Campanula addenda® mix

Description and Characteristics

Campanula Addenda® Mix is a vibrant and compact selection of bellflower cultivars specially bred for long flowering periods, excellent garden performance, and compact growth. The Addenda® series includes various Campanula species and hybrids—primarily Campanula portenschlagiana and Campanula poscharskyana—chosen for their colourful blooms, hardiness, and versatility.

This mix typically features shades of lavender blue, deep violet, soft lilac, and pure white, offering a continuous display of delicate, starry or bell-shaped flowers from late spring into autumn. With a dense, trailing or spreading habit, Campanula Addenda® Mix is well-suited to containers, window boxes, hanging baskets, and groundcover applications.

Plants form low, mounding cushions of bright green foliage, covered in blooms throughout the warmer months. Flowers appear on short stems and cover the plant so abundantly that foliage can be barely visible at peak bloom.

• Mixed colours: lavender, purple, blue, and white

• Flowering period: May to October (often reblooms with light trimming)

• Height: 10–25 cm; Spread: 30–45 cm

• Dense, cushion-forming, often trailing or spreading habit

• Ideal for containers, rock gardens, edging, and groundcover

• Attracts bees, hoverflies, and other pollinators

Growing Conditions and Maintenance

Campanula Addenda® Mix thrives in well-drained soil and moderate sun, with very little maintenance. It offers outstanding performance both in the garden and in pots, with a tidy, vigorous growth habit and generous reblooming if lightly trimmed.

• Light Requirements:

  • Grows best in full sun to partial shade

  • Prefers bright morning sun and afternoon shade in hot climates

• Soil Preferences:

  • Prefers moist, well-drained soil enriched with organic matter

  • Tolerates a variety of soils, including sandy or rocky types

  • pH: neutral to slightly alkaline

• Watering Needs:

  • Keep soil consistently moist but not soggy, especially in pots

  • Water when the top inch of compost feels dry

  • Avoid waterlogging, particularly in winter

• Feeding:

  • Feed container plants every 2–3 weeks with a balanced liquid fertiliser

  • In the ground, a spring application of slow-release fertiliser is sufficient

• Pruning and Maintenance:

  • Deadhead or lightly shear after first flush of flowers to promote reblooming

  • Remove spent blooms regularly for a tidy appearance

  • Trim back in autumn or early spring to rejuvenate growth

• Winter Care:

  • Hardy in Zones 4–9 (RHS H5–H7) depending on the specific cultivar

  • In colder regions, mulch lightly over winter

  • Container plants may need protection or be moved to sheltered spots

Garden Uses, Companion Plants, and Pollinator Benefits

Campanula Addenda® Mix offers year-round value in design, providing compact structure, a long flowering window, and important support for pollinators. Its trailing habit makes it perfect for elevated displays, while its tidy cushion form works beautifully as a groundcover or edging plant.

• Design Applications:

  • Ideal for patio containers, balcony planters, hanging baskets, and window boxes

  • Perfect for front-of-border use, between paving stones, or rock gardens

  • Great for filling gaps in perennial beds or edging walkways

• Companion Plants:

  • Pairs well with Sedum, Iberis, Erigeron, Aubrieta, Dianthus, and Scabiosa

  • Mixes nicely with grasses, violas, and miniature roses

  • Complements spring bulbs and early summer perennials

• Pollinator Value:

  • Flowers are nectar-rich and attractive to bees and hoverflies

  • Provides an early and extended nectar source

  • Ideal for wildlife-friendly and eco-conscious gardens

• Container Growing:

  • Use free-draining, peat-free compost with added grit for best results

  • Trim regularly to maintain a compact, flowering shape

  • Combine with upright perennials or trailing foliage plants for mixed arrangements

• Pest and Disease Resistance:

  • Generally resistant to pests and diseases

  • May occasionally experience aphids, slugs, or mildew in very damp conditions

  • Ensure good airflow and avoid crowding

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.