Agapanthus Castle of Mey

Supplied From Divisions:

Agapanthus ‘Castle of Mey’ is a dependable, clump-forming African lily with rounded heads of lavender-blue, funnel-shaped flowers, each marked with a deeper blue midrib, held above tidy, strap-like green foliage. Flowering from mid-summer into early autumn, it’s perfect for adding bold, architectural shape to sunny borders and large patio pots. This is a deciduous, herbaceous variety and is considered hardy (RHS H5), making it a great choice for UK gardens in a warm, sheltered spot

Planting Instructions

When to Plant:

Plant bare roots in spring once the risk of hard frost has passed. In milder areas, planting in early autumn can also work, as long as the soil is still warm and well-drained.

Where to Plant:
Choose a warm, sunny, sheltered position with moist but well-drained soil. Agapanthus is ideal for sunny borders, gravel gardens, and large containers. Avoid winter waterlogging.

How to Plant:

• Depth: Plant so the crown sits about 5 cm below the soil surface.
• Spacing: Space 30–45 cm (12–18 inches) apart to allow room to clump up.
• Soil Prep: In heavy soil, add grit to improve drainage. Aim for a fertile, free-draining planting mix.

Watering:
Water well after planting. Keep soil evenly moist while establishing, then water only during prolonged dry spells. Agapanthus is drought resistant once established.

Aftercare Tips:

• Feed in spring and summer (especially in containers) to encourage flowering.
• Deadhead spent blooms to keep plants tidy.
• In colder areas, mulch well over winter; container plants can be moved under cover in very cold spells.
• Divide clumps every 3–4 years in spring to maintain vigour.

Top Tip:
Agapanthus ‘Castle of Mey’ is brilliant in large pots where it can be kept slightly restricted, often boosting flowering. Ensure containers have excellent drainage and never sit waterlogged in winter.

Plant Details

Flowering Period: Mid-summer to mid-autumn 
Height: approx. 24–28" (60–70cm), ultimately up to 1m
Spread: 4–20" (10–50cm) 
Position: Full sun, sheltered 
Hardiness: RHS H5 RHS