Growing Watermelon

Cucurbitaceae c. lanatus : Cucurbitaceae / the gourd family

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

(Best months for growing Watermelon in USA - Zone 7a 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

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.
16 Apr 20, Ms Wanderful (USA - Zone 9a climate)
What are the best melons to plant in zone 9a & 9b? And when in the season. Can I plant a melon in a container?
11 Jul 20, Cathy Mallen (USA - Zone 10a climate)
I am wondering what watermelon will grow in zone 10 (the coastal portion) Thank you.
02 Dec 20, Atlantic (USA - Zone 10a climate)
I planted my seedlings from Walmart seeds in October. 50¢ seeds! Charleston Grey watermelon, think seed spitting as a child, has now gifted me 3 melons that I can see (12.01.20). Ps 50¢ package. Bye from Zone10A!
16 Jul 20, Jodie (USA - Zone 9b climate)
My grandkids want to grow watermelon with the seeds from a fresh watermelon. It's mid July and we're in zone 9b in the Arizona desert. Thank you in advance. Happy planting!
23 Jul 20, colleen (USA - Zone 10b climate)
Fun project! Be aware that seeds might be sterile from a store-bought melon (and likely won't be true to seed). But worth a shot for the surprise factor, I think. They should try the paper towel sprouting method to test viability. If seeds sprout, get them in the ground by August and there should still be time for fruits. They'll need plenty of water in hot weather (mulch helps too).
20 Jun 21, NSyed (USA - Zone 10a climate)
Is July too late to plant or transplant? Or should I wait for August. Wanted to get a plant or seeds as a late Father's day gift but thought I should ask. It can always get a birthday present in August
23 Jun 21, (USA - Zone 10a climate)
Probably too late.
07 Aug 21, Sandra Carlton (USA - Zone 8b climate)
How long does it take for watermelons planted in mid July in zone 8 to make watermelons?
Showing 11 - 20 of 34 comments

My grandkids want to grow watermelon with the seeds from a fresh watermelon. It's mid July and we're in zone 9b in the Arizona desert. Thank you in advance. Happy planting!

- Jodie

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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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