AGAPANTHUS BRILLIANT BLUE

Overview and Features

Agapanthus ‘Brilliant Blue’ is a compact, deciduous African lily cultivar prized for its intensely rich blue flowers and neat growth habit. This variety produces rounded umbels of trumpet-shaped flowers on sturdy stems above strap-like, green foliage, offering a striking focal point in summer gardens and container displays.

Blooming from mid to late summer, ‘Brilliant Blue’ delivers vibrant colour and structure with excellent weather resilience. It’s ideal for small borders, pots, front-of-border planting, or grouped in sunny beds for a dazzling seasonal impact.

• Deep blue flowers with a slightly darker central vein

• Flowering season: July to September

• Height: 30–50 cm | Spread: 30–45 cm

• Forms a compact, clump-forming plant

• Great for pollinators, especially bees

• Perfect for containers, small spaces, and modern gardens

Growing Conditions and Maintenance

‘Brilliant Blue’ is easy to grow in sunny, well-drained locations. As a deciduous type, it dies back in winter and re-emerges vigorously in spring.

• Light Requirements:

  • Needs full sun (minimum 6 hours daily)

  • Flowering is reduced in shade

• Soil Preferences:

  • Prefers free-draining, fertile soil

  • Will tolerate slightly sandy or gritty soils

  • Avoid waterlogged areas, especially in winter

• Watering:

  • Water regularly during dry periods in summer

  • Allow soil to dry slightly between waterings

  • Container-grown plants require more frequent watering

• Feeding:

  • Feed fortnightly with a high-potash liquid fertiliser during growing and flowering period

  • Avoid nitrogen-rich fertilisers which promote leaves over flowers

• Pruning and Maintenance:

  • Deadhead spent flowers to maintain a tidy appearance and encourage further blooms

  • Cut back old foliage in autumn or early spring

  • Apply a winter mulch in colder regions to protect the crown

• Pot Cultivation Tips:

  • Excellent in terracotta or ceramic containers

  • Use John Innes No. 3 with added grit for drainage

  • Keep slightly pot-bound to improve flowering performance

  • Overwinter pots in a sheltered or frost-free area

Seasonal Use and Garden Design

Agapanthus ‘Brilliant Blue’ is perfect for creating cool-toned, structured summer displays. Its uniform, compact habit makes it especially valuable in geometric layouts, formal beds, or small gardens.

• Best Uses:

  • Front-of-border plant, containers, patio edges, or gravel gardens

  • Lovely in Mediterranean schemes or alongside silver foliage and grasses

• Design Tips:

  • Pairs well with Nepeta, Salvia, Erigeron, Lavender, and Achillea

  • Contrast with bright yellows, whites, or silvery plants for dynamic combinations

• Wildlife Appeal:

  • Flowers are rich in nectar, making them a magnet for bees and butterflies

  • A good addition to pollinator-friendly planting schemes

• Size
  3 lt

We currently only deliver within the island of Ireland, other countries can be quoted for by contacting [email protected] or via telephone on 06964084
 

Standard Delivery is FREE on orders over €250*

All standard deliveries will be completed within 5-7 working days via Fastway Couriers, any delay to this delivery time, the customer will be notified by One of our staff.

The in-Store delivery charge will vary compared with online, in-store delivery charge is done on a case by case basis. 

* Only mainland Ireland addresses qualify for free delivery.
 

Live Plants Delivery

Our live plants are packed with care and diligence by our staff, our horticulturists review each plant before despatch to ensure quality is maintained.
Live Plant delivery charges are not calculated on weight but on the space required per package to ensure safe delivery, so delivery charges may vary as some plants require more space than others when packed.
All live plants are despatched within 3-5 working days where possible, our couriers aim to deliver within 48 hours of despatch from our Garden Centre to allow the plant to arrive in healthy condition.
 

Click & Collect

Can’t wait for delivery? Why not try our FREE Click & Collect service? Simply make your purchase online and collect it from our store located in Croagh Co. Limerick. Our staff will contact you by phone when your order is ready for collection (Please allow 24 hours minimum). When collecting your item, call the store on 069-64084. We will then load into your car as required. This service is available in-store 9am – 6pm Monday – Saturday (No collections on Sundays)

Click here for more information about our shipping conditions.

You can pay your online order either by credit card or via Paypal.
If you have any further questions about the online order payment please contact us via ­069 640 84 or mail.