Cultivar · genus Codiaeum

Petra

Codiaeum variegatum · ‘Petra’

Guide

Written and kept by people who grow it. Every section carries its source.

Thrips and Petra

Petra crotons are particularly susceptible to leaf-burrowing thrips. To control them, hose the plant down thoroughly in the morning with cold water while the thrips are still resting.

Source: Epic Gardening

Care recipe

Each fact carries its confidence tier — and says whether it belongs to this cultivar or is inherited from the species.

Care notes reviewed by Horta

Light: ai:claude-code
Humidity: ai:claude-code
Soil: ai:claude-code

LightOwn

Bright, indirect

Waterfrom Codiaeum variegatum

≈ every 10 days

HumidityOwn

High

Temperaturefrom Codiaeum variegatum

16–27 °C

Soil mixOwn

peat-free, loam-based potting compost

PropagationOwn

air layering in spring, or softwood cuttings with bottom heat in summer

Fertilizingfrom Codiaeum variegatum

Balanced liquid feed monthly in the growing season

Growth ratefrom Codiaeum variegatum

Moderate

FloweringOwn

sprays of tiny white or yellow star-shaped flowers may appear in summer

ToxicityLocked · species

Toxic to cats & dogs & humans

Euphorbiaceae produce an irritant milky latex that can cause skin and mucous-membrane irritation and digestive upset if ingested. This is where toxicity lives: every cultivar inherits it and none can override it.

Reference images

Every image credited. Licenses link to their deeds.

Sources: ai:claude-code · ai:claude-opus-4-8 (family inference)

Kept true by its growers

Every fact here carries its source. Grow ‘Petra’ yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — and a clear photo of your plant are exactly what keep this page honest. Contributions are reviewed before anything changes.