Best Greenhouse Kits: Top 5 Picks For 2023 - GratiTea

Greenhouse gardening has become increasingly popular among gardening enthusiasts, allowing for optimal control over growing conditions and prolonging the growing season for plants. A greenhouse kit provides a convenient and cost-effective way to protect plants from harsh weather, pests, and diseases. For anyone looking to enhance their gardening experience, selecting the perfect greenhouse kit can elevate their planting endeavors.

Greenhouse kits come in various materials, sizes, and designs, catering to a wide range of preferences and gardening needs, from growing flowers and herbs to nurturing larger plants or seedlings. Choosing the right greenhouse kit should focus on factors such as its durability, ease of assembly, ventilation system, and the amount of space available in your garden.

When purchasing a greenhouse kit, it is essential to consider the frame material and cover material used in construction. These materials impact the overall longevity of the greenhouse and its ability to retain heat and resist weather damage. Additionally, consider the size and shape of the kit to ensure that it fits your garden space seamlessly and can adequately accommodate your intended planting activities.

We have carefully researched and tested an array of greenhouse kits to provide recommendations that cater to diverse gardening needs and preferences, ensuring that you can find the perfect fit to elevate your growing experience.

Best Greenhouse Kits

We've researched and compiled a list of the top greenhouse kits available on the market. Check out our selections below for the finest options to suit your gardening needs.

HOWE 8x16x7.5 FT Polycarbonate Greenhouse

HOWE Greenhouse

The HOWE Polycarbonate Greenhouse is a reliable choice for those seeking an easy-to-access and well-ventilated greenhouse with great structure.


  • 6mm Twin-wall PC panels with UV protection
  • Two swing doors and four adjustable roof vents
  • Strong aluminum frame and built-in rain collection system


  • Unclear assembly instructions
  • Some parts may be missing
  • Requires additional support or decking for stability

After extensive use of the HOWE 8x16x7.5 FT Polycarbonate Greenhouse, we've found it strikingly effective for raising seedlings and heat-loving plants, thanks to the 6mm Twin-wall translucent PC panels that offer excellent UV protection. This greenhouse has a generous interior space with a 5.2FT wall height, making it easy to access and work within without any unnecessary bending.

Ventilation is a crucial aspect of a greenhouse, and HOWE has taken this into consideration by equipping this model with two swing doors and four adjustable roof vents. This setup allows for proper air circulation and moisture management, creating a conducive environment where plants can thrive.

It’s essential to mention the robust, rust-resistant aluminum frame with corner and middle posts for extra stability. The built-in rain collection system is a fantastic addition, as it helps to maximize water resources and benefits the environment.

On the downside, the assembly process can be quite challenging due to unclear instructions. Some customers have reported receiving their packages with missing parts, though customer service does address these issues promptly. Lastly, it’s necessary to invest in additional support or decking underneath the greenhouse to provide a more stable foundation.

Overall, the HOWE 8x16x7.5 FT Polycarbonate Greenhouse stands as a considerable option for anyone looking to enhance their gardening experience and provide the perfect growing environment for their plants.


PaPaJet 8x14x7.5 FT Polycarbonate Greenhouse

PAPAJET Greenhouse

The PaPaJet Polycarbonate Greenhouse is a sturdy option for those seeking a spacious and functional greenhouse for their garden.


  • Professional grade and weather-resistant design
  • Large storage capacity for garden tools
  • 4 vents and double sliding doors for ventilation


  • Some assembly difficulties reported
  • Possible shipping complications
  • Quality of materials could be better

The PaPaJet Greenhouse has a professional-grade, weather-resistant design that features a heavy-duty, rust-resistant aluminum frame with inserted 6mm PC panels. It's suitable for both plants and heavy garden tools storage, supporting up to 1000lb. With its 480 cu. ft. storage capacity, it offers ample space for not just plants, but also garden tools, lawn mowers, and even extra patio furniture.

One of the best aspects of this greenhouse is its ability to function as a sunroom. By turning an existing porch, deck, or patio into an enclosure, it creates an elegant space to relax and enjoy your garden. Additionally, the greenhouse comes with 4 vents and double sliding doors, allowing for fresh air circulation, keeping both plants and users comfortable.

However, we did find some drawbacks to this greenhouse. Some customers have reported that the assembly process was challenging and time-consuming, even with the provided instructions. It may require at least three competent DIY enthusiasts and several hours to complete. Additionally, there have been some shipping issues with the product, including delayed or missing boxes.

Another concern is the quality of the materials used. The polycarbonate panels, for example, seem to be of lower quality compared to more expensive greenhouse options. While this may not be a deal-breaker for some, it could impact the overall durability and lifespan of the greenhouse.

In conclusion, the PaPaJet Polycarbonate Greenhouse is a reasonably functional and spacious option for anyone looking to add a greenhouse to their garden. However, some potential challenges in the assembly process and concerns regarding material quality should be weighed against its benefits before making a final decision.


VanAcc 8x14x7.5 FT Polycarbonate Greenhouse

VanAcc Greenhouse

This VanAcc Greenhouse offers an ideal space for your plants while providing convenient storage and a beautiful design.


  • Heavy-duty, rust-resistant aluminum frame
  • 480 cu. ft. storage capacity
  • Built-in gutter system


  • Assembly requires 3 people and 6-8 hours
  • Manual can be unclear
  • Potential for lost parts during shipping

When purchasing a greenhouse kit, durability and design are essential factors to consider. We found the VanAcc Polycarbonate Greenhouse to be a fantastic option in both of these aspects. Constructed with a heavy-duty aluminum frame and 6mm polycarbonate panels, this greenhouse can withstand harsh weather, providing a safe space for your plants. The design is not only functional but also attractive, thanks to its matte black finish.

We particularly appreciated the ample storage space offered by the 480 cu. ft. capacity. This greenhouse enables you to store all your gardening tools, lawn mowers, and more. Additionally, the built-in gutter system assists in effective water drainage and collection, while the double sliding doors and four vents ensure appropriate ventilation for your plants.

However, we did find the assembly process to be time-consuming - it requires at least three people and can take between 6 to 8 hours to complete. The included instruction manual could be more detailed, and there is a chance that some screws might be missing due to shipping issues. Despite these minor setbacks, we believe the VanAcc Greenhouse is an excellent investment for those looking for a combination of storage and plant nurturing space for their backyard garden.


Palram - Canopia Triomphe Chalet 12 Ft. x 15 Ft. Greenhouse Kit

Palram Greenhouse

The Palram Triomphe Chalet Greenhouse Kit is an excellent choice for gardening enthusiasts who also value outdoor living spaces.


  • Spacious and versatile
  • Sturdy construction
  • Maintenance-free design


  • Not beginner-friendly assembly
  • Upgrades for lighting and heating are sold separately
  • Takes up a significant amount of yard space

We just tried out the Palram Triomphe Chalet Greenhouse Kit, and we're genuinely impressed with the way it marries the concept of a garden, home, and outdoor lifestyle. The T-shaped orangery boasts high side walls and vaulted ceilings, making it feel like a luxurious outdoor living room, ideal for sharing meals or simply lounging in to escape the daily grind.

The Triomphe offers over 9 feet of headroom and is spacious enough to accommodate patio furniture, plants, or any other outdoor decorations. The solid acrylic glass glazing reduces outside noise, creating a cozy and private space for you and your loved ones.

Two large automated roof vents and double swinging doors provide an abundance of airflow, ensuring that the greenhouse maintains a comfortable atmosphere. It's worth noting that the doors can be attached to either the front or the side, based on your preference or available space.

The sturdy aluminum frame has a fine black finish, which is strong enough to support shelves anywhere inside the greenhouse. We appreciate Palram's attention to detail when it comes to creating a comfortable and functional garden oasis.

One important aspect to consider is that installing this greenhouse might not be straightforward for beginners. The step-by-step instructions are designed for DIY installation, but it might be a bit challenging due to the sliding panel assembly system. A bit of patience and skill will yield a beautiful, fully assembled garden chalet.

In conclusion, we highly recommend the Palram Triomphe Chalet Greenhouse Kit. It's an elegant and functional addition to any garden, providing a luxurious space to grow plants, entertain, or relax. The solid construction and maintenance-free design make it a long-lasting investment for your home.


Palram - Canopia Snap & Grow 8 Ft. x 32 Ft. Greenhouse Kit

Palram - Canopia Snap & Grow Greenhouse

A wise choice for garden enthusiasts looking for a durable and easy-to-assemble greenhouse kit to extend their growing season.


  • Quick installation with SmartLock connectors
  • Sturdy construction with rust-resistant frame
  • Excellent light transmission and UV protection


  • Assembly requires patience and precision
  • Noisy during windy conditions
  • Door may require additional sealing for insulation

Our experience with the Palram - Canopia Snap & Grow greenhouse kit has been mostly positive. The well-designed SmartLock connectors and sliding panel assembly system make it relatively easy to install. However, we recommend taking the time to carefully follow the instructions, as assembling the greenhouse might be time-consuming.

The rust-resistant aluminum frame, along with the galvanized steel perimeter base, adds to the sturdiness of the greenhouse. The polycarbonate panels are virtually unbreakable and provide over 90% light transmission while blocking 100% of harmful UV rays, which is extremely beneficial for growing plants.

While the greenhouse has many advantages, we noticed a few minor flaws. During strong winds, the greenhouse tends to be quite noisy due to the polycarbonate panels. Additionally, the door might require some extra sealing for better insulation, especially in colder climates.

Overall, the Palram - Canopia Snap & Grow greenhouse kit is a reliable and well-built option for those looking to extend their growing season and protect their plants. With a few small improvements, this greenhouse can be a valuable addition to your backyard or garden.


Buying Guide

When it comes to choosing the best greenhouse kit for your needs, there are several factors to consider. In this buying guide, we'll discuss some of the key features and factors to keep in mind as you make your decision.

Size and Space

One of the most important factors in choosing a greenhouse kit is the size and the space you have available. Carefully measure your intended greenhouse area and keep these dimensions in mind as you browse different options. Remember, you'll not only need space for the greenhouse itself, but also for walking paths, storage, and potentially work areas.

Frame Materials

Greenhouse kits come with a variety of frame materials, each with their own pros and cons. Some common frame materials include:

  • Aluminum: Lightweight and durable, aluminum frames are a popular choice. They are resistant to rust and can be relatively easy to assemble.
  • Wood: Wooden frames offer a more traditional look and can be quite sturdy. However, they may require more maintenance and are typically heavier than aluminum frames.

Glazing Options

The type of glazing you choose for your greenhouse can impact its energy efficiency and the overall growth conditions for your plants. Some common glazing options include:

  • Glass: Traditional glass panes provide excellent light transmission and are visually appealing, but they can be fragile and may require more maintenance.
  • Polycarbonate: This durable and lightweight plastic material is becoming an increasingly popular choice for greenhouses. It offers good light transmission and insulation properties while being much more resistant to breakage compared to glass.

Ventilation and Temperature Control

Proper ventilation is essential to maintaining a healthy growing environment inside your greenhouse. Look for greenhouse kits with built-in vents, or consider adding a ventilation system separately. Automated temperature control systems can also help you maintain optimal growing conditions, but may come at an additional cost.

With these factors in mind, you should be well-equipped to make an informed decision on the best greenhouse kit for your specific needs. Keep in mind the space, frame materials, glazing, and ventilation options when selecting a kit, and you'll be on your way to creating a thriving, successful greenhouse.

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