Highlights

Striking Double Blooms – Large, double-layered pink flowers up to 20cm wide create a bold garden focal point.
Fragrant Mid-Season Colour – Enjoy sweetly scented blossoms that peak in late spring to early summer.
Easy-Care Perennial – Paeonia lactiflora thrives with minimal maintenance, ideal for beginners and experts.
Hardy & Long-Lived – Returns year after year; suitable for UK gardens in full sun or partial shade.
Versatile Planting – Perfect for borders, mixed beds, or as cut flowers indoors.

We're offering you a 1 or 3 Peony 'Alexander Fleming' Plants for £6.99, saving you up to 30% off Thompson and Morgan's's price of £9.99 (correct as of 13.01.2026).

Transform Your Garden with Peony 'Alexander Fleming'

Paeonia lactiflora 'Alexander Fleming' is a classic perennial prized for its lush, double-petalled pink blooms and intoxicating fragrance. This mid-season variety is renowned for producing large flowers—up to 20cm across—that deliver vibrant colour and a sweet scent to your outdoor space.

Botanical family: Paeoniaceae
Bloom period: Late spring to early summer (May–June in the UK)
Mature height: Approx. 80–90cm
Spread: Up to 60cm
Flower type: Double, rose-pink petals with yellow stamens at the centre

Cultivation & Care Guide

Planting time: Best planted in autumn or early spring while dormant.
Sun requirements: Prefers full sun but tolerates partial shade.
Soil preference: Moist, well-drained soil; neutral to slightly alkaline pH (6.5–7.5).
Watering: Water regularly during dry spells, especially in the first year.
Hardiness: Fully hardy in the UK (RHS H7), tolerates winter frosts.
Fertilising: Apply a balanced fertiliser in early spring as new shoots emerge.
Pruning: Cut back stems after foliage dies back in autumn; mulch lightly for winter protection.

Design Tips & Companion Planting

Create bold displays by planting en masse or pair with irises, alliums, or hardy geraniums for a classic cottage garden look.
The long stems and showy blooms make excellent cut flowers—enjoy indoors as well as out!
Add peonies to mixed borders or use as a specimen plant for maximum impact.

FAQs

When is the best time to plant Peony 'Alexander Fleming'?
The best time is autumn or early spring when plants are dormant and soil is workable.
How long before peonies bloom after planting?
You may see flowers in the first season, but peonies often reach their best display from the second or third year onwards.
Do peonies need staking?
The large double blooms can be heavy; support may be needed, especially in exposed sites or during wet weather.