds, and an abundance of, well, wateriness, the watermelon just isn’t my type of fruit. Cantaloupe, though, is one of my favorites.

A juicy American cantaloupe, that is, because I’ve never tried the European variety. There are differences, which we’ll talk about in a moment.

No melon can beat the sweet orange flesh of the cantaloupe. It’s intensely sweet, but healthy too, with robust levels of vitamins A and C, potassium, folate, and beta carotene.

A close up of a wooden bowl containing freshly harvested melons, one with a slice cut out of it and set on a rustic wooden surface with a garden scene in soft focus in the background.

Because I love cantaloupe so much, I decided to grow it here in Alaska. Seeing how this fruit thrives in balmy summertime climes, this is an audacious choice.

But I must have garden-grown cantaloupe.

Feel the same way? Read on!

Cultivation and History

This delicious fruit belongs to the genus Cucumis and is a member of the Cucurbitaceae, or gourd family.

Pumpkins, squash, honeydew, and zucchini are also star members. Grown as a summer annual in USDA Hardiness Zones 4-10, the fruit develops on a trailing vine, which can trained up a trellis to save space.

Most varieties mature in 65-90 days and produce round fruits that weigh up to 3-4 pounds.

A vertical close up of a cantaloupe melon sliced in half and into sections, set on a wooden chopping board on a soft focus background.

Cantaloupe melons are a variety of the muskmelon, C. melo, and the name “cantaloupe” refers specifically to the North American variety C. melo var. reticulatus, and the European type, C. melo var. cantalupensis.

This orange-fleshed fruit is known as rockmelon in Australia and New Zealand, and spanspek in South Africa.

Early versions of the melon originated in Persia, India, and the surrounding area, and then in the 1700s seeds from Armenia contributed to the cultivation of the European cantaloupe we know and love.

A close up of two cantaloupes ripening on the vine in the garden surrounded by foliage and pictured in light filtered sunshine.

The name came from one of the first places to grow this version, Cantalupo, a town near Rome where the Pope enjoyed a villa retreat.

As for the North American variety, Columbus brought seeds of early cultivars on his 1494 voyage to the new world, and introduced them to the Americas.

A close up top down picture of a ripe cantaloupe melon prepared in two different ways: cut into slices and set on a blue plate, and to the left it is cubed, and set in a blue bowl with a sprig of mint to garnish.

In 1881, the W. Atlee Burpee company cultivated the North American variety as we know it today, calling it the “Netted Gem,” for its webbed skin and deliciously sweet fruit.

In their 1896 book, “Vegetables for the Home Garden,” available at Amazon, the author writes, “Burpee’s Netted Gem was first named and introduced by us 15 years ago. In shape this melon is almost a perfect globe, with green skin, regularly ribbed, and thickly netted.”

Vegetables for the Home Garden

A nice blast from the past that first sentence is!

Today, people all over the world favor cantaloupe over watermelon – oh wait, maybe that’s just me! – and use it in fruit salads, wrap it in prosciutto for a popular antipasti, and eat it on the rind for a delicious summertime snack. You can also roast and snack on the seeds.

Propagation

You can start this fruit from seed indoors or outdoors, or from seedlings purchased at a garden center.

In the north, with the shorter growing season, it’s an ideal summer crop as long as it’s got some help to stay warm.

Southern states can grow the melon earlier in the spring or even during the fall in some areas.

From Seed

Those of you who live in colder climates, like I do, should sow seeds indoors at least four weeks before your average last frost date.

Since melons require a long growing season, and take time to ripen, a head start like this helps guarantee that you’ll get to harvest your melons before fall frosts kill the plants.

A close up of a ripe cantaloupe melon growing on the vine with foliage and filtered sunshine in soft focus in the background.

In warmer climates, you can sow seeds directly outdoors as soon as all danger of frost has passed.

In somewhere like Florida, plant as early as February or March. Those in Zones 9, 10, and 11 can even sow seeds in the fall for a winter crop.

Most cantaloupe cultivars take between 65-90 days from germination to reach maturity, so let that be your guide.

To sow in seed trays, add a good quality potting mix to each cell and then use your finger to make a 1/2-inch-deep hole in each one.

Add two to three seeds per hole, and make sure you place the pointy end of the seeds down.

A close up of Cucumis melo var. reticulatus seeds set on a gray surface.

The roots emerge from the point, and while they may still germinate if you place them rounded-side-down, the seedling will have to work that much harder to figure out which way is up and which is down.

Trust me on this one. Embarrassingly, I learned this lesson the hard way.

Tamp the soil back over the seed and give it a nice misting with a spray bottle or a gentle watering with a watering can.

If your seed trays come with a lid, that’s helpful as it helps to trap in moisture, resulting in the perfect humidity for germination.

You can also use a layer of plastic wrap to achieve a similar effect, but be sure to remove it as soon as seeds germinate.

A close up of a seedling tray with a plastic humidity cover for germinating seeds.
Photo by Laura Melchor.

Germination usually takes about a week, sometimes longer if soil conditions aren’t quite at 70°F. You can use heat mat to ensure the soil stays at a consistent 70°F – the ideal temperature for germination.

Make sure to keep that spray bottle nearby – cantaloupe seedlings need constant moisture in the early days.

A few days after germination, thin to one seedling per cell, keeping the one that looks the strongest.

A close up of a seedling tray with recently germinated sprouts, set on a windowsill.
Photo by Laura Melchor.

Keep your seed trays near a sunny window or place them under a grow light.

Once they’ve got two or three sets of true leaves, you’ll need to harden them off for 7-10 days before transplanting outdoors.

A quick note: sometimes the seed casings won’t come off the seedling immediately it pushes out of the earth, especially if you accidentally plant the seedlings the wrong way up.

A close up of a recently germinated seed showing the seed casing still attached to the young sprout.
Photo by Laura Melchor.

If these casings don’t fall off within a couple days, gently tug them off with your fingers. Leaving them on can inhibit the plant’s growth.

Those of you living in warmer climates can direct sow outdoors in full sun as soon as the danger of frost has passed.

To sow outdoors, plant three seeds in 1/2-inch-deep holes,  18-24 inches apart. Keep them evenly moist until germination.

Once seedlings have two sets of true leaves, thin them so that there’s only one plant every 18-24 inches.

From Seedlings and Transplanting

Did you pick up a tray of starts at your local nursery? Or are your seedlings big enough to transplant out? Here’s how to make sure they settle nicely into your garden.

A close up of young Cucumis melo var. reticulatus seedlings growing in small white plastic bags set on a gravel surface, with an irrigation system for watering.

Pick a sunny spot for planting, as melons need eight to ten hours of full sun in order to thrive.

You’ll first need to make sure that the soil in your raised beds or old-fashioned row garden is loose, well-draining, and ready for the melons.

I like to amend garden soil with well-rotted manure and compost, or with a nutrient-rich raised bed soil like this one from the Home Depot.A close up of the packaging of a soil amendment made for raised bed gardens, on a white background.

Raised Bed Recharge

Next, dig a hole the size of the root ball, place the plant inside the hole, backfill with soil, and water thoroughly. Space each plant 18-24 inches apart.

How to Grow

Cantaloupes grow best in organically rich, well-draining soil, with a mildly acidic pH of 6.0-6.5. You can conduct a soil test and amend accordingly.

While cantaloupes love warmth, they don’t love too much of it. If the temperatures rise above 95-100°F or so for several days in a row, your plant might get cranky and let its flowers fall.

A close up of a Cucumis melo var. reticulatus ripening on the vine, set on a straw mulch, with foliage in the background, pictured in bright sunshine.

To help keep the plant happy during heat waves, mulch with straw or other light-colored material to keep the roots cool.

As for those of us in colder climes, we’ll need to do everything in our power to keep our melons warm.

First, avoid setting plants out until the soil temperature is a reliable 70°F. Using raised beds for cantaloupes helps, because the soil in raised beds and containers often thaws earlier than the ground.

Another important step? Mulch with black landscaping fabric, or dark-colored bark chips. Only use dark mulch in colder growing zones, though, or the plants may overheat.

A close up of a young melon plant growing in bright sunshine surrounded by black landscape fabric.

For extra warmth, you can insert hoops and floating row covers over your garden to act as a greenhouse during the early days of growth.

You’ll want to remove the cover as soon as outdoor temperatures remain above 50°F at night, especially as your cantaloupe begins to flower – usually about 30-40 days after germination.

The row covers can keep out bees and other pollinators needed to make that delicious fruit.

A close up of a bright yellow cantaloupe flower contrasting with the light green foliage on a soft focus background.

Another important component of a happy cantaloupe is to keep it well watered, especially in the growing and flowering stages.

During this stage of its growth, it’ll need 1-2 inches of water per week. Avoid watering from above to prevent the leaves getting wet and potentially spreading disease.

To check soil moisture, stick your finger an inch down into the soil. If it feels dry, it’s time to add water.

A close up of an unripe cantaloupe melon growing on the vine, covered in water droplets with foliage in soft focus in the background.

But once the vines have set fruit, it’s time to scale back the watering a bit to just 1 inch per week.

As the melons get closer to maturation, provide just 1/2 an inch of water a week. Too much water at this point can cause the rinds to swell and split.

Cantaloupe vines spread wide and thick, so if you’ve got limited space, use a plant support to encourage them to grow upwards.

A tomato cage can work, as can a trellis, a simple tent made of four bamboo poles tied together at the top, or a vertical growing frame like this one from the Home Depot.

A vertical close up picture of cantaloupes ripening on the vine, supported by nets to prevent the fruits from falling off prematurely.

Just be sure to provide support for the hanging melons once they’re about the size of a fist.

Use old pantyhose if you have some on hand, or netted, stretchy produce bags, like these ones available from Amazon.

Support Bags for Growing Melons

Make sure that the material you use is breathable. You don’t want to accidentally rot the melons by sticking them in a plastic bag.

Simply put the net around the melon and tie it to the trellis, frame, or pole. As the melon grows, the sling will expand and support it so that it does not break the vine.

Also, remember to trim the vines to encourage the plant to focus its energy on making big, juicy melons.

A close up of a cantaloupe melon ripe and ready for harvest, on the ground in the garden, surrounded by foliage, pictured in bright sunshine on a soft focus background.

Like strawberries, melons send out runners.

To grow large melons, trim each plant at the leaf node just past the one bearing the fruit and consider only keeping two to three fruits on each plant.

The plant will then put all of its energy into growing those fruits to a nice, large size.

But if you don’t mind smaller melons and want a fuller crop, you can let the vines grow as they will and only trim them back if they are spilling over the edge of your raised bed or encroaching on other plants.

As frosty fall weather approaches and your melons begin ripening, pinch off any new flowers to allow the energy to focus on ripening existing fruit.

Growing Tips

  • Make sure to plant in organically rich soil
  • Keep melons warm in cold weather and help them stay cool if temps rise above 95°F-100°F.
  • Provide 1-2 inches of water per week until fruit appears, and then scale it back to 1 inch and then 1/2 inch about a week before harvest.
  • Trim to just 2-3 melons per plant for large fruit or not at all for lots of smaller fruits.

Cultivars to Select

Here are my favorite cantaloupe varieties for your home garden:

Hearts of Gold

This sweet, medium-sized cantaloupe grows well in Zones 3-10, which is why I chose it for my Alaska garden. Back in the 1900s, when it was cultivated, this was the most popular commercial melon in the United States.

It’ll mature within 80-90 days and weigh in at two to three pounds. Vines will spread up to 72 inches and grow 15-18 inches tall.

A close up of 'Hearts of Gold' melon set on a white plate with slices in front and to the sides.

‘Hearts of Gold’

With just a touch of ribbing and a thin, netted rind, this is a classic cultivar to suit those of us who adore super-sweet melons. Plus, they’re resistant to one of cantaloupe’s most prolific diseases: powdery mildew.

Find packets of 50 seeds at Burpee or up to one pound of seeds at True Leaf Market.

Honey Rock

For a big, 3- to 4-pound beauty with sweet, rich flesh, try ‘Honey Rock,’ an heirloom cultivar that matures in 75-90 days.

Hardy to Zones 4-11, these delicious melons were winners of the All-American Selection Gold Medal in 1933, for their robust size and sweet flavor.

A close up of a 'Honey Rock' sliced in half and set on a rustic wooden surface.

‘Honey Rock’

Find anything from a small packet to a five-pound sack of seeds at Eden Brothers.

Minnesota Midget

Perfect for those in cold climes – or for container growing – ‘Minnesota Midget’ (C. melo var. cantalupensis) matures in just 65 days and is hardy to Zones 3-10.

Introduced by the University of Minnesota in 1948, the vines produce sweet, juicy, four-inch fruits and plants are resistant to fusarium wilt.

A close up of a 'Minnesota Midget' cut in half, set amongst foliage in bright sunshine. To the bottom right of the frame is a white circular logo and text.

‘Minnesota Midget’

Unlike other varieties, the vines only spread up to three feet. Each plant can produce anywhere from four to eight delicious melons.

Find seeds today in 1 ounce, 4 ounce, and 1-pound packages at True Leaf Market.

Managing Pests and Disease

Cantaloupe isn’t terribly susceptible to pests and disease, but there are a few different critters and maladies to watch out for.

Let’s take a look.

Insects

Which bugs bother cantaloupes the most? These four pesky creatures.

Aphids

Because of course.

What leafy thing is immune from this persistent pest? Not just any aphids love this melon, though: peach aphids (Myzus persicae), which are green to yellowish-brown, and melon aphids (Aphis gossypii), which are creamy white.

A close up of aphids on a Cucumis melo var. reticulatus leaf.

While small, they’re easily visible on leaves upon close inspection. Aphids suck the sap out of the leaves, causing them to turn yellow or stop growing. They also contribute to the spread of mosaic virus.

If your outbreak is limited to a few sturdy vines, you can hose the bugs off with water and sprinkle diatomaceous earth atop the fallen pests, and on the soil around your plants.

Alternatively, spray the plant with neem oil or insecticidal soap – or make your cantaloupe patch a happy home for ladybugs, a beneficial insect that eats aphids.

Cucumber Beetles

These rather beautiful beetles come in three pertinent forms: the Western striped cucumber beetle (Acalymma vittata), the Western spotted cucumber beetle (Diabrotica undecimpunctata), and the banded cucumber beetle (Diabrotica balteata).

These brightly colored bugs can damage vines and leaves and contribute to bacterial rot. They also munch on the fruit and leave behind ugly scars.

The best way to manage them is to apply kaolin clay or neem oil to the affected areas (and catch them early before they spread!).

Cutworms

These plump, segmented, brown worms (I’m shuddering as I write this) can kill cantaloupe seedlings and eat holes through the melons. Not cool!

Cutworms, Peridroma saucia, are most active at night, and in the daytime these 1-2-inch beasties curl up and hide in the soil at the base of the plant. They know they’re not welcome.

A close up of a hand from the left of the frame holding four small cucumber beetles, on a soft focus background.

To control them, hand-pick them off your plants at night (fun, fun!) or spread diatomaceous earth all around the base of the plant.

You can also try spraying neem oil or insecticidal soap on the affected areas.

Squash Bug

The most dreaded pest to melon-growers around the world, the squash bug (Anasa trisis) feeds on the leaves, turning them speckled and brown, and causes vines to wilt and even die. It also kills otherwise healthy, ripening fruit.

Nymphs are greenish with black legs; adults are gray-black-brownish.

Diatomaceous earth can help kill or slow the spread of these devastating bugs, but some determined gardeners actually use a wet-dry vacuum to suck them off the vines, leaves, and fruits.

Cantaloupes grown on a fence or trellis can sometimes escape infestation, so that’s something to consider.

Disease

Check your plants daily to make sure they aren’t developing symptoms of any of these five common cantaloupe maladies.

Alternaria Leaf Blight

If you live in a hot, humid, rainy area, watch out for Alternaria leaf blight caused by Alternaria cucumerina. This fungal infection begins as small yellow-brown spots on the oldest leaves and spreads to new growth.

A close up of a diseased leaf with yellow and brown sections, pictured on a soft focus background.

It can also infect the fruit, causing it to crack.

To prevent this unpleasant fungus, avoid overhead watering and consider covering your crops with rainproof tarp if wet conditions last longer than a couple days. Use fungicide on affected plants.

Downy Mildew

This pesky fungal disease is caused by Pseudoperonospora cubensis. Brown spots appear on leaves, eventually killing them.

A close up vertical picture of a green leaf suffering with a fungal infection that has made yellow spots appear on the surface, pictured on a soft focus background.

Avoid overhead irrigation and treat with fungicide when needed.

Fusarium Wilt

Fusarium wilt is caused by a soil-borne fungus, Fusarium oxysporum, that will cause the runners to turn yellow and wilt and weakens the overall health of the plant.

A close up of the foliage of Cucumis melo var. reticulatus with unripe fruits in dry soil, and some yellowing leaves.

To avoid it, rotate all Cucurbitaceae crops every four years and keep the soil moist but not waterlogged. If needed, apply fungicide.

Mosaic Viruses

One of the main reasons to keep aphids out of your garden is that they spread mosaic virus. The types that damage cantaloupe are: cucumber mosaic, squash mosaic, watermelon mosaic, and zucchini yellow mosaic.

These viruses cause a yellow pattern on leaves, killing them, and can even stunt and deform fruit. Buying mosaic-resistant seeds is ideal if these viruses are a known problem in your area. They spread very quickly, devastating entire crops, and there’s little to be done once that happens.

Powdery Mildew

This common disease, powdery mildew, caused by Podosphaera xanthii, promotes the spread of white fungus all over your leaves.

While it rarely kills plants, it looks unsightly and can alter the flavor of the fruit because it doesn’t allow it to ripen fully.

A close up of a bright yellow cantaloupe melon flower with wilting foliage, pictured in light sunshine on a soft focus background.

To prevent powdery mildew, make sure you sanitize your gardening tools before using them to plant melons.

Also, make sure to allow for air circulation if you’re growing them in a partially enclosed space, like under floating row covers.

Harvesting

There are three main things to look for when you’re thinking about harvesting your hard-won melons.

A ripe cantaloupe melon attached to the vine on the ground in the garden on a soft focus background.

First, watch the color. Is it turning from white to a peachy-gold, yellow, or cream color? If so, it’s probably ready for harvest.

Second, get up close and personal to the melon and take a sniff where the vine meets the fruit. Does it smell sweet? If so, it’s picking time!

A close up of two hands from the right of the frame gripping a Cucumis melo var. reticulatus fruit, still attached to the vine, with foliage in soft focus in the background.

And third, while you’re sniffing away, check the attachment between the stem and the melon.

If you see a slight gap where the melon is beginning to pull away from the vine, this is a good indicator that you can grasp it with both hands and gently tug.

A close up of a hand from the left of the frame grasping a cantaloupe melon to check if it is harvest ready. In the background are further fruits and foliage of the vine.

A ripe melon will come away with ease.

Once harvested, take your melon indoors and out of the sun to prevent water loss and over-ripening.

Read our full guide on cantaloupe harvesting here.

Preserving

Let’s be real: cantaloupes are best enjoyed fresh off the vine. After you thoroughly scrub the rind with soap and warm water to remove bacteria, which can contaminate the flesh when you cut into it.

To do this, take a clean vegetable brush and clean the whole of the outside of the melon under running water. Before slicing, dry with paper towels to remove excess water.

A close up of a ripe melon with slices set on a wooden chopping board on a soft focus background.

You can store unwashed, uncut melons in the refrigerator for up to one week, and seal cut melon in a plastic bag and store for three days.

The other option is to cut the cantaloupe into cubes or balls, layer it on wax paper and freeze.

After two to three hours, put the cubes in resealable containers or bags and keep them in the freezer.

Use cubes while still frosty, whether you toss them into a smoothie or eat them fresh out of the freezer like a little dollop of ice cream.

A close up of a cantaloupe made into circular balls set in a green bowl with mint as a garnish on a soft focus background.

Try sprinkling sugar on the cubes before freezing for an extra-sweet treat. Use your frozen cantaloupe within one month for best results.

As for any other methods of preservation, those are pretty much nonexistent.

According to Tracy L. Parnell, Trevor Suslow, and Linda J. Harris, food scientists at the University of California, it’s unsafe to can the melon due to a high risk of botulism, and unpleasant to attempt to dry it.

Recipes and Cooking Ideas

For tips on how to properly cut cantaloupe, check out this article from our sister site, Foodal. It’ll tell you everything you need to know!

A close up of a ripe melon with a slice cut out of it, set on a wooden surface in the garden, on a soft focus background.

You can add fresh or frozen cantaloupe to smoothies or eat it as is. Combine with other fruits for a tasty salad, or eat it fresh with a touch of mint.

And remember those frozen cubes of cantaloupe? Try making this watermelon daiquiri recipe, also from Foodal, but use cantaloupe instead of watermelon.

Quick Reference Growing Guide

Everyone’s Favorite Melon

Okay, maybe it’s not everyone’s favorite, but it sure is mine, and I can’t wait to see my plump melons thrive in the garden.

A close up of a cantaloupe ripening on the vine in the garden, surrounded by foliage on a dark background.

Have you ever grown cantaloupes? Did they thrive or just barely survive? Let us know in the comments below!

If you’d like to add other summer fruits to your garden, check out these articles next:


Don’t forget to Pin It!

A collage of photos showing cantaloupe growing on the vine and cut open showing its orange fleshy interior.

Photos by Laura Melchor © Ask the Experts, LLC. ALL RIGHTS RESERVED. See our TOS for more details. Product photos via Amazon, Burpee, Eden Brothers, Hardpress Publishing, Home Depot, and True Leaf Market. Uncredited photos: Shutterstock.

About Laura Melchor

Laura Melchor grew up helping her mom in the garden in Montana, and as an adult she’s brought her cold-weather gardening skills with her to her home in Alaska. She’s especially proud of the flowerbeds she and her three-year-old son built with rocks dug up from their little Alaska homestead. As a freelance writer, she contributes to several websites and blogs across the web. Laura also writes novels and holds an MFA in writing from Vermont College of Fine Arts.

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Betty
Betty (@guest_7586)
5 days ago

Hi! I’m a first time cantaloupe grower, I’m doing it in a greenhouse. What I’m wondering is what fertilizer should I use and when… my plants have reasonably good well draining soil, my greenhouse stays below 30c and above 25c, but my plants look anaemic and aren’t thriving like my tomatoes and cucumbers are. I live in northern B.C.,

Thank you!