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 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

Your comments and tips

26 Sep 20, gordon lee (Australia - sub-tropical climate)
hello, last year 2019 i grew red rocket melons, i got melons up to 17 kg, grew in part shade up to full sun, they simply need full sun and heat, even under 30% shade cloth no good, heaps of flowers and melons, plus grow other plants that give you more flowers for pollination and bees, even ants will pollinate, happy growing
03 Feb 10, Natalie (Australia - cool/mountain climate)
When going seedless watermelon, you do need also a female variety such as sugar baby.I do have both variety and are growing well
02 Feb 10, Jungle Jack (Australia - sub-tropical climate)
Our watermelons get to the size of rockmelons then go yellow and get no bigger, what's the problem? How many should we have on the one vine please? JJ
31 Jan 10, devo (Australia - cool/mountain climate)
im growing baby watermelons (orange) in a pot for the first time and they are about the size of an egg at the moment how big do they grow and when should they be picked.the growing guide seems very vague !!
15 Jan 10, Gillian (Australia - temperate climate)
i am a first time watermelon grower and i can say wow, the plant (1 only) is going wild. Does anyone have tips on right fertiliser/care
25 Feb 13, Lachlan (Australia - temperate climate)
Yes, Gillian.... The RIGHT fertiliser for growing any fruit beautifully would be "MIRACLE" brand fertiliser ...You can easily get them from Bunnings.....Good LucK!!!
23 Oct 14, Shaun (Australia - temperate climate)
Compost is much better than fertiliser for melons, marrows and cucurbits. Fertiliser actually depletes the soil of life and is generally over applied to veggie beds and either stunts plants or burns by trying to force them too much. Your edible plants will always flourish in good quality compost, especially water melons.
06 Jan 10, Kaye (Australia - sub-tropical climate)
My melons are only getting to the size of a walnut and then dying. What is the problem please?
23 Aug 09, Jenny (Australia - cool/mountain climate)
how many watermelon types are there?
16 Aug 09, kym (Australia - cool/mountain climate)
is there any chance of getting seedless watermelon plants?
Showing 321 - 330 of 355 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. 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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