To test if your cantaloupe seeds are good (viable), here are a few simple methods:
Time: 5–10 days
Paper towel
Plastic bag or container
Water
Warm place (70–85°F / 21–29°C)
Moisten a paper towel (not soaking wet).
Place 10 seeds evenly spaced on it.
Fold the towel over the seeds and place it inside a plastic bag or container.
Keep it in a warm, dark place.
Check daily to ensure the towel stays moist.
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
Time: 10–15 minutes
Place the seeds in a cup of warm water.
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.
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