By Julie Christensen
Seasoned vegetable gardeners are a bit like fishermen boasting about their catch. They gauge their success as gardeners by the size of the fruit in their watermelon patch. Growing watermelon in the home garden is a cinch — if you have the right conditions and you choose the best watermelon type.
Watermelons are native to Africa and thrive in warm, moist conditions. They need at least 90 sunny, warm days to mature, and large picnic types can take up to 130 days to ripen. This poses a problem for gardeners in the North, where a typical growing season may be only 80 days.
To combat a short growing season, Northern gardeners have to think strategically. Try planting seedlings, rather than seeds, and lay black plastic mulch over the soil two weeks before planting time. Black plastic mulch heats up the soil by 10 degrees so you can plant earlier. And, once you do plant, the tiny seedlings grow more quickly because they’re kept warm.
Don’t miss our watermelon nutritional information.
Watermelon needs full sun and rich soil to promote healthy leaf and vine development. Dig in several inches of compost or manure before planting, and fertilize watermelon after the plants start to flower. Keep soil evenly moist, but not soggy. Try using drip systems or soaker systems instead of overhead sprinklers. These methods deliver water right to the plants’ roots and reduce the chance of fungal diseases spread by wet leaves.
Most importantly, select varieties known to perform well in your region. For example, in the North, gardeners should plant smaller watermelon varieties, which ripen sooner than larger varieties. Below are a few of the best watermelon varieties to plant.
Mini Watermelons Varieties
Mini, or personal watermelons have become very popular in the grocery store. These watermelons are known for their sweetness and are the ideal size for a small family.
Belle 460
This mini watermelon takes 85 days to mature and produces 5-pound fruits. Belle 460 produces round fruit with deep red flesh. Fruit measures 9.5 on the Brix scale, which means it is sweet to very sweet.
Diana
For a change of pace, try this mini watermelon with a yellow rind. The fruit ripens in 87 days and produces very sweet, red flesh, measuring 10.3 on the Brix scale.
Gold Flower
Gold Flower ripens in 90 days and produces yellow fruit, which is very sweet. The average fruit size is around 5.9 pounds.
Wonder
This variety matures in 88 days and its fruit measures 9.9 on the Brix scale. Wonder watermelon are strikingly beautiful with their dark green, dull rinds, and deep red flesh offset by a very white inner rind.
Icebox Watermelon Varieties
Small icebox varieties are usually round and weigh around 10 pounds. They keep well and provide enough fruit for a larger family.
Boston
Boston matures in only 85 days, making it a good choice for Northern gardeners. The fruit measures 10.1 on the Brix scale. This is a classic watermelon variety with a green, striped rind and red flesh.
Golden Honey
Golden Honey produces orange-fleshed fruit within 93 days. The 10 pound fruits measure 9.2 on the Brix scale.
Poquito
Poquito is one of the best choices for short-season gardens. It matures in only 78 days and produces 10 pound fruits that measure 11.0 on the Brix scale.
White Wonder
White Wonder variety produces greenish white flesh, similar to a honeydew melon. The fruits mature in 93 days and weigh around 8.5 pounds.
Picnic Watermelon Varieties
These are the big boys of the watermelon fields, averaging between 10 and 15 pounds. As the name implies, they’re ideal for large gatherings, but are almost too big to store in the refrigerator. We’ve chosen picnic watermelon varieties that mature quickly while retaining great flavor.
Crimson Sweet
Crimson Sweet produces fruit averaging around 15 pounds. Fruit matures in 89 days and the red flesh measures around 9.9 on the Brix scale.
Harmony
Ideal for the Northern gardener, Harmony ripens in only 78 days, producing 12 pound fruits that measure 11.2 on the Brix scale.
Sultan
Sultan is one of the sweetest varieties you’ll find, this one measures 12.3 on the Brix scale. The fruits average 15 pounds and ripen within 95 days.
Seedless Watermelon Varieties
Seedless watermelon are hugely popular in grocery stores for obvious reasons — no mess. Many people think seeded watermelon actually taste better, though. If you want to grow seedless watermelon, buy nursery seedlings because the seeds are hard to germinate. Plant a seeded variety with your seedless watermelon to ensure pollination and fruit set.
Burpee Seedless Hybrid
One of the few seedless varieties available to home growers. This watermelon produces 8-pound fruit within 90 days.
Want to learn more about growing watermelons?
See these websites:
Watermelon Variety Descriptions at Washington State University
Growing Seedless Watermelon from the University of Nebraska–Lincoln Extension
Julie Christensen learned about gardening on her grandfather’s farm and mother’s vegetable garden in southern Idaho. Today, she lives and gardens on the high plains of Colorado. When she’s not digging in the dirt, Julie writes about food, education, parenting and gardening.Â
Mike Burkleo says
I planted planted watermelon a few years back , was the best watermelon I ever had , sweet and crispy all the way to the rind , really was good … it was elongated and striped , medium sized . I cannot remember the variety and I THOUGHT it was Crimson Sweet , but all the photos show those as more “roundish” , mine were elongated , looked like a smaller Black Diamond I suppose … Really good melon , CRISPY AND SWEET …. Can you help me figure out what it was ?? I can send photos if need be
Paula Macedonio says
might have been a charleston, we all call them the old fashioned watermelons cause before the new fangled varietys they were pretty much the only ones sold in the supermarkets they are oblong and can get huge but taste wonderful
Denise says
I am growing heirloom Charleston Grey and they are oblong. They get to be about 24in long and 10in wide and 30lbs
Steve Smith says
I grew jubilee last year and will be planting them this year. They’re not round, they grow about 16 inches and weigh about 25 pounds. I’ve ate a lot of watermelons in my life, but these are the best. Eat them ice cold.
Cissy Vaughn says
Where did you buy the seeds? If you bought the seeds at your local variety store then it’s likely just a widely available, common, OP, if you ordered it… another story. Sangria? Ali Baba? Legacy?
Patrick says
MIKE, I have had really good luck with crimson sweet. I am going to stick with them, I live in Northern Il.
Pilar says
This process gives the player a tough idea of just how many superior or minimal
cards come in the deck.
Mike Burkleo says
I do not remember the variety , and I did buy the seeds at some store like walmart or home depot …. this was years ago …. like a say , they were elongated , fairly large , light green with lighter green stripes , totally crispy and sweet all the way through to the rind , really good …. I have photos on my facebook page , Mike Burkleo
Mike Burkleo says
bought seeds at some store , walmart or home depot , have pictures on my facebook page MIKE BURKLEO
scott says
All these watermelons score pathetically on the Brix scale. Over the last century, watermelons have been bred for tougher rinds…for shipping purposes. All the sweet sugars have been diverted, to the part that isn’t eaten (the rind), and isn’t sweet anymore because the sugar was used to toughen the “shell”. If you want a real watermelon with a minimum 12.5 Brix rating, get yourself some Bradford watermelon seeds.
Leslie says
Thank for the info. I’ll be looking for these seeds online.
Donna kremmm says
How do I know when to pick a crimson sweet?
Gregory Brian Lane says
You can use two methods. 1st the leaves where the vine joins the melon will start to dry up at least 3 leaves from the melon. Next look at the lighter colored lines on the melon and when they start breaking up into two colors instead of a solid line get you knife and fork and some salt ready. Best when chilled. And thats my story.
Evelyn Takalo says
Hi there,
Am interested in, what do you do with knife, fork and salt?
Andrew says
Some people eat watermelon with salt. He’s saying if your melon is showing any of those signs. It’s time to cut from vine and eat.
Gregory Brian Lane says
You can use two methods. 1st the leaves where the vine joins the melon will start to dry up at least 3 leaves from the melon. Next look at the lighter colored lines on the melon and when they start breaking up into two colors instead of a solid line get you knife and fork and some salt ready. Best when chilled. And thats my story.
Denise says
I am growing heirloom Charleston Grey and they are oblong. They get to be about 24in long and 10in wide and 30lbs