Guides · Science
Greenhouse Seed Starting Basics
Start seeds successfully in a small greenhouse
This guide covers choosing seed trays and mix, managing temperature and humidity, providing light, and hardening off seedlings before transplanting.
- seed starting
- greenhouse
- germination
- humidity
- gardening
Prepare trays and mix
Use clean trays with sterile seed-starting mix; moisten before sowing.
Control heat and humidity
Keep most seeds near 70-75°F and use domes briefly; vent to prevent mold.
Provide strong light
Place under grow lights 14-16 hours daily; keep lights a few inches above seedlings.
Harden off before planting
Gradually expose seedlings to outdoor conditions over 7-10 days.
Keep Exploring
Guides
Citizen Science Getting Started
Participate in real studies with simple tools and protocols.
How it works
Immune Response
See how barriers, immune cells, and antibodies coordinate to detect threats and clear infections.
Why it matters
Climate Resilience
Climate resilience reduces damage from climate-related hazards and speeds recovery.
Comparison
Mitosis vs Meiosis
Mitosis makes matching cells for growth and repair, while meiosis creates sex cells and introduces genetic variation.