Growing Watermelon

Cucurbitaceae c. lanatus : Cucurbitaceae / the gourd family

Jan F M A M J J A S O N Dec
      S S              
        T T            
        P P            

(Best months for growing Watermelon in USA - Zone 5a regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • P = Sow seed
  • Grow in seed trays, and plant out in 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 70°F and 95°F. (Show °C/cm)
  • Space plants: 24 - 30 inches apart
  • Harvest in 12-17 weeks.
  • Compatible with (can grow beside): Sweetcorn, Sunflowers
  • Avoid growing close to: Potatoes

Your comments and tips

25 Oct 18, Mike (New Zealand - temperate climate)
Have a go. Probably need plenty of water later. If not very successful, plant earlier next year - early Sept.
22 Oct 18, Tracy smith (New Zealand - temperate climate)
I have done watermelon seeds in September month & they have come up & r doing well so har. When is the best time to plant them in the ground they r about 1 inch high each I have 4 of them
23 Oct 18, Mike (New Zealand - temperate climate)
When they have produced a good root system. Wait until they have several leaves. Important to keep as much soil in contact with the roots as possible when planting out. Try and protect them from the sun for the first week. In future plant in a little pot like a 500 gm margarine container with a few holes in the bottom to let water drain out. When they are about 3-4 weeks old plant out. If no frosts you can plant directly into the soil.
11 Oct 18, Jo (New Zealand - temperate climate)
Planted watermelon seeds late last summer,didnt grow. Now they are sprouting but stem red colour after second leaf. Is this normal?
12 Oct 18, Mike (Australia - sub-tropical climate)
Best tasting melons are grown in the spring here. I don't know about the red stem stuff. They will start picking them here in about a months time. I LOVE EM.
03 Oct 18, Benjamin Gabokhutle (South Africa - Summer rainfall climate)
I am interested in farming and just finish cultivation of the field. I am wondering if I can plant Watermelon here, at the south Coast if Kzn, the soil is clay. Soil so I am not sure what type of soil to plant Watermelon, One other thing peanuts can I also plant them this season.
03 Oct 18, Liz (New Zealand - temperate climate)
Please note : "Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. "
02 Sep 18, Murray freeman (Canada - Zone 6a Temperate Warm Summer climate)
What are sweetest watermelon that can be grown in 6a
18 Aug 18, Tammy (USA - Zone 10a climate)
What are the best garden layouts for melons tomatoes, cucumbers and peppers? Not sure what can grow next to what best
30 Apr 18, Sandy (New Zealand - sub-tropical climate)
I sowed my watermelon in mid summer and it's still growing. I'm wondering if it will actually fruit in Auckland this time of year. Should I leave it or remove and try again next summer?
Showing 161 - 170 of 350 comments

I have a similar problem were the fruit has got to a certain size and then stopped growing ?

- mark

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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