PlantSowGrow
How to plant and care for Agapanthus (Headbourne Hybrids)
Agapanthus
Big globes of blue trumpets on tall stems in July and August above strappy leaves. Flowers best with its roots crowded in a pot.
When to plant and care for it
Timed for a typical UK garden (last frost mid-April). The app uses your own town's frost dates.
Growing Agapanthus (Headbourne Hybrids): what it needs
- Light
- Full sun · 6+ hours a day
- Watering
- Water well until established, then in dry spells
- Soil
- Well-drained soil or loam-based compost
- Spacing
- 45 cm
- Height
- 90 cm
- In pots
- Grows well in containers
- Feeding
- A little general feed in spring
- Hardiness
- USDA zones 7–10
Step by step
- On planting day
Plant
Plant at the same depth as it was in its pot, 45 cm apart, and firm in.
- 0–1 days after “Plant”
Water In Well
Give a full can of water, then keep moist for the first few weeks while roots establish.
- 7–14 days after “Water In Well”
Mulch Around the Base
Spread 5 cm of compost or bark around the plant, keeping it off the stems.
Every year
- AprilSpring Feed
Feed with a high-potash (tomato) feed every two weeks from April until the buds show colour.
- JulyIn Flower
Blue globes in full flower.
- SeptemberTrim After Flowering
Cut the flower stems to the base, unless you want the seed heads for arrangements.
- NovemberWinter Protection
Mulch the crown deeply; move pots against a warm wall or into a cold greenhouse.
More flowers to grow
Photo: Luis Miguel Bugallo Sánchez / Wikimedia Commons (CC BY-SA 4.0)
