Full sun is the easiest light condition to plan for once you know what it actually asks of a plant: six or more hours of direct sun creates fast growth and heavy flowering, but it also means more heat, faster-drying soil and more UV stress than almost any other spot in the garden. This guide covers what counts as full sun, how to pick plants that will thrive rather than just survive there, and a shortlist of reliable choices across flowers, shrubs, ground covers and edibles.
What counts as “full sun”?
- Full sun — 6+ hours of direct, unobstructed sunlight a day, typically including the strong midday hours.
- Part sun / part shade — roughly 3-6 hours, often morning or afternoon only.
- Shade — under 3 hours of direct sun, or bright but indirect light all day. See our plants for shade guide for that condition.
- Reflected/intensified sun — a south-facing wall, paved courtyard or gravel bed reflects extra heat and light, effectively pushing a full-sun spot even hotter. Factor this in near hardscaping.
In cooler, cloudier climates, full-sun plants are usually easy anywhere they get open sky. In hot, dry or tropical climates, the same plants can suffer in the most intense afternoon sun and often do better with a little relief in the hottest hours — check the individual plant profile rather than assuming full sun is always best everywhere.
How to choose the right full-sun plant
- Water needs, not just light — full sun is a light requirement, not a water one. Some full-sun plants (sunflowers, dahlias, zinnias) want regular watering; others are also drought tolerant and prefer to dry out between waterings. Match both, not just the light.
- Climate and hardiness — check whether a plant is hardy where you garden, or grown as a warm-season annual.
- Soil drainage — most full-sun flowering plants dislike waterlogged soil, especially in winter. See improving soil drainage if your site is heavy or slow-draining.
- Mature size and role — a full-sun border works best mixing height: taller plants like sunflowers or dahlias at the back, mid-height flowers through the middle, and low ground covers at the front.
- Heat tolerance in hot climates — in genuinely hot summers, watch for scorch on thinner-leaved plants; see heat and sun stress if leaves start browning at the edges.
Full-sun flowering plants & perennials
- Sunflower — the classic tall full-sun annual; needs regular water while establishing.
- Dahlia — long summer-to-frost flowering; wants full sun and steady moisture, not drought.
- Zinnia — fast, easy, heat-loving annual color from seed.
- Black-eyed Susan (Rudbeckia) — tough, long-blooming prairie perennial.
- Coreopsis — cheerful, low-maintenance, tolerates poorer soil.
- Petunia — reliable full-sun bedding and container color all season.
- Echinacea (coneflower) — deep-rooted, cold-hardy prairie perennial.
Full-sun shrubs
- Lantana — heat-loving, long-flowering, popular with pollinators.
- Oleander — tough, long-flowering shrub for warm climates. Note: all parts are highly toxic — site with care around children and pets.
- Cistus (rock rose) — Mediterranean shrub built for hot, sunny, well-drained sites.
Full-sun ground covers
- Creeping thyme — low, fragrant, walkable, thrives in hot, sunny, well-drained soil.
- Gazania — bright daisy flowers that love heat and sandy soil.
- Delosperma (ice plant) — succulent mat that flowers heavily on a hot, dry bank.
Full-sun vegetables & edibles
Almost all fruiting vegetables need full sun to crop well — tomatoes, peppers and cucumbers among them. See the vegetable growing hub for crop-by-crop guides, and planning a vegetable garden layout for getting the sun exposure right bed by bed.
Common mistakes
- Assuming full sun means no water — only true for the drought-tolerant subset; many full-sun favorites (dahlias, zinnias, sunflowers) need regular watering to perform.
- Ignoring reflected heat — a full-sun spot against a south-facing wall or paving can run hotter than the same light level in open lawn.
- Planting shade lovers in full sun — thin, soft-leaved plants bred for shade will scorch; check the plant’s actual light preference rather than assuming more sun is always better.
- No afternoon relief in very hot climates — in genuinely hot summer climates, some full-sun plants do better with light afternoon shade.
Quick questions
How many hours is full sun? Six or more hours of direct sunlight a day, usually including some midday sun.
Do full-sun plants need less watering? Not necessarily — light and water needs are separate. Check each plant individually; drought tolerance is a separate trait some full-sun plants have and others don’t.
What if my full-sun spot is also very hot and dry? Favor the drought-tolerant end of this list, or see our dedicated drought-tolerant plants guide.
Related guides
- Plants for shade · Drought tolerant plants · Heat & sun stress · Browse all full-sun plants · More plant lists & comparisons
Not sure how much light this needs? See our light requirements for houseplants guide.
