March 13, 2025
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Choosing the right greenhouse starts with understanding what you plan to grow. This decision will influence the size, light levels, temperature, and humidity requirements necessary for healthy plant growth.

Purpose

  • If you plan to grow vegetables year-round, opt for a greenhouse with maximum light levels in winter.
  • If your focus is on propagation and germination, maximum light may be less critical.

Size and Position

  • Consider factors like:
    • Budget
    • Plant types
    • Number of plants
    • Workspace requirements
    • Building regulations
  • Select a greenhouse larger than your current needs to allow room for future expansion.

Choosing the right site is crucial:

  • Plants that need 6+ hours of sunlight require a location with minimal shade.
  • Keep in mind that the sun sits lower in the sky during winter, which may impact shade levels.
  • Exposure to wind can increase heating costs, so a sheltered spot may reduce long-term expenses.
  • Position the greenhouse on stable ground with solid foundations. Avoid low-lying areas where cold, damp air may gather.

Shape

The shape can also impact the visual appeal of your garden, especially if visible from key areas like patios or windows.

The greenhouse shape should align with your plant arrangement and growing style.

Lean-to greenhouses attached to a house or wall can benefit from added warmth and insulation.

Consider how easily you can access plants — designs that reduce excessive bending or kneeling improve convenience.

Greenhouse materials

The construction materials to be considered when choosing a greenhouse can be split into 3 main areas.

  1. The greenhouse frame, which is normally constructed of either wood or aluminium, although plastic is increasingly being used.
  2. The glazing, which is either glass or some form of plastic.
  3. The flooring/foundations, which can be made from gravel/concrete/wood.

Hopefully this article has provided you with the key considerations that you must think about when choosing a greenhouse and also links to more detailed information should you want to look at the selection criteria in more detail.

If you found this article helpful, consider sharing it with others who may enjoy the benefits of home gardening.