Ficus guianensis ‘Esptresor’ (Trésor)

Where the species behind Ficus guianensis ‘Esptresor’ (Trésor) grows naturally

Ficus guianensis occurs naturally from Panama and the Windward Islands through much of tropical South America. In the wild it grows as a woody tree in warm, wet tropical habitats.

Practical care for Ficus guianensis ‘Esptresor’ (Trésor)

• Light: Put Trésor where bright indirect light can reach through the open crown. Gentle morning or late-afternoon sun is suitable after gradual adjustment.
• Branching: Its woody branches normally hold the crown upright. If one shoot grows beyond the rest of the plant, cut it just above a leaf node with clean sharp tools. Side branches can then develop below the cut.
• Water: Use the pot weight together with the surface of the mix: water when the surface is dry and the container feels clearly lighter while some moisture remains deeper down. Soak the potting mix thoroughly and let all excess water drain.
• Potting mix: Use a loose houseplant mix with bark and pumice or perlite so water reaches the roots evenly and drains away freely.
• Temperature and humidity: Trésor grows steadily indoors at about 18–27 °C. Moderate household humidity supports fresh leaves as they open.
• Feeding: Feed with a balanced houseplant fertiliser while new leaves and shoots are developing. If growth stops, leave out fertiliser until new growth begins again.
• Repotting: Move up one pot size when roots circle tightly, grow through the drainage holes or you find yourself watering much more often than before.
• Propagation: Propagate Trésor with healthy stem cuttings. Air layering an established stem is another option.

When Ficus guianensis ‘Esptresor’ (Trésor) starts to struggle

• New growth has long bare stretches between leaves: The plant is not getting enough light. Move the plant toward a brighter window in stages and check whether the next shoot grows with leaves closer together.
• Several green leaves drop soon after the plant is moved: A sudden change in light, temperature or how wet the potting mix is can make leaves drop. Keep Trésor in one bright, stable position and return to a consistent watering rhythm.
• The leaf margins turn dry and brittle: The potting mix may have dried too far, or hot dry air may be passing over the leaves. Rewet the mix evenly and move the plant away from direct heating.
• Firm brown bumps appear with sticky residue: Scale insects are likely. Isolate the plant, remove visible scale from stems and leaves, then use a product labelled for scale on indoor ornamentals and repeat only at the interval stated on the label.

Ficus guianensis ‘Esptresor’ (Trésor) is toxic to people and pets

• Keep this plant away from children, cats and dogs, and avoid contact with its milky sap.
• The latex contains ficin and psoralens, which can irritate the mouth, digestive tract, skin and eyes.
• Exposure may cause mouth irritation, drooling, vomiting, stomach pain or a skin rash. Contact a veterinarian or medical professional if symptoms develop or persist.

The meaning and history of Ficus guianensis

Classical Latin ficus means fig. The epithet guianensis means from Guiana.

Carl Linnaeus established the genus Ficus in 1753 in Species Plantarum, page 1059; Joseph Pitton de Tournefort had proposed the name.

Nicaise Auguste Desvaux first described Ficus guianensis in 1825 in Prodromus Plantarum Indiae Occidentalis, page 62.