Maintain temperature between 18-24°C for optimal growth

Most microgreen varieties thrive at room temperature between 18-24°C (65-75°F). Temperature affects germination speed, growth rate, and mold risk more than almost any other factor.

Why It Matters

• Below 15°C: Germination slows dramatically, some seeds won't sprout at all
• 18-24°C: Ideal range — steady growth, low mold pressure
• Above 27°C: Accelerates growth but sharply increases mold and bacterial risk

Tips

• Use a simple indoor thermometer near your trays to monitor conditions
• In winter, a seedling heat mat ($15-25) under trays speeds germination
• In summer, increase air circulation and reduce watering frequency
• Avoid placing trays near heating vents, radiators, or cold drafts