Do I Need A Greenhouse In My Backyard Farm?

“I have a small backyard farm in Seattle, Washington. I’m trying to extend my growing season and keep my plants healthy throughout the year. I’m wondering if it’s worth investing in a greenhouse, considering the space and cost involved. What are the pros and cons of having a greenhouse on a backyard farm, and are there any specific tips for someone in a rainy climate like mine?” Thanks, Jennifer, Seattle, USA.

Do I Need A Greenhouse In My Backyard Farm?

Hey Jennifer! Deciding whether you need a greenhouse in your backyard farm can indeed be a tricky decision. With the weather in Seattle being predominantly wet and mild, a greenhouse can be a game changer. Let’s break down the various aspects you need to consider to make an informed choice.

Advantages of Having a Greenhouse

A greenhouse can offer numerous benefits for your backyard farm, especially in a climate like Seattle’s. Here are some key advantages:

• Extended Growing Season: A greenhouse allows you to start planting earlier in the year and continue harvesting later into the colder months. For a place like Seattle, where the growing season can be short, this is invaluable.
• Weather Protection: With consistent rain, your plants can suffer from overwatering, which a greenhouse can help control. Plus, your plants are shielded from strong winds and heavy rains.
• Pest Control: Greenhouses can be more easily safeguarded against insects and other pests compared to open gardens.
• Plant Variety: The controlled environment allows you to grow plants that might not naturally thrive in Seattle’s climate.
• Year-Round Gardening: For those who love gardening, like yourself Jennifer, a greenhouse provides a space to garden all year round, pushing through the drearier months in Seattle.

Disadvantages of Having a Greenhouse

While a greenhouse is beneficial, there are some drawbacks you should consider:

• Initial Cost: Building or purchasing a greenhouse can be a significant investment, even for a smaller backyard farm.
• Maintenance: Greenhouses require regular upkeep, from cleaning to managing temperature and humidity. This can add to your workload.
• Space: Depending on the size of your backyard, a greenhouse might take up a significant portion of your farming area.
• Temperature Management: Overheating can become an issue, especially during rare sunny spells, necessitating proper ventilation solutions.
• Pests and Diseases: While easier to control, greenhouses can still harbor pests and diseases, sometimes even exacerbating issues due to the enclosed space.

Types of Greenhouses

Choosing the right greenhouse for your backyard farm can make all the difference. Here are the main types of greenhouses:

• Polytunnel (Hoop House): These can be a more affordable option, perfect for extended growing seasons and basic weather protection.
• Cold Frames: Small and simple, they’re ideal for seed starting, particularly suited for small spaces.
• Freestanding Greenhouses: More robust and permanent structures, often requiring a higher initial investment but offering the best climate control.
• Lean-to Greenhouses: Built against an existing structure, these can save space and share heat with your home.

Considerations for Seattle’s Climate

Given that you’re in Seattle, the climate considerations are unique. Here are a few things specifically for your region:

• Rainwater Management: Greenhouses in rainy climates need good drainage systems to avoid waterlogging.
• Light Requirements: Supplementary lighting might be necessary during winter months due to shorter daylight hours.
• Ventilation: Adequate ventilation to prevent mold and mildew, common in damp environments.

For example, Jennifer, ensuring you have a proper drainage system can help prevent any waterlogging issues that are common in Seattle. Also, investing in some portable fans or natural ventilation systems will keep the humidity levels in check, preventing mold growth.

Building Your Own Greenhouse

If DIY projects are your thing, constructing your own greenhouse can be both rewarding and cost-effective. Here’s a quick rundown on how you might do it:

1. Planning: Decide on the size, location, and type of greenhouse. Ensure it’s positioned to get maximum sunlight.
2. Materials: Common materials include wood or metal for the frame, and glass, polycarbonate, or plastic for the covering.
3. Foundation: Establish a sturdy base with concrete blocks or treated wood to prolong the life of your greenhouse.
4. Framing: Build the frame according to your planned design. Ensure it’s sturdy enough to withstand weather conditions.
5. Covering: Attach the covering material, ensuring it is tightly secured and offers good insulation.
6. Ventilation and Heating: Integrate ventilation systems and consider heating options for year-round use.

Greenhouse Management Tips

Managing a greenhouse takes some additional considerations. Here are tips to keep it running effectively:

• Temperature Control: Use vents, fans, or heaters to maintain optimal growing temperatures.
• Humidity Control: Continually monitor and adjust humidity levels to prevent fungal diseases.
• Lighting: Ensure plants get adequate light; invest in grow lights if natural sunlight is insufficient.
• Watering: Implement an efficient watering system such as drip irrigation to avoid overwatering.
• Regular Cleaning: Keep the greenhouse clean to control pests and diseases.

Cost Considerations

Understanding the costs involved can help you budget effectively. Here’s what you might need to consider:

• Initial Setup: The cost of materials or a pre-made greenhouse, plus installation if you’re hiring help.
• Maintenance: Ongoing costs for repairs, pest control, and climate control systems.
• Utility Bills: Additional heating, cooling, and lighting can add to your utility expenses.

Alternatives to Greenhouses

If a greenhouse feels too daunting or costly, there are alternatives:

• Outdoor Cold Frames: Smaller and easier to manage, ideal for extending the growing season.
• Indoor Growing: Use grow lights inside your home for smaller plants or seedlings.
• Row Covers: These can protect plants from frost and pests, extending the growing season without the expense of a full greenhouse.

Jennifer, these alternatives might serve well as more manageable options to provide a controlled growing environment without the commitment of a full greenhouse.

Final Thoughts…

Jennifer, deciding on a greenhouse involves weighing its benefits against the effort and cost. Given Seattle’s rainy climate, a greenhouse could be a fantastic addition to help you maximize your growing season and protect your plants from excessive moisture. Think about your goals, budget, and available space to make the best decision for your backyard farm.

Thanks for reaching out! Happy farming!