Read the Light Before You Choose the Plants

Most planting mistakes begin before a plant reaches the soil. A bed looks sunny during a Saturday visit, so it gets treated as full sun. By Tuesday afternoon, the house or a mature tree may have put the whole area in shade. The better starting point is simple: watch the garden for a full day and record what the light actually does.

Look at duration, not brightness

A bright patch is not always a sunny patch. Reflected light from pale walls can make a courtyard feel luminous while direct sun only reaches it for an hour. The reverse happens beneath high tree canopies, where shifting light can support more plants than the word shade suggests. Note when direct sun arrives, when it leaves, and whether it is gentle morning light or strong afternoon heat.

Make a useful light map

You do not need specialist equipment. Sketch the main beds, paths, buildings, fences, and trees. Check the garden in the morning, around midday, and late afternoon. Mark the sunny areas each time. Repeat the exercise in another season if deciduous trees or a low winter sun will change the picture.

• Record direct sun in hours, not impressions

• Notice reflected heat beside walls and paving

• Mark dry shade separately from cool, moist shade

• Keep room for trees and shrubs to grow

Let the conditions edit the plant list

Once the map is honest, plant choices get easier. Reserve the warmest spots for species that need strong light. Use woodland plants where shade and leaf litter already create the right setting. If a favorite plant does not suit the available conditions, move the idea rather than forcing the plant. A smaller, well-matched palette will settle faster and need less correction later.

Light is only one part of the site, but it is the part you can read before spending anything. Pair the light map with notes on soil, drainage, wind, and everyday use. Together, those observations turn a wish list into a garden plan that belongs to the place.