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Growing Watermelon

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

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

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

  • 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 21°C and 35°C. (Show °F/in)
  • Space plants: 60 - 75 cm apart
  • Harvest in 12-17 weeks.
  • Compatible with (can grow beside): Sweetcorn, Sunflowers
  • Avoid growing close to: Potatoes
  • Melon flower
  • Watermelon

Large, round or oval, smooth green skinned, delicious, sweet pink fleshed melon.

Some have stripes on the skin.

Some varieties will produce fruit up to 14 Kg (31 US pounds).

Harvest when the part in contact with the ground is turning yellow and the fruit sounds hollow when tapped.

Watermelon needs plenty of room to grow as it sends out long vines

Needs a long warm season to mature.

Culinary hints - cooking and eating Watermelon

Cut up and eat in slices.
Use to make fruit drinks.
Use in fruit salads.

Your comments and tips

13 Oct 19, Mokone j mahlatsi (South Africa - Summer rainfall climate)
Hi can you assist with black diamond watermelon and citrulus lanatus Carolina cross How must I plant and grow ? Thank you
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?
07 Sep 19, Midda (South Africa - Dry summer sub-tropical climate)
Afternoon, please i need advice about the watermelon, how to produce the sweetest watermelon. At what time of the year. Thank you
10 Jul 19, Khathutshelo (South Africa - Summer rainfall climate)
How many watermelons can I keep per plant and still retain good size and quality?
24 Jun 19, Mike (South Africa - Summer rainfall climate)
Is 8th July fine for planting in Bochum?
04 May 19, Patrck (South Africa - Summer rainfall climate)
I am in Limpopp can I plant watermelom in May lts hot during the day and cold during the night
28 Jun 19, sello (South Africa - Summer rainfall climate)
no , try it in mid august , im from gauteng , we have almost the same weather pattern.
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.
Showing 1 - 10 of 221 comments

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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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