Carrotwood Tree (Cupaniopsis anacardioides)

Plant Snapshot

Common Name: Carrotwood Tree
Latin Name: Cupaniopsis anacardioides
Hardiness Zones: About USDA 9b to 11 in cultivation. In colder zones expect dieback or loss in severe freezes and slower growth. In warmer zones it can be long lived and may naturalize.
Typical Height: Typically about 20–40 ft (6–12 m) tall in landscape settings.
Typical Spread: Often 20–35 ft (6–10 m) spread when mature.
Bloom Period: Flowering commonly occurs from spring into summer in suitable climates.
Soil Preferences: Prefers well drained loam to sandy soils and tolerates coastal sands. Accepts a range from mildly acidic to neutral. Poorly drained soils can lead to root decline.
Light Preferences: Full sun to part shade. Denser canopy and faster growth in full sun but tolerates some afternoon shade.
Toxicity: Fruits are eaten by birds. There is no widely cited severe human or pet toxicity record but detailed poison control references are limited. Exercise caution with ingestion and avoid handling sap if sensitive.
Propagation: Propagate by fresh seed or by semi hardwood cuttings. Seed is commonly bird dispersed and germinates readily under warm conditions.

Key Facts

Native to eastern Australia and widely planted as a street and shade tree.
Evergreen with a dense, rounded canopy.
Produces small yellowish flowers followed by orange to red capsule fruit eaten by birds.
Tolerant of coastal conditions and some salt spray.
Adaptable to a range of well drained soils.
Used in subtropical and warm temperate landscapes.
Propagates readily by seed and by cuttings.
Can naturalize outside its native range and may behave invasively in some subtropical regions.

Carrotwood Tree is an evergreen subtropical tree used for shade and street planting because of its dense rounded canopy and bird‑attractive fruit. It performs well in coastal and warm temperate landscapes but can naturalize outside its native range so placement and cleanup affect long‑term spread.

Identification

Evergreen with a dense rounded canopy, the Carrotwood produces clusters of small yellowish flowers followed by orange to red capsule fruit that birds eat and disperse. In cultivation it typically reaches about 20 to 40 feet tall with a broad spread of roughly 20 to 35 feet, forming a medium street or screening tree.

Best uses and where to grow

Use Carrotwood as a street tree, shade specimen or screen in subtropical and warm temperate gardens where its dense canopy is desired. It tolerates coastal conditions and some salt spray making it suitable for seaside plantings, provided the site is not prone to prolonged waterlogging which reduces vigor.

Planting and spacing

Allow room for a mature canopy by spacing trees about 20 to 35 feet (6 to 10 meters) apart to avoid crowding and root competition. Plant in locations within USDA roughly 9b to 11 where frost risk is low; avoid frost‑prone micro‑sites to reduce dieback. Sit the trunk so the root collar is at soil level and mulch the planting area to conserve moisture.

Soil, light and watering

Carrotwood prefers well drained loam to sandy soils and accepts mildly acidic to neutral ranges while tolerating coastal sands. It grows in full sun to part shade with denser canopy in sunnier sites. Avoid poorly drained soils because root decline can occur. Keep newly planted trees regularly watered until established and reduce frequency on mature specimens unless soils stay waterlogged.

After‑flowering care and pruning

Prune to maintain clearances for streets and structures and to open the canopy where needed; formative pruning early limits long‑term maintenance. Remove crossing branches and thin crowded limbs after flowering to preserve shape. Collect and dispose of fallen fruit if unwanted seedlings are appearing beneath the tree.

Propagation

Propagate readily from fresh seed and from semi‑hardwood cuttings. Seed is bird dispersed in the landscape and germinates readily in warm conditions; dormancy and pretreatment recommendations vary so consult local propagation guidance. Cuttings taken under nursery conditions root with standard hormone and care protocols.

Spread and naturalizing control

Carrotwood can naturalize and behave invasively in some subtropical regions where bird‑dispersed seed establishes in natural areas. To limit spread remove fruit before birds disperse it, rake out seedlings and avoid planting near wildlands. Check regional listings and regulations before using it in restoration or near sensitive habitats.

Frequently asked questions

How fast does Carrotwood Tree grow?: Growth rate varies with climate and site. In warm, well drained locations it establishes readily and can attain several meters over a number of years; growth will slow in cooler or waterlogged sites.
Is Carrotwood suitable for coastal planting?: Yes. It tolerates coastal conditions and some salt spray and performs well in seaside landscapes when planted in well drained soils.
How big does a mature Carrotwood get?: Typical landscape size is about 20 to 40 feet tall with a spread of roughly 20 to 35 feet, though exact size depends on site conditions and pruning history.
Are the fruits safe around pets and children?: Fruits are eaten by birds and dispersed in the landscape. Authoritative information on human or pet toxicity is limited; consult local poison control or a veterinary source before assuming edible safety.
How can I propagate Carrotwood?: Propagate by fresh seed or semi‑hardwood cuttings. Seed germinates readily in warm conditions while cuttings root under standard nursery practice; local protocols vary for pretreatment and timing.