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Growing Watermelon

(Cucurbitaceae c. lanatus)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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(Best months for planting Watermelon in New Zealand - cool/mountain regions)

  • Harvest in 68-100 days
  • 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.
  • Space plants: 60-75cm

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

14 Feb 13 Menaka Mahajan (New Zealand - sub-tropical climate)
Hi I planted a watermelon plant in my garden in Oct last year. It has just about started growing tiny watermelons now. Will the watermelons sustain the temparature drop from high 20s to low 20s. What can I do to ensure that they mature well?
13 Mar 13 Paul (New Zealand - temperate climate)
Hi guys, could you please give me an indication as when Watermelons should be at the best price, I remember last year it was around this period but not certain. Thanks
01 Oct 13 Sarah (New Zealand - sub-tropical climate)
Hi. I'm new at planting watermelon. I've just put seeds into tray and will plant out. Once they are outside and growing, will I need to feed them a lot or just as much as other veges/fruit. Just being watermelon I thought they may require a lot more water.
16 Jan 14 Brian Pattison (New Zealand - sub-tropical climate)
Hy, I have been trying for 3 years and have no luck,the vines get to about 1m long and that is it,they have had some flowers,I grow from seed,and have bought plants,but still nothing.Any ideas Please. I live in Little waihi South of tepuke In the BOP NZ
28 Jan 14 Debby (New Zealand - sub-tropical climate)
Hi,this is my first year at growing watermelons.Our dirt is clay so my husband dug a hole and put a mixture of compost and potting mix in there.I planted one plant and now have seven watermelons growing,One is the size of a ball and the others just larger than tennis balls
22 Dec 14 olivia (New Zealand - temperate climate)
My watermelon seedlings don't seem to like being transplanted into our soil. They shrivel up and die off. Is it possible to sow direct into the ground?
16 Jan 16 Karen (New Zealand - temperate climate)
I grew Georgia Rattlesnake Watermelon and I had them in tyres full of very rich soil and I watered them every day during December/January/February and harvested them in Late February . I also cut the runner once I had 2 watermelons forming on each plant and each of my watermelons weighed in at 6 kg or just over.
31 Jan 16 Dave (New Zealand - sub-tropical climate)
Hi there, wanting to grow watermelon here in Whangarei. Could you recommend seeds for planting please? Cheers.
09 Sep 16 Renee (New Zealand - cool/mountain climate)
Hi I have heard that the south island is to cold for watermelon can you please give me possible ideas to growing watermelon
17 Oct 16 Dennis O'Kane (New Zealand - temperate climate)
Wanganui the last 2 year.s iv gotten 4 melons off each off my 3 vine.s seeded in warm place planted out with lamb pallets 200 under the root.s then planted with watered down blood / bone good luck I'm also trying again

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New Zealand - cool/mountain,   New Zealand - sub-tropical,   New Zealand - temperate  

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