A parasol placed without thought gives shade for about ninety minutes and stands in the sun for the rest of the day. Placing one properly takes ten minutes of observation and makes the difference between a decorative object and a useful one.
The sun path across a British garden
Britain sits at a high latitude, which changes things. In midsummer the sun rises well north of east, tracks high across the south, and sets well north of west, giving very long days with the sun reaching perhaps sixty degrees above the horizon at noon in southern England.
The practical consequence is that midday shade falls almost directly beneath a parasol, while morning and evening shade falls long and to the side. A parasol positioned to shade a seating area at one o'clock will not shade it at four, which is when most people actually sit outside.
Decide what time of day matters
This is the decision that governs everything else, and it is worth being deliberate about.
If you use the garden at lunchtime, the parasol goes almost directly over the table. If you use it in the late afternoon and evening, which is far more common in Britain, the parasol needs to sit to the west of the seating so the lengthening shadow falls across it.
Spend a sunny day noticing where the shade actually is at the hour you care about, then place accordingly.
Angle, and adjusting through the day
A parasol held vertical shades the ground beneath it. Tilted toward the sun, it shades an area to the side. Being able to adjust the angle roughly doubles the useful hours.
Traditional Balinese parasols are simpler in construction than mechanical garden parasols, so the adjustment is more likely to be moving the whole parasol than tilting a mechanism. That is worth knowing before you set one in concrete.
Height over seating
The canopy should sit above head height for a seated person with clearance, so nobody ducks. Around two metres from the ground to the lowest edge of the canopy is comfortable for a seating area.
Too low and it feels oppressive and blocks the view outward. Too high and the shade falls in the wrong place entirely, since a high canopy casts its shadow further away.
Wind, and choosing a sheltered position
The single most important siting factor for a decorative parasol in Britain, and the one most likely to determine whether you still own it in September.
Prevailing wind in most of Britain comes from the south west. A parasol sited with shelter on that side, from a wall, a fence, a hedge or the house itself, is dramatically less exposed than one in the open.
Avoid siting a parasol in a gap between buildings or at the end of a passage, where wind funnels and accelerates. That is the worst position in any garden and it looks perfectly calm on the day you choose it.
Bases and fixing
Three options, with different trade offs. A weighted freestanding base is the most flexible and allows repositioning through the season, which suits the tilting problem above. A ground spike is more secure and less movable. A parasol set into a pot with concrete is the most stable and the least adjustable.
Whichever you choose, err heavily toward stability. A parasol that blows over damages itself, the frame and quite possibly whatever it lands on.
Two smaller against one large
Worth considering for a long seating area. Two smaller parasols at either end give shade across a longer span for more of the day than a single large one in the middle, and each is individually less affected by wind.
They are also easier to take down quickly, which matters given how often that needs doing.
The indoor option
If your garden is genuinely exposed, or you want the look without the maintenance, our indoor decor parasols at 40cm are made for interiors and conservatories, where none of the wind and weather considerations apply.
Our guide to how long a Balinese parasol lasts covers realistic expectations for outdoor use.
Questions people ask
Where should I put a garden parasol for afternoon shade?
To the west of the seating area, so the lengthening afternoon shadow falls across it. A parasol placed directly overhead only shades properly around midday.
How high should a parasol canopy be?
Around two metres from the ground to the lowest edge over a seating area, so a seated person has clearance without the canopy blocking the outward view.
How do I stop a parasol blowing over?
Site it with shelter on the south west side, which is the prevailing wind direction in most of Britain, avoid gaps between buildings where wind funnels, and use a base heavier than feels necessary.
Is one large parasol better than two small ones?
For a long seating area, two smaller ones give shade across a longer span for more of the day, are individually less wind affected and are quicker to take down.
Can I set a parasol in concrete?
You can, and it is the most stable option, but it removes the ability to reposition through the season, which matters because shade moves considerably between midday and evening.
