tea tree grows best in full sun, with several hours of direct sunlight each day.
Light Preference
Full Sun
Melaleuca alternifolia is native to eastern Australia, where it grows in open, wet flats and along watercourses with strong sun exposure. These sites are not shaded forest understories; plants usually receive long periods of direct light, with only brief filtering from surrounding vegetation. In cultivation, this background translates to a high-light plant that tolerates heat and open exposure. Preferred light is full sun.
tea tree needs about 6–8 hours of full sun daily, including at least 6 hours of direct sun when grown outdoors.
Established plants tolerate full sun, including warm afternoon exposure, when they have been grown in bright conditions.
It can grow with 4–6 hours of direct sun, but growth and flowering may be lighter than in full sun.
Bright shade or low indoor light is usually too weak and can lead to thin, stretched growth.
Excess light is usually linked to sudden exposure or reflected heat.
Leaves may develop pale tan or gray areas on the most exposed side after a rapid move into stronger sun.
Tender new shoots can look dry or singed when intense afternoon sun follows lower-light growing conditions.
Damage often appears on the side facing hot pavement, walls, or unfiltered western exposure.
New growth may look dull rather than fresh when light intensity rises faster than the plant can adjust.
Shift the plant out of reflected heat and reintroduce stronger sun over 1–2 weeks. Use light afternoon filtering during the transition.
Low light is a common problem when this species is kept in shade or indoors.
New stems may grow longer and thinner as they reach toward brighter light.
Growth can become open, with wider spacing between leaves and fewer dense shoot tips.
Flowering may be limited or absent when the plant receives only partial light for long periods.
Active-season shoots may stay short and weak despite suitable temperatures.
Move it to a brighter outdoor position with more direct sun. Increase exposure in stages if it has been shaded.
If ideal full sun is not available, choose the brightest site that still gives 4–6 hours of direct sun. Treat this as a compromise, not a true low-light setup.
Improve exposure by reducing shade where possible, and rotate container-grown specimens every few weeks so each side receives direct light.
Avoid deep shade under eaves or dense structures because it will not meet Melaleuca alternifolia light needs.
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The best light is full sun, with strong direct exposure for most of the day. For tea tree light requirements, partial sun is tolerated, but shade is not a good long-term setting.
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