Getting Started with a Small Greenhouse

A small greenhouse can extend your growing season, protect delicate plants, and provide a controlled environment for propagation. Here’s how to get started.

Choosing a Location

• Select a spot with 6–8 hours of sunlight.
• Ensure good drainage and access to water and power if possible.
• Consider prevailing winds; use windbreaks where necessary.

Structure and Materials

• For beginners, a polycarbonate or polyethylene tunnel is affordable and efficient.
• Use galvanized steel or aluminum frames for durability.
• Install automatic vent openers to maintain airflow.

Temperature and Ventilation

• Ideal daytime temps: 21–27°C (70–80°F); night: 13–18°C (55–65°F).
• Use shade cloth during peak summer.
• Add a small circulation fan to reduce disease pressure.

Watering and Humidity

• Drip irrigation or micro-sprayers help maintain consistent moisture.
• Keep humidity between 50–70% to minimize fungal issues.
• Water in the morning to allow foliage to dry before night.

Planting Plan

• Dedicate benches for propagation and a separate zone for mature plants.
• Rotate crops seasonally; avoid overcrowding to improve airflow.
• Start with cool-season greens, herbs, and propagation trays for perennials.

Monitoring

• Use a min/max thermometer and a hygrometer.
• Keep a simple log for temperature swings, pests, and maintenance.

With a thoughtful setup and routine checks, your greenhouse will deliver healthy starts and reliable harvests throughout the year.