Garden Light Requirements Explained: Full Sun to Full Shade
Published: August 27, 2024 | Updated: October 27, 2026
Understanding how much sunlight your garden receives is one of the most important steps in choosing the right plants. Terms like full sun, part shade, and full shade describe different growing conditions, but their definitions can vary slightly depending on the source.
Here's a simple guide to what these common garden light requirements mean.
Full Sun
6 or more hours of direct sunlight per day.
Full-sun plants grow best in locations that receive at least six hours of direct sunlight daily. Many flowering plants and shrubs perform even better with eight or more hours.
Part Sun
Approximately 4–6 hours of direct sunlight per day.
Part-sun plants need several hours of direct sunlight but don't necessarily require all-day exposure. They generally prefer more sunlight than plants labeled part shade.
Part Shade (Partial Shade)
Approximately 2–4 hours of direct sunlight per day.
Part-shade plants appreciate some direct sunlight but often benefit from protection against intense afternoon sun, especially in warmer climates.
Some plants also thrive in bright, filtered light beneath the canopy of deciduous trees.
Full Sun to Part Shade
Plants that tolerate a range of sunlight conditions, from full sun to partial shade.
This label indicates that a plant can grow in different light conditions, but it doesn't necessarily perform equally well throughout that range.
For example, a flowering shrub may produce more blooms in full sun while benefiting from afternoon shade in a hot climate.
Always consider the needs of the particular plant and your local growing conditions.
Full Shade
Generally fewer than 2 hours of direct sunlight per day.
Full shade doesn't mean complete darkness. Many shade-loving plants thrive in locations that receive little direct sunlight but still have plenty of indirect daylight.
Very deep shade, such as beneath dense evergreen trees or between buildings, can be challenging even for shade-tolerant plants.
Dappled Shade
Sunlight filtered through leaves and branches, creating shifting patches of light and shade.
Dappled shade is common beneath deciduous trees. The amount and intensity of sunlight change throughout the day and growing season.
Many woodland plants thrive in these conditions.
How to Determine Your Garden's Light Conditions
Observe your planting area several times throughout a clear day during the growing season. Note when direct sunlight reaches the area and when it becomes shaded.
Remember that morning sun is generally gentler than afternoon sun, and sunlight patterns change as the seasons progress.
One final tip: Sunlight requirements are guidelines, not guarantees. A plant's ideal exposure can vary depending on the species, cultivar, climate, and growing conditions.