Cape marigold (Oncosiphon grandiflorus)
Care, watering, light and tips for Cape marigold on Floravia.
Quick facts
- Family: Asteraceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Full sun
- Temperature: 0–35 °C
- Toxicity: Toxic to pets
About Cape marigold
Oncosiphon grandiflorus, commonly known as Matricaria, is an annual plant from the Asteraceae family, valued for its abundant bloom of small, delicate white flowers with yellow centers, very similar to daisies. It forms dense, compact clumps, making it ideal for borders, hanging baskets, or as ground cover in cottage or wild gardens. Its cheerful appearance and prolonged flowering beautify any space during spring and summer.
Native range
South Africa
Care tips
It requires full sun exposure for optimal flowering, although it tolerates partial shade in very hot climates. Watering should be moderate and regular, avoiding waterlogging; it is crucial to let the topsoil dry out between waterings. It prefers well-drained, light, and slightly sandy soils. A common mistake is the lack of deadheading, which reduces the production of new flowers and shortens the flowering period.
How to save a dying Cape marigold
- Warning signs
- Wilting or yellowing leaves, soft stems, scarce or no flowering.
- First aid
- Check drainage. If soil is waterlogged, gently remove excess. If dry, water lightly.
- What kills it
- Overwatering is its worst enemy, quickly rotting its roots. Also, complete lack of light.
- Can it be saved?
- Yes, if roots aren't completely rotted. Act fast to adjust watering and light.