Begonia tuberhybrida | Tuberous Begonia (PELLETED)

For optimal germination rates, initiate seed propagation indoors under controlled conditions—unless the species exhibits a high sensitivity to root disturbance. This approach allows precise regulation of temperature, humidity, and light, improving germination consistency and seedling viability. Do not skip any recommended seed treatments, as they are essential for uniform and successful germination.

Keep soil evenly moist during germination. DO NOT LET IT DRY OUT—once seeds begin absorbing water (imbibition), drying can kill the seed embryo, and even brief dryness after sprouting can kill seedlings.

Seed Type: Pelleted (fine seeds coated for easier handling)
Do Not Soak: Pellets are water-soluble — soaking can damage the seeds.

Optimum Temperature:
• Use a heat mat to maintain steady temperatures of 75–78°F (23–25°C) for best germination

Moisture & Humidity:
• Keep surface evenly moist — mist gently to dissolve the coating
Humidity above 95% is essential for strong germination
• Use a humidity dome or clear cover to maintain consistent moisture during germination. Open the dome BRIEFLY once per day to allow fresh air in and reduce mold risk. Remove the dome entirely once seedlings emerge.

pH & Growing Medium:
• Use sterile, fine seed-starting mix
• Maintain media pH between 5.5 and 6.5

Light Requirements:
Needs light to germinate — do not cover with soil
• Provide bright indirect light or grow lights (14–16 hours/day)
• Supplemental 24-hour light at germination stage boosts germination, reduces crop time, and improves seedling quality

Germination Time:
14–45 days under optimal conditions

Post-Germination Care:
• Thin seedlings after true leaves develop
• Water gently — avoid splashing delicate roots

Transplanting:
• Transplant when seedlings have 2–3 sets of true leaves
• Harden off gradually before moving outdoors

Sowing Schedule:
• Start indoors 10–12 weeks before last frost

More guides at: bloomoutlet.com/seed-guides