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

05 Jan 19, Mike Logan (Australia - sub-tropical climate)
Try some Epsom Salts - buy it in the supermarket or nursery.
26 Dec 18, Gert Coetzer (South Africa - Summer rainfall climate)
Where can I buy Black Diamond Watermelon seed?
20 Dec 18, Kams (New Zealand - temperate climate)
Hi there, I am here in Auckland and recently have shifted my watermelon plant to a 15 Litre Pot, one of the prime reason being our ground is full of roots and generally found it difficult in the past 2-3 years for other plants growing. Do you think it is ok to proceed in the pot and can connect vine to multiple stakes? Kindly advice. Thanks
02 Jan 19, Mem (New Zealand - temperate climate)
Hi I grow watermelons and other melons in pots every year,it can certainly be done but the melons won't be as big.You will also need to take care that the soil doesn't dry out,but isn't soaked and to feed often.I add blood and bone,sheep pellets and worm castings to a mix of 50/50 compost and potting mix to the pot,use a curcubit feed once a week and a general liquid feed every 2 weeks.
21 Dec 18, Mike (New Zealand - temperate climate)
Plenty of people might do it but I wouldn't grow such a big plant in a pot full stop, no matter how big the pot. The nutrient and watering required. Think about raised garden beds with something between the ground and the bottom of the bed like wood pallets. Pallets on the ground - then weed matting and shade cloth - then small stones maybe - then garden soil about 5-600mm deep. Probably quite expensive but is probably the best solution. Could start small and add to the size of the bed/s in future years. Otherwise stick to growing small plants in pots.
23 Nov 18, Joyce (USA - Zone 9b climate)
Do you have to have a male and female watermelon together for them to bear
05 Jan 19, Petra (USA - Zone 9a climate)
Watermelon like all other melons, squash (incl. zucchinis) and pumpkins produce both male and female flowers. So only one is needed. However i always plant two or more in case one fizzles out.
18 Nov 18, Lorraine Johnstone (Australia - temperate climate)
We have been advised to grow and eat yellow watermelons. This actually means blending the entire melon, skin, etc as well, and drink/eat. It's apparently very good for you. Plan to take out the pips and dry them. Has anyone done this, or can anyone please advise how to go about growing? I am awaiting receipt of the seeds. Thanks in advance.
18 Nov 18, Mike (Australia - sub-tropical climate)
Difference between red and yellow - yellow is sweeter and red has heaps of antioxidants - yellow has little or none. Melons are grown in the spring - in sub tropical and temperate you would be picking them now to mid Jan. You can also grow them late summer into autumn - don't taste as good I reckon. The skin can be used for pickling and relish. If you really need whatever is in the yellow you may need to source it from somewhere else as you would only have melons for a few months of the year. Read up about growing them.
23 Oct 18, Debra (New Zealand - temperate climate)
wanting to grow melons this year, I am in North Canterbury any hints for success welcome, am I too late to sow seed ?
Showing 151 - 160 of 350 comments

I have a similar problem were the fruit has got to a certain size and then stopped growing ?

- mark

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