How to Grow Watermelon: A Sweet Guide to Juicy Success

Posted on Categories:"How To Grow", Edible Plant Growing Information
How to Grow Watermelon

How to Grow Watermelon

Watermelon, with its sweet, juicy flesh, is a summer favorite that can be even more satisfying when you grow it yourself. This comprehensive guide will take you through the step-by-step process of how to grow watermelon successfully, whether you have a spacious garden, a small plot, or even just a sunny balcony.

Selecting Watermelon Varieties

Before you start your watermelon-growing journey, it’s essential to choose the right watermelon varieties that suit your climate and preferences. Here are some common types:

  • Crimson Sweet: Known for its classic sweet flavor and deep red flesh, this variety is a favorite among gardeners and consumers alike.
  • Sugar Baby: If you have limited space, the Sugar Baby watermelon is perfect due to its compact size. It has sweet, red flesh and matures relatively quickly.
  • Yellow Doll: For something a bit different, consider growing the Yellow Doll watermelon with its bright yellow flesh.
  • Moon and Stars: This heirloom variety features dark green skin speckled with yellow “moons” and one or two larger “stars.” It has sweet, pink flesh.

1. Site Selection and Soil Preparation

Watermelons need plenty of sunshine, so select a location that receives full sun, which means at least 8 hours of direct sunlight daily. Here’s what you should consider:

  • Well-Draining Soil: Watermelons prefer well-draining soil with good fertility. Work the soil to a depth of at least 12 inches and remove any rocks, debris, or weeds.
  • Soil pH: Watermelons thrive in slightly acidic to neutral soil with a pH level of 6.0 to 6.8. You can adjust the pH if necessary using lime or sulfur.

2. Starting Watermelon Seeds or Transplants

Watermelons can be grown from seeds or transplants. Starting from seeds gives you more variety options, while transplants provide a head start. Here’s how to start watermelons:

  • Starting Indoors: Start watermelon seeds indoors about 2-4 weeks before the last expected frost. Use peat pots or seed trays with a good-quality seed starting mix. Sow the seeds about 1 inch deep. Transplant seedlings into the garden when they have at least two true leaves.
  • Starting Outdoors: In regions with a long growing season, you can sow watermelon seeds directly in the garden after the danger of frost has passed. Make sure the soil has warmed to at least 70°F (21°C).
  • Transplants: If you want to gain some time, purchase watermelon transplants from a nursery and transplant them into your garden when the weather is warm.

3. Planting Watermelons

Watermelon vines can take up a lot of space, so give them room to spread out. Here’s how to plant them:

  • Spacing: Plant watermelon seeds or transplants in hills or rows, spacing them 3-4 feet apart. Leave about 7-8 feet between rows. If you’re short on space, consider bush or compact watermelon varieties.
  • Planting Depth: Plant seeds about 1 inch deep in groups of 3-4 seeds per hill. Once they’ve sprouted and developed true leaves, thin the seedlings to the strongest one per hill.

4. Providing Adequate Care

Growing healthy watermelon plants requires proper care. Here are the key steps:

  • Watering: Watermelons need consistent moisture to prevent the fruit from splitting. Keep the soil evenly moist, especially during dry spells.
  • Mulching: Apply a layer of organic mulch, such as straw or compost, around the plants. Mulch helps retain soil moisture, suppress weeds, and regulate soil temperature.
  • Fertilization: Watermelons are heavy feeders and benefit from regular fertilization. Use a balanced, all-purpose fertilizer or one formulated for vegetables. Follow the instructions on the product label.
  • Pest and Disease Management: Keep an eye out for common watermelon pests, such as aphids and cucumber beetles. Implement organic pest control methods if necessary. Additionally, consider planting marigolds and nasturtiums nearby to help deter pests.
  • Support for Vining Varieties: If you’re growing vining watermelon varieties, provide a trellis or support system to keep the vines off the ground. This can help protect the fruit from rot and pests.

5. Pollination

Watermelons require pollination to set fruit. Bees are the primary pollinators of watermelon flowers. To attract pollinators, avoid using pesticides harmful to bees and plant nectar-rich flowers nearby.

6. Harvesting Watermelons

The sweet reward comes when it’s time to harvest your watermelons. Here’s what you need to know:

  • Timing: Watermelons are typically ready for harvest 80-100 days after planting, depending on the variety and growing conditions.
  • Harvest Indicators: Look for these signs to know when watermelons are ripe:
    • The tendril closest to the stem of the watermelon should be brown and dried.
    • The underside of the watermelon, where it rests on the ground, should change from pale green to a cream or yellowish color.
    • The skin should become dull and resist penetration by a thumbnail.
  • Harvest Technique: Use a sharp knife or pruning shears to cut the watermelon from the vine, leaving a few inches of stem attached. Do not pull or twist the fruit, as this can damage the vine.

7. Storing Watermelons

Storing watermelons properly helps maintain their freshness and flavor. Here are some tips:

  • Room Temperature: Whole, uncut watermelons can be stored at room temperature for up to a week.
  • Refrigeration: Once cut, store watermelon in the refrigerator. Place it in an airtight container or cover it tightly with plastic wrap to prevent moisture loss.
  • Freezing: Watermelon can be frozen, but it will change in texture. Frozen watermelon is best used in smoothies or cold drinks.


Growing watermelons is a delightful experience that allows you to enjoy the sweet, juicy taste of summer right from your garden. By selecting the right watermelon varieties, preparing the soil, providing proper care, and safeguarding your plants against pests and diseases, you can look forward to a bountiful harvest. Whether you have a large garden or just a small space, watermelons can be successfully grown in various settings. Homegrown watermelons not only offer freshness and flavor but also the satisfaction of cultivating your own delicious, sun-ripened fruit. So, roll up your sleeves, put on your gardening gloves, and start growing your very own watermelons for a taste of summer’s finest.