Exploring Lisbon's Tropical Botanical Garden: A Hidden Green Oasis

Tropical palms, ancient cycads, and towering ficus trees thrive just minutes from Lisbon's historic Belém district. The Jardim Botânico Tropical (JBT), also known as Jardim do Ultramar, offers a lush 15-acre escape where Portuguese colonial history meets botanical diversity.

History Meets Horticulture

Founded in 1906 by King Carlos I, the garden was designed to showcase flora from Portugal's overseas territories—Angola, Mozambique, Brazil, Goa, Timor, and Macau. Today, it houses the Instituto de Investigação Científica Tropical (IICT), an herbarium digitizing African flora records, a zoological collection, and a xylotheque (wood library). Though maintenance has been uneven, the garden's mature specimens and scientific mission make it a rewarding visit for plant lovers and history buffs alike.

A Walk Through the Collections

Enter and turn left onto the main path. Cycads—living fossils from the dinosaur era—line the way, their stiff, fern-like fronds a striking contrast to the soft lawns. Near a pond, a massive Beaucarnea recurvata (ponytail palm) seems to float, its swollen caudex mirrored in the water.

Further on, a Dracaena draco (dragon tree) from the Canary Islands spreads its umbrella canopy. Though a monocot, it achieves tree-like proportions. Sprinklers mist the air, a welcome relief in Lisbon's summer heat.

The surface roots of a Ficus macrophylla (Moreton Bay fig) sprawl like a herd of grey elephants gripping the earth—an unforgettable sight.

Palms, Greenhouses & Surprises

A grand palm alley leads to a greenhouse—unfortunately closed during our visit—but the outdoor palm collection compensates with flowering specimens and architectural forms. One mystery tree with a massive, multi-trunked base and unusual fruit clusters defied immediate identification (any guesses welcome!).

Nearby, a thicket of Aleurites moluccana (candlenut tree, Euphorbiaceae) recalls Réunion Island, where its leaves turn silver in hurricane season. The tree's hard-shelled nuts can be polished like gemstones.

Practical Information

• Location: Belém, Lisbon, on the Tagus River shore near the Jerónimos Monastery and Belém Tower.
• Hours: Check current schedule; typically open daily.
• Admission: €2 adults; €1 seniors/youth under 18; free for children under 7.
• Size: ~15 acres (60,000 m²), easily walked in 1–2 hours.
• Highlights: Cycad collection, mature Ficus and Dracaena, palm diversity, bonsai display (rear yard), historic herbarium & research institute.

After your visit, stroll to the riverfront for a pastel de Belém (custard tart) and a glass of Sagres cerveja—the perfect end to a tropical interlude in Portugal's capital.

Photos by the author unless noted. Garden history sourced from IICT and on-site signage.