When considering the addition of a backyard greenhouse, one of your most critical decisions will be choosing the type of greenhouse that best suits your gardening needs and the available space. Backyard greenhouses come in various styles, sizes, and materials, giving you plenty of flexibility. In this article, we will explore the different types of greenhouses, the materials they are made of, and what to consider when selecting the ideal greenhouse for your gardening endeavors.
Types of Backyard Greenhouses
Backyard greenhouses come in several types suited for different gardening requirements and preferences. Here are some of the most common types:
Freestanding Greenhouses are independent structures not attached to any existing buildings. They offer the most flexibility in terms of placement and design since they’re not constrained by the layout or orientation of an existing building. Freestanding greenhouses can be placed anywhere on the property, typically in an open, accessible area with adequate sunlight.
Lean-To Greenhouses are attached to the side of a building, such as your house or garage. They are an excellent option for gardeners with limited space, as they share a wall with an existing structure to provide stability, save space, and reduce construction costs.
Attached Greenhouses are fully integrated with an existing building and share multiple walls. They can be seamlessly integrated into the overall architecture of the building, and there are often doors that open directly into the greenhouse. Attached greenhouses also benefit from the thermal mass of the connected building, which helps to regulate temperature.
Dome or Geodesic Greenhouses use a framework of triangular panels to create an aesthetically appealing, energy-efficient, and structurally stable design. The curved dome naturally permits efficient air circulation and optimal light distribution, making them well-suited for many climates and gardening purposes.
Sawtooth or A-Frame Greenhouses are characterized by their roof design, which resembles a series of repeating, upward-pointing triangles or sawtooth patterns. This distinctive building design allows optimal light exposure throughout the day. It promotes natural ventilation with gaps between the triangular ridges, which help regulate temperature and humidity, which can be particularly beneficial during summer.
Quonset Greenhouses: A Quonset greenhouse is characterized by its unique hoop-shaped design created by a series of curved or arched ribs forming half-cylinders of varying lengths. Clear polyethylene covers enclose the hoops and permit maximum light transmission, making quonsets modular, easy to install, and affordable. Quonsets are a simple and efficient option, especially popular among small-scale and budget-conscious gardeners.
Materials for Greenhouses
The materials used to construct a greenhouse are crucial in determining its performance, longevity, and energy efficiency. There are several options to choose from:
Glass: Traditional glass greenhouses are attractive and offer excellent light transmission, creating an ideal environment for plant growth. However, glass is heavy and can break, making it more challenging to install and maintain. The framework of a glass greenhouse must be reinforced to manage the weight, especially in areas where snow can accumulate. Glass also provides less insulation than other materials.
Polycarbonate: Polycarbonate panels are lightweight, durable, and provide excellent insulation. They come in various thicknesses, with double-wall panels offering better insulation properties. Polycarbonate allows a high percentage of diffuse sunlight to pass through, and the panels are bendable, allowing them to easily conform to the greenhouse structure. Polycarbonate greenhouses are often a cost-effective and efficient choice. However, they tend to scratch easily and can yellow with extended exposure to UV rays.
Polyethylene Film: Polyethylene film is a popular choice for hobby gardeners due to its affordability, versatility, and ease of installation. It’s lightweight, easy to handle, and offers good light diffusion and insulation. However, non-reinforced materials are susceptible to tears and punctures, making them less appropriate for areas prone to hail and high winds.
Fiberglass: Fiberglass panels are less popular than greenhouse panels. Overall, they offer good light transmission and moderate insulation. They are also relatively lightweight but are prone to cracking and yellowing, and are difficult to repair. Fiberglass can also be more expensive than other materials.
Acrylic: Acrylic panels offer superior light transmission and provide moderate insulation. However, they can become brittle over time and vulnerable to scratching and yellowing. They’re also more expensive than many other greenhouse cover materials.
Selecting the Ideal Greenhouse
Choosing a suitable greenhouse for your garden involves careful consideration of various factors. Here are the key aspects to keep in mind when selecting the ideal greenhouse:
Available Space: Assess the open space in your backyard. Consider the size and layout of the area to determine the most suitable greenhouse type and dimensions.
Climate: Your local climate plays a significant role in greenhouse selection. Consider your region’s temperature range, sunlight exposure, and weather conditions. Some greenhouse materials are better suited for specific climates. At the same time, sun exposure can play a significant role in choosing the best shape and design.
Purpose: Determine the primary purpose of your greenhouse. Are you looking to extend the growing season, grow specific crops, or create an ornamental garden space? The intended use will influence your choice of greenhouse type and size.
Budget: Establish a budget for your greenhouse project. Remember that the cost includes not only the greenhouse structure but also heating, cooling, and ventilation systems, as well as shelving and other interior features.
Maintenance: Consider the maintenance requirements of different greenhouse materials. Some materials may require more upkeep than others, which will impact the long-term cost and effort of greenhouse ownership.
Building Codes and Regulations: Check local building codes and regulations. Some areas may have specific requirements for greenhouse construction, including size, placement, and permitted materials.
Ventilation and Insulation: Proper ventilation and insulation are crucial for a successful greenhouse. Ensure that the selected greenhouse type allows for adequate air circulation and that the chosen material provides the necessary insulation.
Aesthetics: While functionality is critical, don’t forget about aesthetics. Your greenhouse can enhance the overall look of your garden. Choose a style and material that complements your outdoor space.
