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

30 Jan 15, Mohamed (South Africa - Semi-arid climate)
Good day I would like to know where to purchase watermellon seeds from South Africa. I used To buy for Mozambique but now in Saudia Arabia .i know that South African seeds are good . Thank you
18 Aug 14, mart (Australia - tropical climate)
I'm growing champagne watermelons, with the fruit now at the size of a baseball, but the leaves are starting to wilt and as its a sandy area and the ground seems to stay wet, I'm wondering if it's to wet.
23 Jun 14, tony davoren (Australia - tropical climate)
What diseases are prevalent in melons in the katherine area northern territory and how do you test for them ?
28 May 14, joe (South Africa - Dry summer sub-tropical climate)
I would like to plant watermelons early July in the Limpopo valley can I do it , for the temp is around 19-28 ? Should I plant this directly or start by planting in seed trays ?
05 Jan 15, Pieter (South Africa - Dry summer sub-tropical climate)
Hi Joe, early Jul is a bit risky as you can still get black frost. Farmers around Lephalale push the planting date - Sometimes they're lucky.... delivering season first watermelon....
18 Apr 14, (USA - Zone 8b climate)
What kind of watermelon should i plant Ib 8 b
03 Apr 14, Michelle (Australia - temperate climate)
Have grown pumkin an watermelon from seeds that have grown into nice size plants, my problem now is we are in autum, an I don't want to lose the plants, the watermelon has fruit growing now, any advise would be very much appreciated , as I am just learning, also can they be grown together as in a big area,?
13 Jun 14, Shaz (Australia - tropical climate)
We planted our late summer and thought was a mistake, they soon flourished and we have just picked our first one ( June) Tastes great , live in qld
25 Jul 15, Ahmad (Australia - sub-tropical climate)
Hi Shaz Good to hear about your watermelons. I did the same thing last year. However, they grew upto a size of a tennis ball and then went yellow and died. This happened to atleast 5 to 6 watermelons. Then i gave up. Can you please advise me what different did you do different? Do watermelon plants require support (above from ground). My plants and melons were on the ground. Thanks Ahmad
24 Aug 15, Jacque Greenhalgh (Australia - tropical climate)
Hello Ahmad, I was reading through some questions when I came cross yours. I've been having this issue on and off for years now, involving cucumbers. They all are great healthy looking vines but what I have noticed is there is NO BEES! Cucumber, pumpkin, watermelons, mangoes, tomatoes and the list just goes on. What you will find is because on the lack of bees your flowers aren't getting pollinated you either need to invest in a few hives or start pollinating by hand. Try one vine by hand and let me know how you go
Showing 241 - 250 of 353 comments

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

- Tracy smith

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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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