Choosing Greenhouse Plant Containers: Drainage, Size, and Materials

Proper containers ensure successful seedlings and transplanting. Key factors: drainage (prevents waterlogging) and moisture retention.

Size Matters

Match container to root spread—standard 1.5-2" square suits most seedlings. Repurpose household items (tins with drainage holes). Peat pots eliminate transplant disturbance but need side slits and full burial to prevent moisture loss.

Material Differences

Plastic retains more water than clay or peat. Soil blocks dry fastest. Increase watering on hot/sunny days—greenhouse heat intensifies.