Growing Watermelon

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

(Best months for growing Watermelon in USA - Zone 5a regions)

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
  • 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

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).
11 Jul 20, Cathy Mallen (USA - Zone 10a climate)
I am wondering what watermelon will grow in zone 10 (the coastal portion) Thank you.
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?
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.
02 Sep 18, Murray freeman (Canada - Zone 6a Temperate Warm Summer climate)
What are sweetest watermelon that can be grown in 6a
18 Aug 18, Tammy (USA - Zone 10a climate)
What are the best garden layouts for melons tomatoes, cucumbers and peppers? Not sure what can grow next to what best
12 Mar 18, DANIEL Etheridge (USA - Zone 8b climate)
when should i plant watermelon in zone 8b apple valley California 92308
06 Jan 18, khalil (USA - Zone 12a climate)
hi, please i need best F1 watermelon, tomato, cucumber & squash seeds growing well in USDA Zones 11b - 12a ( very hot climates and dry ) thanks
Showing 1 - 10 of 16 comments

Ask a question or post a comment or advice about Watermelon

Please provide your email address if you are hoping for a reply


All comments are reviewed before displaying on the site, so your posting will not appear immediately

Gardenate App

Put Gardenate in your pocket. Get our app for iPhone, iPad or Android to add your own plants and record your plantings and harvests

Planting Reminders

Join our 60,000+ gardeners who already use Gardenate and subscribe to the free Gardenate planting reminders email newsletter.


Home | Vegetables and herbs to plant | Climate zones | About Gardenate | Contact us | Privacy Policy

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.
We cannot help if you are overrun by giant slugs.