How to Grow Watermelon in Connecticut

Watermelon Planting – The Complete Guide

Choosing the Right Watermelon Variety

One of the most critical factors in growing watermelons in Connecticut is selecting varieties suited to the region’s climate. Look for varieties that can thrive in cooler temperatures and have a shorter growing season. Here’s a table comparing some popular watermelon varieties ideal for Connecticut:

VarietyDays to MaturityFruit SizeDisease ResistanceNotes

Sugar Baby	75-85 days	8-10 lbs	Anthracnose, Fusarium Wilt	Small, icebox-type melons
Crimson Sweet	85-90 days	16-25 lbs	Anthracnose, Fusarium Wilt	Large, oblong melons with sweet, crisp flesh
Yellow Doll	75-85 days	6-8 lbs	Anthracnose, Fusarium Wilt	Small, yellow-fleshed melons with a unique flavor
Seedless Trio	80-90 days	15-20 lbs	Anthracnose, Fusarium Wilt	Seedless, large melons with crisp, sweet flesh

Heat-Tolerant Varieties

While Connecticut summers can be warm, there may be cooler periods that can affect watermelon growth. Look for heat-tolerant varieties like ‘Crimson Sweet’ or ‘Seedless Trio’ that can better withstand temperature fluctuations.

Disease-Resistant Varieties

Watermelons are prone to various diseases, such as anthracnose and fusarium wilt. Choosing disease-resistant varieties like those mentioned in the table above can help ensure a healthy crop.

Preparing the Soil and Planting

Proper soil preparation and planting techniques are crucial for watermelon success in Connecticut. Watermelons thrive in well-draining, nutrient-rich soil with a pH between 6.0 and 6.8.

Start by testing your soil to determine its pH and nutrient levels. Based on the results, amend the soil with compost, aged manure, or other organic matter to improve fertility and drainage.

Soil Testing and Amendments

Conduct a soil test through your local Cooperative Extension Service or a reputable testing lab. The results will provide specific recommendations for amendments based on your soil’s pH and nutrient levels.

Common amendments for watermelon plants include:

• Compost or aged manure to improve soil structure and fertility
• Lime to raise pH in acidic soils
• Sulfur to lower pH in alkaline soils
• Balanced fertilizer (e.g., 10-10-10) to provide essential nutrients

Planting Techniques

Watermelons can be started from seeds or transplants, but direct seeding is more common in Connecticut. Plant seeds 1-2 inches deep and 2-3 feet apart in hills or rows, after the last frost date. Space hills or rows 6-8 feet apart to allow for the vines to spread.

If using transplants, plant them at the same depth as they were growing in their containers, and water them thoroughly after transplanting.

Caring for Watermelon Plants

Consistent care throughout the growing season is essential for healthy watermelon plants and a bountiful harvest. This includes proper watering, fertilizing, and pest/disease management.

Watermelons have deep roots and require consistent moisture, especially during fruit development. Aim to provide 1-2 inches of water per week, either through rainfall or irrigation. Mulching around the plants can help retain moisture and suppress weeds.

Watering and Fertilizing

In addition to consistent watering, watermelons benefit from fertilization. Apply a balanced fertilizer (e.g., 10-10-10) at planting time, and side-dress with nitrogen fertilizer when the vines begin to run.

Be careful not to over-fertilize, as this can lead to excessive vine growth and reduced fruit production.

Pest and Disease Management

Watermelons are susceptible to various pests and diseases, so regular monitoring and appropriate control measures are essential. Common pests and diseases to watch for in Connecticut include:

• Cucumber beetles
• Aphids
• Powdery mildew
• Downy mildew
• Anthracnose
• Fusarium wilt

Implement integrated pest management strategies, such as:

• Using floating row covers or insect netting to exclude pests
• Practicing crop rotation to disrupt disease cycles
• Applying organic or conventional fungicides and insecticides as needed, following label instructions

Harvesting and Storing Watermelons

Knowing when to harvest and how to store watermelons properly can ensure you enjoy their peak flavor and quality.

As watermelons near maturity, keep an eye out for these signs of ripeness:

• The tendril closest to the melon turns brown and dries up
• The underside of the melon develops a creamy or whitish color
• The rind loses its glossy appearance and becomes dull

Determining Ripeness

The classic “thumping” technique can also help determine ripeness. A ripe watermelon will produce a dull, hollow sound when tapped, while an unripe melon will have a higher-pitched, more solid sound.

Harvesting Techniques

When harvesting, use a sharp knife or pruning shears to cut the melon from the vine, leaving 2-3 inches of stem attached. Gently lift the watermelon and avoid dragging it, as this can bruise the fruit.

Storage Tips

Watermelons can be stored at room temperature for up to two weeks, but they’ll last longer when refrigerated. Store whole, uncut melons in the refrigerator, where they can keep for up to three weeks.

Once cut, wrap any leftover watermelon tightly in plastic wrap or store it in an airtight container in the refrigerator, where it will keep for up to five days.

Conclusion

Growing watermelons in Connecticut requires careful planning and attention to detail, but the effort is well worth it for the sweet, juicy reward. By choosing the right variety, preparing the soil properly, providing consistent care, and following proper harvesting and storage techniques, you can enjoy a bountiful watermelon harvest in the Nutmeg State.