How to test your seeds to see if they are good (viable)

To test if your cantaloupe seeds are good (viable), here are a few simple methods:

1. Germination Test (Most Reliable)

Time: 5–10 days

What You Need:

• Paper towel

• Plastic bag or container

• Water

• Warm place (70–85°F / 21–29°C)

Steps:

1. Moisten a paper towel (not soaking wet).

2. Place 10 seeds evenly spaced on it.

3. Fold the towel over the seeds and place it inside a plastic bag or container.

4. Keep it in a warm, dark place.

5. Check daily to ensure the towel stays moist.

6. After 5–10 days, count how many seeds sprouted.

Interpret the results:

• 8–10 seeds sprouted = 80–100% germination → Great

• 5–7 seeds = 50–70% → Usable, but sow extra

• <5 seeds = <50% → Poor, consider replacing

2. Water Float Test (Quick but Less Reliable)

Time: 10–15 minutes

Steps:

1. Place the seeds in a cup of warm water.

2. Wait 10–15 minutes.

Interpret the results:

• Seeds that sink: likely viable.

• Seeds that float: often not viable (may be hollow or damaged).

⚠️ Note: Some good seeds may float, so this is more of a rough screening tool.

3. Visual & Physical Inspection

• Healthy seeds are:

  • Firm

  • Smooth and well-formed

  • Tan or cream-colored

• Bad seeds may be:

  • Discolored (dark spots, mold)

  • Shriveled or cracked

  • Lightweight or hollow-feeling