Buying a Freestanding Greenhouse: Choose Its Position First
Greenhouse buying guide
Choosing a freestanding greenhouse begins with the place it will occupy, not with a photograph or a model name. Sun, ground condition, wind, water movement and the route to the entrance can all affect whether a position works in day-to-day use. Before ordering, mark out the available area, observe it at different times and compare your notes with the exact product information. A site check helps you shortlist suitable options and identify any preparation or access questions that need answering first.
Before ordering 1
Measure the usable area before comparing models
Measure the usable area rather than relying on a rough estimate of the patch you have in mind. Mark where the greenhouse corners would sit and include any boundary, path, drain, bed, tree or fixed garden feature that affects the position. If the plot is irregular, note the narrowest points as well as its longest and widest spans; a rectangle that fits at one end may not fit at the other. Record dimensions in metres and label which edges are fixed. This is the available area for the structure, not yet proof that a particular model will fit.
Check each product listing for the complete external footprint and find out what is included in any stated measurement. The base, eaves, gutters, opening doors and access space may affect the area needed, but do not assume those details from a photograph. For each option, including the Bloomcabin Prestige Greenhouse, note the published dimensions and any stated clearance or base requirements beside your own measurements. Mark overhead obstructions such as low branches, roof overhangs or washing lines separately. If information is absent or unclear, ask the retailer before ordering. A paper plan or tape on the ground makes discrepancies easier to spot than comparing a model name with a garden photograph. Leave room to walk around the structure rather than measuring right up to every boundary.
Check sunlight at different times of day
Check sunlight at the proposed position at more than one point in the day. Visit in the morning, around midday and later in the afternoon, noting where direct light reaches and where shade falls. Repeat the observation on several days if changing cloud makes the pattern hard to read. A quick sketch with times marked beside the shadows is useful; photographs from the same spot can provide a record too. Separate passing cloud from a shadow cast by a building, hedge or tree, as only the latter tells you about a fixed obstruction.
Use that record alongside your growing plans. A position with more direct light may matter for some crops, while a less sunny site could still suit other plans; there is no single compass direction that makes every garden position right. Buildings, fences and slopes alter local conditions, and the sun’s path changes through the year. The question at this stage is how much light reaches your actual footprint, not what a product photograph looks like. Apply the same observations when comparing any listing, including the Bloomcabin Orangerie, rather than assuming a model name or image reveals site conditions. If the brightest patch is also wet or awkward to reach, note that trade-off rather than letting sunlight decide alone.
Before ordering 2
Account for moving shade and future growth
Map fixed shadows and seasonal ones separately. A house, garage or tall fence casts a predictable shadow, but its position changes during the day; check whether it crosses the proposed greenhouse site at different times. A hedge can also change the light reaching a spot as it grows. Make a rough plan showing the main obstacles and the times when they shade the area. This helps distinguish a genuinely open position from a patch that happens to be sunny during one short part of the day.
Trees need a longer view. Deciduous branches may leave a site open in winter but shade it in leaf, while evergreen canopies may block light throughout the year. Consider falling leaves, branches, roots and future growth when choosing a position, without assuming that pruning or root cutting will solve a problem. Leave tree work to appropriate professionals and check the proposed groundworks before digging near roots. Keep your shade notes beside the other product information: an image of Classic Plus 385 cannot show how a tree’s shadow falls in your garden.
Check the ground and the required base
Ground that looks flat from a window may still have a noticeable slope or hollows. Walk over the proposed footprint and inspect it from several angles; a straightedge or spirit level can reveal small changes that are easy to miss by eye. Note whether the ground is firm, soft or made up of different surfaces, such as paving beside soil. A sloping site is not automatically impossible, but it changes the preparation needed. Do not treat an uneven area as level simply because the greenhouse can be manoeuvred into position.
Before ordering, find the manufacturer’s exact base and installation instructions for the model, including what needs to be prepared and whether the support area must meet stated requirements. Do not assume a base comes with the greenhouse or that lawn, paving or a masonry platform is acceptable. A name such as Pyramid Greenhouse for Masonry Bases is not a complete specification for preparation, dimensions or anchoring; check the actual product information. If levelling involves substantial excavation, retaining work or a technical foundation, ask a suitably qualified professional about the site. Keep the finished base within your measured area, with space for the required access around it.
Before ordering 3
Assess wind exposure at the exact site
Judge wind at the intended position, not only from the shelter of the house. An open lawn, a gap between buildings and an exposed garden edge can feel different from a sheltered corner; observe the area in breezy conditions and note which directions seem most exposed. Fences, walls and hedges may reduce wind in some places, but they can also channel gusts or create turbulence. Proximity to a screen is not proof that a greenhouse can be safely installed there. Take note of overhanging branches and other objects that could affect the site.
Ask the manufacturer what exposure, anchoring and base conditions are specified for the exact model, and check whether the proposed ground can meet them. Do not infer wind performance from a frame description, model number or photograph. When comparing pages, including the Aluminium Classic Greenhouse, look for the maker’s information on installation conditions rather than reading performance into a name. If wind limits or fixing details are unclear, request clarification before you commit. Where the garden is particularly exposed or installation is complex, seek advice from a qualified installer instead of guessing.
Look for runoff and standing water
Rain reveals problems that a dry-day inspection can miss. After a period of rain, look for puddles, soft ground, water flowing down from a higher part of the garden and places where runoff from a roof collects. A low hollow may stay wet even when nearby lawn seems fine. Visit the intended location more than once if possible, because one snapshot cannot show how the ground behaves in every spell of weather. Add wet patches and obvious flow paths to your site sketch before comparing models.
Choose a position that does not sit in a natural run-off channel, and consider where water could move without collecting at the entrance or flowing towards the house or a neighbouring garden. Do not assume a new base or a layer of surface material will fix a drainage problem; the right response depends on the site. If water regularly collects, investigate the cause and ask a qualified groundworks or drainage professional whether the location needs work. If you plan to collect or direct roof water, check the model’s information and allow for a route that does not block paths.
Before ordering 4
Allow room for the entrance and approach
Set out the entrance before deciding that the footprint fits. Check which side the door is on in the model information, how it opens and whether the chosen position leaves room for it to move fully. The opening arrangement is model-specific, so do not assume that a gap shown in a photograph is the required clearance. Mark the door area on the ground, then stand there with enough room to enter, turn and carry trays or tools without stepping into a bed or against a wall.
Plan a usable route from the gate or house to the entrance, including existing paths and any turns that a wheelbarrow or bulky materials need to negotiate. Space beside and behind the greenhouse may also matter for cleaning, repairs or assembly; check the maker’s guidance rather than assuming a very narrow gap is workable. The aluminium lean-to greenhouse is a different placement form, so do not copy its layout as a guide to access around a freestanding model. Compare the entrance and clearances for the exact option you are considering. If two positions receive similar light, practical access can help settle the choice.
Plan water and service routes
Think about how you will reach the greenhouse for ordinary tasks. If you water by hose, trace the route from the tap to the proposed position and notice whether it crosses the doorway or a main path. A nearby water source can be convenient, but it should not leave the entrance obstructed or create a trip hazard. If you plan to collect roof water, check whether the product information covers gutters and outlets. Do not assume that these are included simply because they appear in a photograph.
Consider routine work around the outside too: cleaning, checking the base and clearing leaves may require space that is not obvious on a footprint plan. If ground needs to be dug, note known service routes and ask the relevant utility provider or a qualified professional before disturbing it. Any electrical fittings or powered equipment need to be planned with a qualified electrician; do not improvise a cable route. Keep water, maintenance and service access visible on your site plan, rather than recording only the greenhouse outline.
Before ordering 5
Check that the model is intended to be freestanding
Confirm that the model is intended for a freestanding position, rather than choosing a wall-based form because a boundary happens to look convenient. Freestanding does not mean that a greenhouse needs no base, anchoring or clearance: those details are specific to the manufacturer’s instructions for that model. Nor should a greenhouse designed for a wall be treated as freestanding by moving it away from the wall, or the reverse, without confirmation. The placement type affects the plan you measure and how the structure relates to nearby buildings.
Product titles can help distinguish formats, but they cannot answer site-specific questions. For instance, wall-based T-model greenhouse describes a different configuration; use its page as a contrast, not as evidence of what a freestanding greenhouse requires. If your preferred site is beside a wall, check whether the maker permits that position and what clearances or fixing arrangements apply. Also consider nearby windows, doors, downpipes and eaves: they should not be blocked, struck or made difficult to maintain. Never use a wall, fence or shed as improvised support.
Compare the finished site plan with each product listing
Before placing an order, bring your site notes together in one comparison sheet for each model. Include the external dimensions, base and anchoring requirements, clearances, door opening, sun record, slope, drainage and wind exposure. Mark what is confirmed by the product information, what comes from your own observations and what still needs an answer. This avoids mixing an assumption from one model with a measurement from another. If a specification is missing, ask before ordering rather than treating the most convenient interpretation as fact.
Check the route from the access point to the site and ask the retailer what delivery and assembly access is required, if applicable. A greenhouse can fit the garden yet be difficult to bring through a narrow gate or around a sharp turn. Make sure the intended assembly area can be reached without moving obstacles that cannot be shifted. When comparing pages, such as the aluminium greenhouse listing, use the same checklist and rely only on the information stated for that model. If you plan to prepare the ground later, measure for the finished base and path, not just the current patch of lawn. Resolve any uncertainty about site preparation with the supplier or a qualified professional before choosing.
Frequently asked questions
How much sun does a freestanding greenhouse need?
There is no single number of sunlight hours that suits every crop and location. Record where direct sun and shade fall at different times, then consider what you plan to grow. If buildings or trees cast long shadows, repeat the check at another time of year if possible. Choose a position that also meets the selected model’s placement guidance.
Does the ground need to be level before I order?
You should know whether the proposed site is level and what preparation the selected model requires before ordering. A small change in level may be manageable, but do not assume that a sloping or uneven surface can be corrected with the greenhouse base. Check the manufacturer’s instructions and seek professional advice if substantial ground preparation is needed.
Can I put a freestanding greenhouse beside a wall or fence?
Possibly, but do not assume that a wall or fence can provide support or shelter, or that a freestanding model can be attached to it. Check the manufacturer’s placement and clearance guidance. Also consider shadows, runoff, access and any gusts created around the surrounding structures.
How can I assess wind exposure in my garden?
Observe the proposed position in breezy conditions and note whether it is open, sheltered or affected by gusts channelled between buildings or fences. A hedge or wall is not proof that the spot is suitable. Check the exact model’s installation and anchoring guidance, and get advice from a qualified installer if the site is particularly exposed.
What should I measure before buying a greenhouse?
Measure the available footprint and note the narrowest points, overhead obstructions, door clearance and route around the structure. Compare those measurements with the model’s complete external dimensions and stated base requirements. Also check access from the gate or house, since the greenhouse may need to be brought through the garden and assembled on site.
A suitable position is one that meets the selected model’s requirements and works with your garden’s light, ground, wind, water and access conditions. A site sketch, observations in different weather and a careful comparison with the product information give you a sound basis for choosing. If the position depends on substantial groundwork or uncertain fixing, resolve that question with a qualified professional before ordering. Then the greenhouse you choose can be matched to the site you have measured, rather than to an assumption about how it might fit.
