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Annuals – Catharanthus

  • Catharanthus 

Botanical name: catharanthus roseus 

Beginner friendly?: yes

Average size at maturity: about 40 inches in height and in width 

Bloom time:  year-round

Hardy zone: zones 9-12

Flower color: white/pink/red/purple

Foliage color: green 

Growth rate: reaches full maturity in first growing season 

Pruning instructions: deadhead as needed 

Propagation methods: cut a stem just below a node and place in water until roots start to emerge

Landscape use: tropical gardens 

Light needs: 6 hours of sun per day 

Special features: trailing stems 

Watering instructions:  allow soil to partially dry between watering sessions 

Fertilizing instructions : use a slow release granular fertilizer in the early spring

Best time to plant: spring 

Best type of soil:  loam, sand 

Companion plants: angelonia, lantana, zinnia 

Toxicity level: potentially mildly toxic if ingested 

Invasive species: no