Sandalwood
Santalum album
📖 About this plant
Sandalwood (Santalum album), known as chandan in Hindi, chandhanam in Tamil, and the “royal tree” of India, is a small semi-parasitic evergreen tree in the Santalaceae family, prized for over 4,000 years for its fragrant heartwood — one of the most valuable woods in the world (top-grade sandalwood can sell for $200+ per kg). Native to southern India — primarily Karnataka (Mysore, the sandalwood capital), Kerala, and Tamil Nadu — and parts of Indonesia (especially the lesser Sunda Islands), sandalwood has been central to Indian, Buddhist, Jain, and Hindu religious and cultural life for millennia. It is mentioned in ancient Sanskrit texts (the Ramayana and Mahabharata), used in Egyptian mummification, and was a major commodity in the ancient spice and incense trade with Arabia, China, and Rome. Today, India is the largest producer of true sandalwood (Santalum album), though production has declined due to overharvesting and smut disease — Australia (with the related species Santalum spicatum) has emerged as a major alternative producer. Sandalwood is unique among trees — it is a “hemiparasite,” meaning its roots attach to the roots of neighboring plants (called “host plants”) and draw water and nutrients from them. The tree cannot grow alone — it must have a host (legumes like Acacia, Pongamia, or Casuarina work well). The tree itself grows 4-15 m tall, with dull green elliptical leaves, small reddish-purple flowers, and small purple-black fruits. The valuable part is the heartwood (the inner core of the trunk and roots) — which is rich in essential oil (4-8%) containing mostly alpha-santalol and beta-santalol, responsible for the characteristic soft, warm, woody, sweet aroma that is one of the most prized in perfumery. The wood is ground into a paste used as tilak (forehead religious mark), made into incense sticks (agarbatti — the famous sandalwood incense), carved into religious statues and beads (sandalwood malas are prized for meditation), and distilled into sandalwood oil (used in high-end perfumery — Chanel No. 5, Shalimar, and other classics — and in Ayurvedic and traditional medicine). In Ayurvedic medicine, sandalwood paste is used for skin conditions, fevers, headaches, and as a cooling and calming agent.
🧑🌾 Care requirements
Full sun to partial shade
Moderate; drought-tolerant once established
Moderate (40-70%)
15-35°C
Well-draining red sandy loam; pH 6.0-7.5
Low — host plant provides nutrients
🌐 Common Names
📋 Plant facts
- 🌍 Origin
- Southern India (Karnataka, Kerala, Tamil Nadu) and Indonesia
- 📏 Max height
- 4-15 m
- 📐 Spread
- 2-4 m
- 🕰️ Bloom time
- Spring; small reddish-purple flowers in clusters
- 🎨 Bloom color
- Reddish-purple to dark red
- 🍃 Foliage color
- Dull green elliptical leaves (opposite)
- ⏳ Lifespan
- 60-100+ years
- 📈 Growth rate
- Slow — harvest in 30-60 years
- ☠️ Toxicity
- Non-toxic; safe in culinary and cosmetic use
- 🌱 Propagation
- Seeds (need host plant); root cuttings
🛡️ Health & Safety
Non-toxic; safe in culinary and cosmetic use
Common issues
- Spike disease (most serious — phytoplasma causing yellowing, no flowers, eventual death)
- sandalwood smut (Ceriococcus)
- sooty mold
- stem borer
- defoliators
- root rot
- theft (sandalwood is so valuable that trees are often stolen — a unique "pest" problem)
- inadequate host plants (the tree will not thrive alone)
💡 Care tips
- Grow from fresh seeds (preferred) — sandalwood seeds lose viability quickly, so plant within a month of harvest.
- To germinate: soak seeds for 24 hours, then sow in seed trays with the host plant (Acacia, Pongamia, Casuarina, or any compatible legume) — sandalwood roots must attach to the host roots to survive.
- The host can be planted first and sandalwood seeds sown nearby, or both can be planted together.
- Seedlings are slow-growing — 30-50 cm in the first year.
- Transplant to a permanent location with the host plant already established — plant the sandalwood seedling within 30-50 cm of the host so the roots can attach.
- Plant in full sun to partial shade in well-draining red sandy loam (the classic Mysore red soil produces the best sandalwood).
- Avoid heavy clay or waterlogged soil.
- Water moderately when young — sandalwood is drought-tolerant once established but benefits from occasional deep watering.
- Do NOT overwater — root rot is a serious issue.
- Fertilize sparingly — the tree gets most nutrients from the host plant.
- Prune only to remove dead branches.
- The tree is hemiparasitic — its roots attach to host roots via specialized structures called "haustoria" and draw water and nutrients.
- This does not significantly harm the host if the host is well-established, but the host should be hardy.
- The tree takes 30-60 years to develop full heartwood oil content — though some oil can be harvested from 15-year-old trees.
- Harvest by uprooting the entire tree (the root heartwood is the most valuable part, often 2-3x more oil-rich than the trunk).
- The harvested wood is ground into powder, soaked in water, and steam-distilled to extract the essential oil (yields 4-8% of wood weight).
- For home gardeners, sandalwood is a long-term investment — plant a few seedlings with hosts, mark the location, and let them grow for decades.
- In India, sandalwood cultivation on private land was previously restricted by the government (all sandalwood was considered government property) — but regulations have been relaxed in many states (Karnataka, Tamil Nadu, Kerala) to encourage private cultivation.