Vegetable · Cucurbitaceae
Honeydew Melon
Cucumis melo
Give it full sun, warm soil, and a long season, and the honeydew rewards you with sweet, cooling fruit by late summer.
Full sun
Every 7–10 days
70–90°F · 21–32°C
80–110 days
Overview
Honeydew is the smooth, pale melon of late summer, the one with creamy skin and sweet green flesh. It's a warm-season vine in the gourd family, the same species as cantaloupe but a world apart in the eating. Where a cantaloupe is netted and musky, a honeydew is waxy-smooth and clean-tasting.
Two things set honeydew apart in the garden. It needs a long, warm season of 80 to 110 days to sweeten fully, and it never slips free of the vine the way a cantaloupe does. That second point trips up new growers, who wait for the fruit to drop and end up harvesting too late. You judge ripeness by the rind turning creamy and the blossom end giving slightly under a thumb.
None of this makes honeydew hard, but it does ask for patience and steady conditions. Give the vines room to sprawl, deep but infrequent water, and a bright open spot where air moves freely. Crowd them or keep the leaves wet and you invite the mildews and wilts that cut a melon crop short.
Care
The short version: full sun and warm, fertile, well-drained soil, with deep watering of about 1 to 2 inches a week that you cut back in the final week so the sugars concentrate. Give each plant plenty of room and a long, warm season to ripen.
Light
Honeydew wants full sun, the more direct hours the better. Sun is what builds the sugars, so a shaded plant gives you watery, flavorless fruit even when everything else goes right.
Water
Water deeply but not often, around 1 to 2 inches a week, letting the soil dry a little between drinks rather than keeping it soggy. The one trick that matters most comes at the end: cut back water in the last week before harvest, because a late soaking dilutes the sugars and flattens the flavor.
Soil
Plant in fertile, well-drained sandy loam with plenty of organic matter worked in. A slightly acidic pH of 6.0 to 6.5 suits honeydew, and good drainage keeps the roots and crown clear of the rots that thrive in heavy, wet ground.
Temperature
Honeydew grows best in real warmth, between 70°F and 90°F (21°C to 32°C). It won't tolerate frost at either end of the season, and cool, cloudy stretches stall ripening and leave the fruit bland.
Humidity
Ordinary outdoor humidity is fine, so there's no figure to aim for. What counts far more is airflow, since still, damp air around crowded leaves is exactly what powdery and downy mildew need to take hold.
Feeding
Work a balanced fertilizer such as 5-10-10 into the bed before planting, then side-dress with a nitrogen feed like 21-0-0 once the vines start to run. Steady feeding through that vining stage sets up a strong plant to carry the fruit.
Pruning
Honeydew isn't really pruned. You can pinch back the vine tips to keep a sprawling plant within its bed, and in a short season it helps to remove the very late blossoms so the plant pours its energy into ripening the melons already set.
Repotting
There's no repotting here, since honeydew grows as an annual that's direct-sown or transplanted just once. If you start seeds early, sow them in biodegradable pots and plant the whole pot out, because the roots resent any disturbance.
Size & spacing
Vines sprawl 6 to 9 feet (183 to 274 cm) long, so give them room to run. Set plants 18 to 24 inches (45 to 60 cm) apart and leave wide aisles between rows for the runners and for air to move through.
When to plant
Honeydew has no tolerance for cold and needs a long run of warmth to sweeten. Start seeds indoors a few weeks before the last frost, set the plants out only once the soil has warmed, and harvest from late summer into early fall as the rinds turn creamy.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: start in biodegradable pots 2 to 4 weeks before the last frost; melons resent root disturbance
- Plant: transplant or direct-sow after frost once soil is 60 to 70°F (16 to 21°C)
- Harvest: harvested late summer into early fall when the rind turns creamy and the blossom end softens
Hardiness
USDA hardiness zones: 3–11
Temperature: down to -40°C
Troubleshooting
Most honeydew trouble shows up on the leaves and vines first, with the occasional disappointment waiting in the fruit at harvest. Catch the early signs and you can step in before a fungus or a beetle takes the whole crop. Match what you see below, then act while it still counts.
Vines wilting and collapsing in moist soil
When a vine flags despite plenty of water, suspect bacterial wilt, which cucumber beetles carry from plant to plant. Confirm it by cutting a wilted stem and slowly pulling the cut ends apart, watching for sticky white strands. There's no saving an infected vine, so pull it, destroy it, and get the beetles under control before they spread it further.
Fix:
- Remove and destroy infected vines
- Control cucumber beetles promptly
Runners yellowing and dying off one side at a time
This one-sided decline is the mark of Fusarium wilt, a soil fungus that clogs the vine from within. Split a wilting stem and you'll see brown streaks in the tissue. There's no cure, so remove the plant without composting it, and next time choose resistant cultivars and rotate the bed for 3 to 4 years.
Fix:
- Remove affected plants; there is no cure
- Do not compost diseased vines
Sunken stem cankers weeping amber gum
Reddish, gummy ooze on the stems points to gummy stem blight, a warm, wet-weather fungus that also rots the fruit. Look for tan leaf spots and tiny black specks in the tissue to confirm it. Cut out and destroy the infected vines, treat with a labeled fungicide, and rotate well away from cucumbers and squash.
Fix:
- Remove and destroy infected vines and debris
- Apply a labeled fungicide
- Rotate away from cucurbits
White, dusty patches spreading over the leaves
This is powdery mildew, a fungus that takes hold when warm air sits still around crowded foliage. Space the vines so air can move through them, strip off the worst leaves, and reach for a labeled fungicide only if it keeps climbing.
Fix:
- Improve spacing and air flow
- Remove badly infected leaves
- Apply a labeled fungicide if severe
Yellow patches boxed in by the leaf veins
Those sharp-edged blotches are downy mildew, which thrives in cool, wet, humid spells. Flip a leaf and you'll often find gray to purple fuzz on the underside. Water early in the day so the leaves dry fast, open the planting up for airflow, and treat with a labeled fungicide if it spreads.
Fix:
- Improve airflow and drainage
- Water early so leaves dry fast
- Apply a labeled fungicide if severe
Chewed leaves and blossoms with beetles on them
The culprits are cucumber beetles, yellow with either black stripes or spots, and the bigger danger is the bacterial wilt they carry. Cover young plants with floating row covers until they bloom, hand-pick the beetles you find, and turn to a labeled insecticide only when they swarm.
Fix:
- Cover young plants with floating row covers until bloom
- Hand-pick beetles
- Apply a labeled insecticide if numerous
Curled leaves coated in sticky residue and black mold
Melon aphids cluster on the undersides of leaves, sucking sap and leaving behind a sticky film that turns black with sooty mold. Blast them off with a strong jet of water first, follow up with insecticidal soap if they persist, and welcome the lady beetles and lacewings that hunt them. Keeping ants in check helps, since ants protect aphids for their honeydew.
Fix:
- Spray plants with a strong jet of water
- Apply insecticidal soap
- Encourage lady beetles and lacewings
Melon turns out bland and never sweetens up
A flat-tasting honeydew almost always means it came off the vine too soon. Wait until the rind turns creamy and the blossom end gives a little under your thumb, since honeydews don't slip free like cantaloupes. Ease off the water in the final week before harvest too, because a heavy drink late on dilutes the sugars.
Fix:
- Leave fruit on the vine until the rind turns creamy and the blossom end gives slightly
- Reduce watering during the last week before harvest
Toxicity
Good news for households with pets: every part of the honeydew plant is non-toxic, and the ripe flesh is a safe, refreshing treat to share. The only real cautions are common sense ones, since the tough rind and seeds are hard to digest and best kept off the menu for animals.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
A small bite of ripe flesh is harmless. The most you'll see from too much is a bit of loose stool, since cats don't handle much fruit sugar.
Dogs None
Ripe honeydew makes a fine occasional treat. Keep portions small, because a big helping of the sweet flesh can bring on mild stomach upset.
Horses None
Horses can have a slice of the flesh with no trouble at all. Skip the rind, which is tough and easy to choke on.
Rabbits None
The flesh is safe in tiny amounts, though it's rich and sugary for a rabbit. A thumbnail-sized piece now and then is plenty.
Livestock None
Goats, sheep, and cattle can eat melon scraps without harm and often enjoy them. The vines and leaves carry nothing toxic either.
Birds None
Chickens and other backyard birds happily pick at ripe honeydew and the seeds. There's no toxin to worry about in any part of the plant.
People None
Ripe honeydew is a sweet, refreshing fruit eaten the world over and safe for everyone, children included.
Offer only small amounts of ripe, seeded flesh; rind and seeds are tough to digest and can cause stomach upset or choking.
Varieties
Honeydew varieties mostly sort themselves by how fast they ripen and what color the flesh is. These are the ones worth knowing when you pick seed.
Honey Dew (Green Flesh)
This is the classic winter melon, with a smooth, waxy rind that ripens from cream to pale green over sweet, pale green flesh, and it stays firmly attached rather than slipping from the vine.
Earlidew
A green-fleshed honeydew that ripens fast, which makes it a smart pick where the growing season runs short.
Temptation
An early hybrid bred to sweeten quickly in cooler, shorter-season gardens that would otherwise leave a honeydew bland.
Orange-fleshed honeydew
It wears the same smooth pale rind as a green honeydew but hides salmon-orange flesh inside.
How to propagate
Honeydew comes from seed and little else, so the whole job is sowing at the right time and treating the tender roots with care.
SeedEasy
Start indoors 2 to 4 weeks before the last frost, or direct-sow after soil reaches 60 to 70°F (16 to 21°C) · Germinates in about 4 to 10 days at 70 to 90°F (21 to 32°C)
Seed is really the only way to grow honeydew. Start it indoors 2 to 4 weeks before your last frost, or direct-sow once the soil holds at 60°F to 70°F (16°C to 21°C), and in warm ground the seeds sprout in 4 to 10 days. Sow into biodegradable pots and set the whole pot in the ground, since melons hate having their roots disturbed.
Myths
A ripe honeydew slips off the vine like a cantaloupe.
Honeydews don't slip. The fruit stays firmly attached and has to be cut from the vine, so waiting for it to drop off only leaves you with overripe melon. Judge it ready when the rind turns creamy and the blossom end softens.
Watering heavily right before harvest makes melons sweeter.
It does the opposite. A flood of water in the last week of ripening dilutes the fruit and washes out the sweetness. The sugars come from full ripening and sun, which is why you ease back on watering as harvest nears.
A honeydew is just a kind of cantaloupe.
Both are the same species, Cucumis melo, but they sit in different groups. Honeydew is a smooth-skinned winter melon in the Inodorus group, while cantaloupe and muskmelon wear the netted rind of the Reticulatus group, and the two ripen and come off the vine in their own ways.