Osteospermum Care Guide: Everything You Need to Know About African Daisies
Osteospermum, or African Daisy, is beloved for its long blooming season, bold colour, and easy-care nature. Whether you're growing them in borders, containers, or hanging baskets, this guide answers the most common questions UK gardeners ask so you can enjoy vibrant flowers for months.
Do Osteospermums Come Back Every Year?
Whether your Osteos return depends on your winter climate:
- Mild, frost-free UK regions: They behave as short-lived perennials, returning reliably each year.
- Colder UK regions: Treat them as annuals, as they struggle to survive hard frosts.
Dartana Tip: Overwinter indoors in a cool, bright room or greenhouse to enjoy them again next year — especially varieties you particularly love.
Do You Cut Back Osteospermum in Winter?
Yes, cutting back helps maintain shape and plant health.
How to Cut Back
- After flowering finishes, trim stems by one-third.
- Remove dead or damaged growth to prevent mould and disease.
If overwintering indoors:
- Keep the plant in bright, cool conditions
- Water sparingly to prevent rot
How Do You Keep Osteospermum Blooming?
These sun worshippers bloom longest when you give them the right conditions:
Flower-Boosting Tips
- Deadhead regularly to encourage new buds
- Feed every 2–3 weeks with a balanced liquid fertiliser
- Provide full sun — essential for strong flowering
- Ensure well-drained soil
- Avoid heavy watering; Osteos prefer slightly drier conditions
Consistent deadheading and sunlight are the biggest keys to continuous colour.
Do Osteospermum Plants Spread?
Yes — they naturally develop a mounding, spreading habit:
- Spread: 30–60 cm wide depending on variety
- Great for ground cover, borders, or spilling over containers
- Not invasive — they spread neatly and predictably
This makes them perfect for filling gaps and adding seasonal volume.
Quick Care Summary
| Care Aspect | Requirement |
|---|---|
| Light | Full sun |
| Soil | Free-draining, sandy or compost‑based |
| Watering | Moderate — allow to slightly dry between waterings |
| Maintenance | Deadhead & feed regularly |
| Overwintering | Indoors or greenhouse in cold regions |
Why Choose Osteospermum from Dartana Plants?
Osteos are one of Dartana’s favourite long-season performers. They offer:
- Months of flowers
- Low maintenance care
- Great performance in pots, baskets, borders, and coastal gardens
- Excellent value from plug plants
- A wide range of dazzling colours, including unique two-tone blooms
They’re reliable, versatile, and ideal for gardeners of all experience levels.
FAQs
Are Osteos OK in pots?
Yes — they thrive in containers as long as drainage is excellent.
How often should I feed them?
Every 2–3 weeks during active flowering.
Can I take cuttings?
Yes — softwood cuttings taken in late summer root easily.
Why has mine stopped flowering?
Likely too little sun or overwatering; adjust both for better blooms.
