Hemerocallis Pandora’s Box

Description

Hemerocallis ‘Pandora’s Box’ – daylily

Botanical name: Hemerocallis ‘Pandora’s Box’
Common names: Daylily
Family: Asphodelaceae
Plant type: Herbaceous perennial
Habit: Clump-forming, with arching foliage
Pot size: 2–3 litre pot
Eventual size: Approx. 45–55cm tall × 50cm spread
Foliage: Arching, strap-shaped fresh green leaves forming a bold clump; deciduous
Flowers: A long succession of creamy-yellow flowers with a striking deep purple-red eye zone and throat, through summer, often reblooming (June–August)
Scent: Not notably scented
Aspect / light: Full sun to partial shade (best flowering in sun)
Soil: Fertile, moist but well-drained; tolerant; any pH
Hardiness: RHS H6 (hardy, to about −20°C); USDA zones 3–9
Exposure: Sheltered or open; very tolerant
Native range: Garden form; the genus is native to Asia
Toxicity / pet & child safety: Non-toxic to people and dogs, but HIGHLY TOXIC to cats

Hemerocallis ‘Pandora’s Box’ is a pretty, compact daylily with cream flowers marked by a bold purple-red eye, through summer, often reblooming. Neat and easy for sunny and mixed borders.

GardenAdvice notes

One of the most rewarding and trouble-free of all perennials, the daylily (Hemerocallis) produces a long succession of large, showy, lily-like trumpet flowers through summer, held on strong stems above bold, arching clumps of strap-shaped foliage. Each individual flower lasts just a day — hence the name — but they open in such generous succession that the display continues for many weeks. This one has the bonus of a reblooming habit, flowering again later in the season. Tough, adaptable and easy, thriving in almost any soil, it is a superb, dependable border plant.

Growing & planting

Plant in spring or autumn in fertile, moist but well-drained soil in full sun to partial shade — it flowers best in sun but is remarkably tolerant of most soils and conditions. Improve poor soil with compost. Space about 45–60cm apart. Water while establishing and in dry spells for the best flowering.

Care & maintenance

Low-maintenance. Water in dry spells while in growth and bud for the best flowering. Remove the faded flowers and, once a whole stem has finished, cut it out at the base to keep the plant tidy. Tidy away dead foliage in autumn or spring. Feed and mulch in spring. Lift and divide congested clumps every few years in spring or autumn to keep them vigorous and free-flowering.

Propagation

• Division: Lift and divide congested clumps in spring or autumn — easy, and the main way to propagate.

Pests & diseases

Generally trouble-free, tough and healthy. Slugs and snails may graze the emerging spring shoots, and daylily gall midge or hemerocallis rust occasionally occur. Dividing every few years keeps clumps vigorous. Otherwise one of the most reliable perennials.

Uses in the garden

Superb in mixed, cottage and sunny borders, in bold groups, on banks and in large containers, where its arching foliage and long succession of showy trumpet flowers bring weeks of colour and easy, dependable structure.

Wildlife value

The flowers are attractive to bees, butterflies and other pollinating insects through summer.

Toxicity & safety

Daylilies are generally considered non-toxic to people and dogs. However, they are highly toxic to cats — eating any part can cause severe, potentially fatal kidney failure — so they should not be grown where cats may nibble them, and cat owners should choose with care.

GardenAdvice tip

‘Pandora’s Box’ is a lovely compact daylily — creamy flowers with a striking deep purple-red eye and throat, a bold contrast on a neat plant that often reblooms for a second show. Its smaller size suits the front of a border or a pot. Tough and easy like all daylilies; divide every few years. Remember daylilies are highly toxic to cats.

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