Highlights

Vibrant Summer Blooms – Deep pink flowers appear from early summer to the first frost, brightening borders and containers.
Hardy & Low Maintenance – Thrives in UK gardens with minimal care, perfect for beginners and experienced gardeners alike.
Robust Growth – Part of the renowned Summer Series, known for vigorous growth and reliable flowering.
Long-Lasting Colour – Enjoy months of blooms that add depth and contrast to mixed perennial beds.
Supplied as Plug Plants – Ready for potting on now; ideal for quick establishment in borders or pots.
Perfect Companion Plant – Complements other perennials such as Salvia, Echinacea, and Coreopsis.

We're offering you a 1 or 3 Alstroemeria Summer Rose for £7.99, saving you up to 47% off Thompson and Morgan's's price of £14.99 (correct as of 23.03.2026).

Alstroemeria 'Summer Rose' – Deep Pink Perennial Beauty

Alstroemeria 'Summer Rose', also known as Peruvian Lily, is a standout perennial from the acclaimed Summer Series. With its rich deep pink blooms, this variety brings a bold splash of colour to any border or container. Each stem carries clusters of trumpet-shaped flowers, creating a stunning visual display from early summer right through to the first frost.

Why Choose 'Summer Rose'?

Reliable Performer: Renowned for robust growth and prolific flowering, even in unpredictable British summers.
Low Maintenance: Hardy down to typical UK winter temperatures, this perennial is easy to grow and needs little attention once established.
Extended Flowering: Long-lasting blooms provide months of garden interest—ideal for cut flower arrangements too.
Versatile Placement: Perfect for sunny borders, raised beds, or patio containers. Its upright habit makes it an excellent companion for other summer perennials.

Growing Guide & Care

Planting Time: Best planted in spring after the last frost. Supplied as plug plants ready for potting on now.
Location: Prefers full sun or partial shade. Choose a sheltered spot to protect delicate blooms from strong winds.
Soil Preference: Thrives in well-drained, fertile soil with neutral to slightly acidic pH. Amend heavy soils with compost before planting.
Irrigation: Water regularly during dry spells but avoid waterlogging. Mulch annually to retain moisture and suppress weeds.
Feeding: Apply a balanced fertiliser monthly during the growing season for best results.
Pruning: Remove faded flower stems to encourage repeat blooming. Cut back foliage in late autumn after flowering ends.

'Summer Rose' Variety Information

Genus: Alstroemeria (Peruvian Lily)
Cultivar: 'Summer Rose'
Mature Height: Typically reaches 60–90cm (24–36 inches)
Bloom Period: Early summer to first frost
Hardiness: Suitable for UK gardens (RHS H4), hardy in most regions

Design Tips & Companion Planting

Create Contrast: Pair with silver-leaved perennials like Artemisia or soft blues from Nepeta for striking combinations.
Cottage Garden Favourite: Works beautifully alongside classic border plants such as Salvia, Echinacea, and Coreopsis.
Pots & Containers: Add instant colour to patios—combine with trailing lobelia or petunias for a vibrant summer display.

FAQs

When is the best time to plant Alstroemeria 'Summer Rose'?
The ideal time is spring after the last frost; these plug plants are ready for potting on now.
How tall does this variety grow?
'Summer Rose' typically reaches 60–90cm (24–36 inches) at maturity.
What care does it require?
This hardy perennial thrives in full sun or partial shade with well-drained soil. Water regularly in dry spells and feed monthly during the growing season.