Hemerocallis 'Seal the Deal' (Daylily) — Clump forming

Overview

Hemerocallis 'Seal the Deal' is a clump forming herbaceous perennial in the genus Hemerocallis, part of the Asphodelaceae family, with deciduous foliage. Hemerocallis 'Seal the Deal' grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H6. Suggested uses include borders and containers.

About

Hemerocallis 'Seal the Deal' is a clump-forming herbaceous perennial in the Asphodelaceae, grown for its summer display. It produces deciduous, basal foliage and flowers in the main summer months. Plant where it receives full sun on a south-facing, exposed position in a moist but well-drained neutral loam. It is rated H6, meaning it is very hardy in UK conditions.

About the genus

A daylily, day lily or ditch-lily is a flowering plant in the genus Hemerocallis, a member of the family Asphodelaceae, subfamily Hemerocallidoideae, native to Asia. Despite the common name, it is not taxonomically classified in the lily genus. Gardening enthusiasts and horticulturists have long bred Hemerocallis species for their attractive flowers; a select few species of the genus have edible petals, while some are extremely toxic.

Wikipedia contributors, "Daylily", CC BY-SA 4.0 — Daylily

In the garden

Hemerocallis 'Seal the Deal' belongs to the genus Hemerocallis within the Asphodelaceae and traces to the group commonly known as daylilies, plants long cultivated for their summer blossoms. In cultivation it forms permanent clumps of deciduous, basal leaves and carries its flowers through the summer months, with the primary display from June to August. Choose a site in full sun with a south-facing aspect and good air movement; these plants tolerate exposed situations. They perform best in a neutral loam that remains moist but drains freely — waterlogging will shorten vigour. H6 hardiness means the plant is very hardy across the UK and does not generally require winter protection in typical garden conditions. Hemerocallis 'Seal the Deal' suits mixed borders and larger containers where its clump-forming habit can be shown off without crowding. Give plants room to expand and place them where summer flowering can be enjoyed from paths or patios. Because the foliage dies back seasonally, note that its summer flowers arise above a mound of deciduous leaves and will be most visible from June to August, when the plant is at its most conspicuous in the border.

Growing conditions

Best soil and position for Hemerocallis

Sunlight: Full sun
Soil type: Loam
Soil pH: Neutral
Soil moisture: Moist but well-drained
Aspect: South-facing
Exposure: Exposed
UK hardiness: H6

Plant details

Hemerocallis 'Seal the Deal' size, habit and characteristics

Plant type: Herbaceous Perennial
Habit: Clump forming
Foliage: Deciduous
Suggested uses: Borders, containers

Care notes

Pruning and caring for Hemerocallis 'Seal the Deal'

Propagation: Division, seed
Pest resistance: Aphids, slugs, snails, glasshouse red spider mite, thrips
Disease resistance: Fungal leaf spot, rust diseases, bacterial leaf and stem rot