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 Australia - temperate regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • P = Sow seed

August: Frost tender Start under cover

  • 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

18 Nov 19, Another gardener (Australia - sub-tropical climate)
Any reasonable soil just not heavy clay soil. In the sun and any general vegie fert. If you prepare your soil well before planting by adding compost, manures, organic fert, inorganic fert, then that is enough to grow the crop. I have never used any of these soil enhancing products. If you grow pretty good crops without them why waste money putting all that stuff on.
04 Nov 19, (Australia - sub-tropical climate)
What fertiliser do you use and where do you put it. Also how often do you water?
05 Nov 19, (Australia - sub-tropical climate)
It is best to prepare your soil and add the fertiliser (compost, manures, in-organic fert , organic fert) when preparing it unless you want to use these soil enhancers that have very little NPK.
05 Nov 19, anon (Australia - sub-tropical climate)
Most veges just need an all round fertiliser. Leafy veges a bit more N, fruity/root veges a bit more P/ K. Read up about what N P K does in the soil. that will determine what you put on. But it is impossible to go and buy 20 different fertilisers for 20 different plants. I buy the same fertiliser to fertilise all my vegetable, lawn and shrubs. Also look at crop rotation. A leafy crop will take the N out, so you might plant a root crop after. When plants are very small they need a light watering each day, as they grow you can water less often but put more water on. Plants half grown need watering each 2-3 days. The amount depends on how big that plant grows. You would water lettuce a lot less than 1.8m high tomatoes. I water 3 days a week.
23 Sep 19, jamie clodial (Australia - tropical climate)
what are the harvesting conditions to grow watermelon
30 Sep 19, Anon (Australia - sub-tropical climate)
Are you growing them or harvesting them?
30 Apr 19, bella (Australia - temperate climate)
it doesn't have any sowing depth or distance or the proper months to plant
30 Apr 19, Liz (New Zealand - temperate climate)
Look up individual plants e.g. /www.gardenate.com/plant/Watermelon?zone=2 for information on planting etc.
13 Jan 19, Grahame B (Australia - tropical climate)
Water melons must have been invented for rank amateurs. I live in Coconut Grove, Darwin, NT and have zero gardening experience, but decided to plant some water melon seeds (in pots) at the end of October - build up time to our summer wet season. They germinated fast so out into the garden they went with a lot less ground preparation than there could have been. They grew, started producing flowers (male only for quite some time) so I kept watering them with the odd bit of general purpose soluble plant food. I haven't seen any diseases so they haven't been sprayed - apart from the termite man's overspray with he did my house's annual ant and spider treatment. Then, in early December, growth went up a few notches; I could see how far a vine had grown in a day. They started taking over the garden. Flowers appeared everywhere, as did tiny native bees to attend to pollination. Every few days a small watermelon appeared and quickly got bigger. At that point I sought some advice from a local garden shop on what I should be doing; they told me to keep watering and sold me some organic fertilizer pellets to feed them with. Now they've taken over the garden, have started climbing fences and keep on producing new melons. I'd never have imagined it could be that easy.
09 Dec 19, Linda (Australia - tropical climate)
Hi Grahame, can you tell me what type of seeds you used please where they from a packet or out of a fresh melon? Thanks
Showing 31 - 40 of 167 comments

What are the best melons to plant in zone 9a & 9b? And when in the season. Can I plant a melon in a container?

- Ms Wanderful

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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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