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How do you know if a sun is partial or full?

Author

Emily Sparks

Published Jan 07, 2026

“Full sun” definitely means at least six hours per day, but some plants such as vegetables really need eight to ten hours per day. “Partial sun” or “partial shade” means that the plant needs 3-6 hours of direct sun per day. The terms sometimes are used interchangeably.

How do you find partial sun?

To determine the amount of sunlight, look at a specific area of your yard at one- to two- hour intervals, starting with when the sun has risen fully until dusk. Sketch out your yard on a sheet of paper and number each section, advises Get Busy Gardening.

How do you know if your full sun?

Each plant has different requirements that can be found on the seed packet or plant tag. Sometimes plant tags won't say specific hours of sunlight, but here is a general guide: Full Sun: 6+ hours. Partial Sun/Partial Shade: 3-6 hours.

What is partial to full shade?

Less than the optimal sunlight and the grass become stressed. Partial sun and partial shade usually mean 3-6 hours of sun/shade each day, preferably morning and early afternoon sun. Full shade is bright light but little or no direct sun; what we often refer to as dappled light.

What is the difference between partial sun and partial shade?

Plants for partial sun will do well in a location where they receive a break from the sun each day. They like the sun but will not tolerate a full day of it and need at least some shade each day. Partial shade refers to less than four hours, but more than one and a half hours of sun.

42 related questions found

Is morning sun or afternoon sun better for plants?

Full sun plants don't necessarily need all-day sunlight, but they generally need at least six hours. Afternoon sun tends to be stronger than morning sun, so if you know you can only offer a plant six hours of sun exposure, plant it in a spot that gets most of its sunlight in the afternoon.

Does full sun mean direct sun?

What is Full Sun? Full sun is defined as six or more hours of direct sun per day. If you live in a newly constructed development or out in the country where there are few trees, your garden may not see any shade at all during the day.

Is afternoon sun good for plants?

Most plants requiring either part sun or part shade do well in filtered light for most of the day, or direct sun during the morning or afternoon. Keep in mind that several hours of afternoon sun are more intense and create more heat than morning sun.

What direction is full sun?

The sun rises in the east and sets in the west. Since we live in the northern hemisphere, the tilt of the earth's axis puts the sun in the southern sky as it crosses from east to west.

Can full sun plants grow in shade?

Many plants that don't insist on full sun will grow well in light shade but often with reduced flowering. Partial or semi-shade: Many sun loving plants will survive in partial shade but usually with markedly reduced flowering. Shade loving plants will thrive.

How do I test my yard for sun exposure?

The direction your garden faces helps you determine when it's exposed to the sun, and how bright that sunlight is.

  1. South-facing gardens get the most sun exposure. From sunrise to sunset, the garden is lit up (as long as it isn't shaded by trees). ...
  2. North-facing gardens get the least amount of sun exposure.

How do I measure my yard for sunlight?

To measure hours of sunlight in your garden, start early in the morning right after the sun rises. Take note of the garden sunlight exposure at that time. Then make a note of whether it's in full sun, partial shade, filtered/dappled sun, or full shade.

Do north-facing windows get light?

North-facing windows receive the least light and are the weakest and coolest. East-facing windows receive light in the morning and are weak and cool. West-facing windows receive light in the afternoon and are strong and hot.

Is north facing garden good?

North-facing gardens

This garden will have areas of shade for much of the day. Though, north-facing surfaces, like back of the house, will get decent evening sun from May-Oct. All but the most heat-loving plants enjoy midday shade, which also stops pale colours burning out.

Which way does my garden face?

The more light your garden receives, the better.

  • Gardens that face north receive the least light and can be damp.
  • Gardens that face south receive the most light.
  • Gardens that face east receive light in the morning.
  • Gardens that face west receive light in the late afternoon and evening.

How do you tell what facing garden you have?

The easiest way to tell if your garden is south facing is to stand in it, facing to the rear and use a compass or app on your phone. If the compass says 'south', your garden is south facing. Alternatively, if you want to know what direction a garden faces at a house you're keen to buy, you can find out on Google Maps.

Which direction gets less sun?

The sun travels East to West along a curved path that swings South. During the winter, the sun appears lower in the sky, but south-facing windows still get plenty of direct light.

Is north facing considered full sun?

The exterior wall of a house facing due north receives no direct sun at all in winter, but full sun in summer. In spring and fall, the sun exposure slowly shifts from between the two extremes.

Which way does my house face?

Go to the front door of your home and open the compass app. With your phone facing forward, read the direction that the compass is measuring (this should be shown in °). The compass may also show the basic directions like North, East West and South. If the reading is between 270° and 90°, your house is north-facing.

How much sun is partial sun?

“Partial sun” or “partial shade” means that the plant needs 3-6 hours of direct sun per day. The terms sometimes are used interchangeably.

What plants tolerate hot afternoon sun?

7 Heat-Tolerant Plants that Love the Sun

  • Lantana.
  • Lemon Verbena.
  • Cosmos.
  • Marigold.
  • Geranium.
  • Salvia.
  • Sedum.

Why is afternoon sun not good?

Not only is getting vitamin D around midday more efficient, but it might also be safer than getting sun later in the day. One study found that afternoon sun exposure may increase the risk of dangerous skin cancers ( 9 ).

Do Tomatoes need full sun?

Tomato plants need at least six hours of full sun exposure daily, but if you want to achieve the best results, increase the yield and grow sweeter fruits, you might aim to give your tomato plants at least eight hours of sun per day.

Is light through a window considered direct sunlight?

Is light through a window considered direct sunlight? It depends. If the sun's rays directly hit the plant – such as through a south-facing window – this is considered direct sunlight. If the sun is bright but the rays don't directly hit the plant, this is considered indirect light.

What does partial sun mean for indoor plants?

Partial sunlight is when the light is direct only during certain times of the day, such as in the morning or late afternoon. This is common in east-facing windows that receive a few hours of morning light, followed by a few hours of indirect afternoon sun.