Growing Watermelon in Zone 10B

Watermelons need heat, space, and a long growing season. Perfect for southern and warm zones.

Zone 10B has a very long growing season with mild winters. Many crops can be grown nearly year-round with successive plantings.

Top Growing Tips

• Needs 80-90 days of warm weather minimum
• Use black plastic mulch to warm soil and suppress weeds
• Reduce watering as fruits ripen for sweeter flavor
• Look for yellow ground spot and dried tendril as ripeness signs
• Short-season varieties work in zones 4-5 if started indoors

Companion Planting

Good companions: corn, sunflowers, nasturtiums

Avoid planting near: potatoes

Harvest Timeline

80-95 days from seed

About Zone 10B

USDA Hardiness Zone 10B has an average last spring frost around Jan 15 and first fall frost around Dec 31. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.