Growing Watermelon

Cucurbitaceae c. lanatus : Cucurbitaceae / the gourd family

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

(Best months for growing Watermelon in New Zealand - cool/mountain 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

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
20 Mar 14, Kerry Porter (South Africa - Summer rainfall climate)
my Watermelon plant has just started bearing fruit. can the fruit get eaten by bugs or stung? what can i do to prevent this
29 Aug 14, Brendan (South Africa - Humid sub-tropical climate)
Hi Kerry, I make fruit fly traps to catch most of them as they destroy my fruit. Cut the top of a coke bottle off and invert it back into the base section. Make a small hole in the cap so the fly enters but cannot leave. In the bottle, place a piece of banana and add "Apple Cider Vinegar" Do not cover the banana completely. Once the banana starts to ferment in the vinegar the smell attracts the flies. Good Luck....
23 Jan 16, Andre Lotz (South Africa - Summer rainfall climate)
Thanks for the FF trap. I gave up on watermelons as EVERY fruit gets stung. We use a similat trap for mozzies! Andre
Showing 241 - 250 of 350 comments

Has anyone growen watermelons in Wellington?

- Toni

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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. GardenGrow 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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