Philippine tung Care (Reutealis trisperma)

This fast-growing oil tree thrives in bright, warm conditions with consistent sun exposure.

• Provide 6–8 hours of direct sun daily, ideally with strong morning sun and some light afternoon shade in hot climates.
• Young Philippine tung trees benefit from 30–50% filtered shade cloth during their first 1–2 years to reduce leaf scorch.
• Insufficient light leads to sparse branching and slower growth, while intense all-day summer sun can burn foliage in dry, exposed sites.

This species prefers evenly moist, well-drained soil rather than constant saturation.

• Irrigate when the top 3–5 cm of soil feels dry, applying deep water so the upper 20–30 cm of soil is moistened, then allow slight drying.
• Reduce watering frequency in cool or rainy seasons and increase during hot, windy weather, using soil feel as the main guide.
• Persistent wet soil, sour smell, or yellowing soft leaves suggest overwatering; crisp leaf edges, dull foliage, and slow growth point to underwatering in Reutealis trisperma.

This tropical tree grows best in consistently warm, frost-free climates.

• Optimal growth occurs around 70–86°F (21–30°C), with steady warmth supporting rapid shoot and trunk development.
• Trees are sensitive to cold; avoid exposure below 45–50°F (7–10°C), and protect young plants from any frost, which can kill tender shoots.
• Mature plants handle short heat waves up to about 95°F (35°C) if soil moisture is stable, but prolonged extreme heat with dry winds can stress and defoliate branches.

This species handles a wide humidity range but grows best with moderate air moisture.

• Aim for 40–60% humidity for steady growth of Philippine tung foliage.
• Tolerates short periods of drier air, but leaf edges may brown and tips curl under prolonged low humidity.
• Increase humidity with grouped plants, a nearby humidifier, or an evaporative tray rather than misting foliage directly.

Reutealis trisperma prefers deep, well‑drained, moderately fertile soil with good structure.

• Use a loamy mix with roughly equal parts garden loam, coarse sand, and compost to balance moisture retention and drainage.
• Ensure fast drainage; avoid heavy clay or compacted sites where water pools around the root zone.
• Keep pH slightly acidic to neutral (pH 6.0–7.0) for best nutrient uptake and root activity.
• Improve aeration by incorporating coarse sand or fine bark, breaking up any hardpan layer before planting.

This tree can be grown in large containers for the first years if the pot is managed carefully for stability and drainage.

• Choose a tall, heavy container to counter the developing woody top growth and reduce tipping in wind.
• Select a pot material with moderate weight, such as thick-walled clay or concrete, to balance moisture loss and stability.
• Elevate the container on feet or blocks so drainage holes stay clear and excess water leaves the root zone quickly.

Reutealis trisperma benefits from moderate, targeted feeding during its active growing season.

• Use a balanced granular or slow-release NPK fertilizer, or well-rotted compost, on established trees in spring.
• Feed 1–2 times per growing season, adjusting rates to soil fertility and tree vigor.
• Apply at half the label strength for container plants, and water thoroughly after feeding.
• Avoid fertilizing in late fall or winter to prevent soft, frost-prone growth in Philippine tung.

Reutealis trisperma responds well to light structural pruning that maintains a strong framework.

• Carry out main pruning in late winter or very early spring, before vigorous new growth begins.
• Remove dead, diseased, crossing, or storm-damaged branches using clean, sharp bypass pruners or a pruning saw.
• Thin congested interior branches to improve airflow and light penetration, encouraging balanced canopy development.
• Limit heavy cuts; instead, shorten overly long shoots gradually to refine shape and manage height.

This tree is usually grown in the ground, so management focuses on careful transplanting rather than frequent repotting.

• Transplant young trees in late winter or early spring when soil is workable and temperatures are mild.
• Look for roots circling the container, waterlogging, or stalled growth as signs a nursery plant needs a larger planting space.
• Disturb the root ball minimally; gently tease outer roots, plant at the same depth, and water slowly and deeply.
• Mulch a 5–8 cm ring around the root zone after transplanting to conserve moisture and reduce temperature swings.

Reutealis trisperma is most often propagated from seed under warm, controlled conditions.

• Collect fully mature seeds and sow in late spring in a free-draining, slightly fertile mix.
• Soak seeds for 12–24 hours to improve moisture uptake, then sow about 2–3 cm deep.
• Maintain 70–80°F soil temperature and consistent, light moisture until germination.
• Provide strong light, good air movement, and gradual hardening-off outdoors once seedlings are sturdy.

This subtropical tree has low frost tolerance and needs thoughtful winter care in cooler climates.

• In regions below about 30–32°F, treat as tender and plan for protection or container culture.
• Mulch 5–10 cm deep around the root zone in late fall, keeping mulch away from the trunk.
• Wrap young trunks with breathable frost cloth or burlap during freezing nights to reduce bark damage.
• Move container-grown plants into a bright, frost-free space and reduce watering while growth is slow.