AGAPANTHUS Double Diamond

Agapanthus ‘Double Diamond’ Care Guide

Agapanthus ‘Double Diamond’ is a compact, dwarf variety of the African Lily, known for its pure white, double flowers that bloom in abundance. It is a clump-forming perennial that thrives in borders, containers, and rock gardens, bringing elegance and structure to outdoor spaces. With the right care, this low-maintenance, long-flowering plant will provide seasonal interest and attract pollinators like bees and butterflies.

Ideal Growing Conditions

• Botanical Name: Agapanthus ‘Double Diamond’
• Common Name: Dwarf African Lily
• Plant Type: Herbaceous perennial
• Mature Size: Reaches a compact height of 20-30cm with a similar spread
• Foliage: Strappy, dark green leaves that form a dense clump
• Flowers: Pure white, double blooms held on short, sturdy stems
• Flowering Season: Blooms from mid to late summer, lasting into early autumn
• Growth Rate: Moderate to fast-growing in ideal conditions
• Hardiness: Hardy in USDA Zones 7-10; may require winter protection in colder climates

Light and Soil Requirements

• Light: Prefers full sun for the best flowering performance. Can tolerate partial shade, but fewer flowers may develop.
• Soil: Requires well-draining soil, such as sandy, loamy, or chalky soils.
• pH Level: Grows best in neutral to slightly acidic or alkaline soil (pH 6.0-7.5).

Watering and Moisture

• Newly Planted Agapanthus: Water regularly for the first 4-6 weeks until established.
• Established Plants: Drought-tolerant but benefits from deep watering during dry periods.
• Overwatering Risks: Avoid waterlogged soil, as excessive moisture can lead to root rot.
• Mulching: Apply a layer of compost or bark mulch in spring to retain moisture and improve soil fertility.

Planting and Maintenance

How to Plant Agapanthus ‘Double Diamond’

• Planting Time: Best planted in spring or early autumn when temperatures are mild.
• Spacing: Place plants 30-40cm apart to allow for proper air circulation and growth.
• Planting Depth: Ensure roots are just below the surface; planting too deep can reduce flowering.
• Container Growing: Ideal for pots—use a well-draining compost mix with added grit or perlite for aeration.

Pruning and Deadheading

• Deadheading: Remove spent flower stems to encourage prolonged blooming and maintain a tidy appearance.
• Leaf Maintenance: Trim any yellowing or damaged leaves to promote healthy growth.
• Dividing Clumps: Every 3-4 years, divide overcrowded plants in early spring or autumn to revitalize flowering.

Feeding and Fertilization

• Spring Fertilization: Apply a high-potassium feed (such as tomato fertilizer) to encourage flower production.
• Summer Boost: Feed with a balanced liquid fertilizer every 4-6 weeks while in bloom.
• Avoid Excess Nitrogen: Too much nitrogen can result in lush foliage but fewer flowers.

Common Pests, Diseases, and Seasonal Care

Potential Pests and Diseases

• Slugs and Snails: Can chew on young shoots and leaves, especially in damp conditions.
  • Solution: Use grit, crushed eggshells, or organic slug pellets to deter them.
• Aphids: These small insects can weaken plants by sucking sap from stems.
  • Solution: Spray with soapy water or introduce beneficial insects like ladybirds.
• Root Rot: Caused by excess moisture and poor drainage.
  • Solution: Plant in well-draining soil and avoid overwatering.

Seasonal Care Tips

• Spring: Feed plants, clear any dead foliage, and refresh mulch.
• Summer: Keep soil moist, deadhead spent blooms, and provide light shade in extreme heat.
• Autumn: Cut back fading flower stalks, reduce watering, and divide if necessary.
• Winter: Protect plants in colder regions by applying a thick mulch layer or bringing container-grown Agapanthus indoors.

Landscape Uses and Companion Planting

Agapanthus ‘Double Diamond’ is an excellent choice for borders, patio pots, and mixed plantings. It pairs beautifully with other perennials and grasses to create a stunning garden display.

Ideal Companion Plants

• Lavender (Lavandula) – Complements Agapanthus with its fragrant purple blooms and drought-tolerant nature.
• Salvia – Provides rich blue or purple flower spikes that contrast well with Agapanthus’s white blooms.
• Echinacea (Coneflower) – Adds height and a bold flower structure to mixed borders.
• Ornamental Grasses (Stipa, Festuca) – Enhances movement and texture in the garden.

Summary

Agapanthus ‘Double Diamond’ is a compact, floriferous perennial that produces stunning white, double flowers throughout summer. Its drought resistance, easy maintenance, and suitability for containers or borders make it a fantastic choice for any garden. By providing full sun, well-draining soil, and occasional feeding, this hardy and resilient plant will reward you with years of elegant blooms and a pollinator-friendly garden

• Size
  2 Litre

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.