Watermelon illustration 🍉

Watermelon Growing Guide

Cucurbitaceae family

Days to Harvest90 days
SunlightFull Sun
Frost ToleranceNone
Spacing1/sqft (12" apart)
Germination4-12 days
HardinessVery Tender
Germ. Temp85°F
Start Indoors4 weeks before last frost

Companion Planting

Avoid Planting Near

PotatoesCucumbers

Growth Stages

  1. Seedling
  2. Vining
  3. Flowering
  4. Fruiting / Harvest Ready

Planting Dates by Zone

Zone 1aZone 1bZone 2aZone 2bZone 3aZone 3bZone 4aZone 4bZone 5aZone 5bZone 6aZone 6bZone 7aZone 7bZone 8aZone 8bZone 9aZone 9bZone 10aZone 10bZone 11aZone 11bZone 12aZone 12bZone 13aZone 13b

Frequently Asked Questions

How long does it take to grow Watermelon?

Watermelon takes approximately 90 days from planting to harvest.

How much sun does Watermelon need?

Watermelon requires full sun (6+ hours direct sunlight per day).

How far apart should I plant Watermelon?

Plant Watermelon at 1/sqft (12" apart) using square foot gardening spacing.

Can Watermelon survive frost?

Watermelon is frost-sensitive and should not be exposed to frost.

What are good companion plants for Watermelon?

Good companion plants for Watermelon include Corn, Nasturtiums, Marigolds, Radishes. Avoid planting near Potatoes, Cucumbers.

How long does Watermelon take to germinate?

Watermelon seeds germinate in 4-12 days at an optimal temperature of 85°F.

When should I start Watermelon seeds indoors?

Start Watermelon seeds indoors 4 weeks before your last frost date, then transplant 2 weeks after last frost.

Plan Your Watermelon Garden

Track Watermelon from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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