Autograph Tree

Also known as

Pitch Apple, Scotch Attorney, Copey

Fast grower Toxic to Humans Toxic to Pets

Keep this plant’s care guide close at hand.

About Autograph Tree

Clusia rosea, commonly called Autograph Tree for its thick, leathery leaves that can be inscribed without harming the plant, is a rugged evergreen native to coastal parts of the Caribbean. In nature it may begin life epiphytically and develop into a large shrub or small tree, with a strong, sculptural form and opposite pairs of glossy, dark green leaves. Flowers are waxy, white flushed with pink, and lightly fragrant, though indoor flowering is uncommon; plants are typically dioecious. Outdoors in the tropics it tolerates wind, salt spray, and bright sun, making it a favorite for coastal hedges. As a houseplant it thrives in bright light, moderate humidity, and a well-drained, slightly acidic to neutral potting mix. Growth is steady and compact, and the plant is forgiving of brief drought but sensitive to chronic waterlogging. Milky latex sap can irritate skin, and the fruits’ sticky seeds are bird-dispersed.

Taxonomy

Scientific name

Clusia rosea

Genus

Clusia

Family

Clusiaceae

Order

Malpighiales

Properties & Requirements

Difficulty: Easy

Humidity: 40% - 85%

Soil pH: 6.2

Repot Every: 78 weeks

How to care for Autograph Tree

Water

Allow the top 2–5 cm of the potting mix to dry between waterings, then water thoroughly until excess drains. Empty saucers so roots never sit in water. Clusia’s thick leaves store moisture, so it tolerates brief drought better than soggy soil. In bright, warm conditions you may water weekly; in lower light or winter, extend intervals to every 10–21 days. Use room‑temperature, low‑mineral water if possible, and flush the mix periodically to avoid salt buildup.

Light

Provide bright, indirect light to full sun. Indoors, place near an east or south/west window with a few hours of gentle direct sun; filtered midday sun prevents leaf scorch behind glass. Too little light leads to lanky growth and sparse leaves. Outdoors in the tropics or subtropics, it thrives in full sun to light shade and is highly salt- and wind-tolerant. Variegated forms need more light to maintain color but still appreciate protection from harsh midday rays.

Nutrients

Feed during active growth (spring through early fall) with a balanced, slow-release fertilizer or a liquid feed at half strength every 4–6 weeks. Aim for a 3-1-2 or 10-10-10 profile, and include micronutrients; Clusia can show iron/manganese deficiency in high-pH media. Do not fertilize in winter. Flush the pot thoroughly every few months to prevent salt buildup. In coastal or alkaline areas, supplement with chelated iron if new leaves yellow between the veins.

Temperature

Keep between 18–29°C (65–85°F) for best growth. Avoid temperatures below 13°C (55°F), as chilling can cause leaf drop and root stress. Short spikes to 32–35°C (90–95°F) are tolerated if humidity and water are adequate. Protect from cold drafts and sudden temperature swings. If moving outdoors for summer, acclimate gradually over 7–10 days, and bring inside before nights drop below 15°C (59°F). Clusia is not frost tolerant.

Pro Tips

Train and prune for structure in late spring: tip-pinch young shoots to encourage branching or selectively thin interior stems to maintain airflow and a clean silhouette. The plant exudes white latex; wear gloves, protect surfaces, and sterilize tools before and after cuts to prevent disease spread. Avoid removing more than one-third of the foliage at a time. Outdoors, shape hedges after a flush of growth; indoors, light pruning every few months keeps it compact.
Propagate from semi-hardwood cuttings in warm weather. Take 10–15 cm cuttings with 2–3 nodes, remove lower leaves, and let the cut end dry briefly to reduce latex flow. Dip in rooting hormone, place in a chunky, sterile medium, and maintain 24–26°C bottom warmth with high humidity and bright, indirect light. Rooting typically takes 4–8 weeks. Pot up only after firm root development and acclimate gradually to lower humidity.
Use a chunky, well-draining mix to prevent root rot: for example, 40% pine bark, 30% coco coir or peat, 20% perlite, and 10% coarse sand. Clusia tolerates slightly alkaline conditions but shows best nutrient uptake at near-neutral to mildly acidic pH. Ensure a pot with large drainage holes; consider a breathable container (terracotta) if you tend to overwater. Top-dress with fresh mix annually and repot when roots circle densely.
Monitor for scale and mealybugs, especially in low airflow or dusty conditions. Check leaf undersides and stems; honeydew and sooty mold are common signs. Treat early with a cotton swab dipped in alcohol, then follow up with horticultural oil or insecticidal soap, repeating at 7–10 day intervals to catch crawler stages. Avoid chronic overwatering, which predisposes roots to fungal issues; good light and sanitation help prevent most problems.