Dieffenbachia ‘Crocodile’

Care for cane-forming aroids

Watering

Water when the upper layer of the substrate is dry and the mix beneath remains slightly moist. Prolonged dryness causes drooping and brittle edges; constant wetness weakens roots and the lower cane.

Substrate and roots

The root zone should be moisture-retentive and springy, with fine bark and perlite or pumice maintaining air spaces through repeated watering. Compacted fine material can stay stagnant around the cane, and large chunks may leave dry gaps around young roots.

Humidity and airflow

Average household humidity is workable. Moderate humidity improves expansion of the puckered blades and reduces crisp tips, especially in heated rooms.

Fertilising

Use a dilute complete balanced fertiliser when Dieffenbachia ‘Crocodile’ is developing new leaves and roots. Feeding may continue beyond summer if the plant remains warm and active, but should pause during a genuine slowdown.

Repotting

Repot if roots encircle the pot, grow from multiple holes, lift the canes or make moisture distribution unreliable. Ease apart only severe outer coils and replant the cane bases at their former level during a warm active phase.

Health checks for Dieffenbachia ‘Crocodile’

• Mature leaves feel or look more textured underneath: A raised, ridged midrib on the underside is a normal ‘Crocodile’ feature, not swelling or pest damage. Investigate only if the tissue also becomes soft, wet-looking or develops irregular dead patches.
• Small wet-looking spots enlarge or merge: A spreading leaf spot is more likely when foliage stays wet with little air movement. Keep the plant away from neighbours, remove badly affected leaves with disinfected tools, keep water off the foliage and improve gentle airflow.
• A leaf stalk or blade suddenly collapses after chilling: Cold glass, a draught or a sharp temperature drop can injure Dieffenbachia tissue. Move the plant to a stable warm position and remove only material that has become fully soft or dead.
• Sticky leaves or fixed brown bumps appear near the veins: Check stems and leaf undersides for scale insects. Wipe off visible pests, isolate the plant and repeat a suitable treatment using our scale guide

Dieffenbachia ‘Crocodile’ is toxic to people and pets

• Keep this plant away from children, cats and dogs.
• Its leaves and stems contain insoluble calcium oxalate crystals, which can irritate the mouth, throat, skin and eyes.
• Chewing may cause burning pain, drooling, swelling, vomiting or difficulty swallowing. Contact a veterinarian or medical professional after exposure, especially if swelling or breathing problems occur.

Dieffenbachia: name and meaning

Dieffenbachia honours Joseph Dieffenbach.

Heinrich Wilhelm Schott established the genus Dieffenbachia in 1829 in Wiener Zeitschrift für Kunst, Literatur, Theater und Mode, volume 3, page 820.