AGAPANTHUS NAVY BLUE

Overview and Features

Agapanthus 'Navy Blue' is a stunning deciduous variety of African lily known for its rich, deep blue flowers and vigorous, upright growth habit. The large rounded flower heads bloom on strong stems above clumps of strappy green foliage, making it a striking choice for mid-to-late summer displays.

This variety is a favourite in both contemporary and cottage gardens, offering height, movement, and bold colour. It is ideal for sunny borders, containers, or coastal gardens, and is attractive to pollinators. 'Navy Blue' typically grows to around 80–100 cm tall and 40–60 cm wide, making it suitable for both standalone use and group planting.

• Produces large, deep navy-blue flowers in globular umbels

• Flowering period: July to September

• Clump-forming habit with mid-green strap-like foliage

• Height: 80–100 cm | Spread: 40–60 cm

• Excellent for cut flowers and pollinator gardens

Growing Conditions and Maintenance

Agapanthus 'Navy Blue' is a sun-loving, low-maintenance perennial that rewards with minimal fuss, especially in well-drained soils.

• Light Requirements:

  • Prefers full sun for maximum flowering

  • Can tolerate light shade, but with reduced bloom count

• Soil Preferences:

  • Needs moist but well-drained soil

  • Performs best in loamy, sandy, or chalky soils

  • Avoid heavy clay or waterlogged areas

• Watering:

  • Water regularly during dry spells in summer

  • Allow the soil to dry slightly between waterings

  • Container plants may need more frequent watering

• Feeding:

  • Feed with a high-potash fertiliser (e.g. tomato feed) every 2–3 weeks during growing season

  • Stop feeding after flowering ends to prepare plant for dormancy

• Pruning and Maintenance:

  • Deadhead spent blooms to encourage more flowers and maintain appearance

  • Cut back old foliage in late autumn or early spring

  • Hardy to around -10°C—mulch crowns in colder areas or lift and store

• Container Growing Tips:

  • Ideal for pots: use loam-based compost (e.g. John Innes No. 3)

  • Plant slightly root-bound to encourage flowering

  • Overwinter containers in a sheltered spot or unheated greenhouse

Seasonal Interest and Garden Uses

Agapanthus 'Navy Blue' provides bold, long-lasting colour and architectural elegance, especially valuable in summer borders and pots.

• Flowering Time:

  • Main bloom from July through early September

• Design Applications:

  • Perfect for mixed borders, gravel gardens, or tropical-style plantings

  • Excellent in containers for patios and balconies

  • Pairs beautifully with grasses, Achillea, Salvia, or Echinacea

• Wildlife and Pollinators:

  • Attracts bees, butterflies, and other beneficial insects

  • A great choice for pollinator-friendly planting schemes

• Pest and Disease Resistance:

  • Generally trouble-free

  • Watch for snails or slugs on young growth, especially in spring

• 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.