Helianthus 'Lemon Queen' (Sunflower 'Lemon Queen')

Botanical name

Helianthus 'Lemon Queen'

Other names

Sunflower 'Lemon Queen'

Genus

Helianthus Helianthus

Variety or Cultivar

'Lemon Queen' _ 'Lemon Queen' is a vigorous, erect, rhizomatous, deciduous perennial with ovate, veined, dark green leaves and, from late summer into autumn, pale yellow flowers with darker yellow central disc-florets.

Native to

Garden origin

Foliage

Deciduous

Habit

Erect

Awards

RHS AGM (Award of Garden Merit)

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Colour

Flower

Yellow in Summer; Yellow in Autumn

Foliage

Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn

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How to care

Watch out for

Specific pests

Slugs , Snails

Specific diseases

Powdery mildew , Sclerotinia diseases

General care

Pruning

Cut back after flowering. May need staking.

Propagation methods

Division

Defra's Risk register #1

Plant name

Helianthus 'Lemon Queen' (Sunflower 'Lemon Queen')

Common pest name

American serpentine leaf miner; chrysanthemum leaf miner

Scientific pest name

Liriomyza trifolii

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Regulated pest already subject to review at the EU level (2013). Regularly intercepted in the trade.

Defra's Risk register #2

Plant name

Helianthus 'Lemon Queen' (Sunflower 'Lemon Queen')

Common pest name

African cottom leafworm; Cotton leafworm; Egyptian cotton leafworm; Egyptian cotton worm; Mediterranean climbing cutworm; Meditteranea Brocade; Tobacco cutworm

Scientific pest name

Spodoptera littoralis

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Regulated pest; frequently intercepted with occasional outbreaks which have been successfully eradicated in the UK.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7^th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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Monthly care advice

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Where to grow

Helianthus 'Lemon Queen' (Sunflower 'Lemon Queen') will reach a height of 1.8m and a spread of 1.2m after 2-5 years.

Suggested uses

Architectural, Beds and borders, City, Coastal, Cottage/Informal, Flower Arranging, Wildflower

Cultivation

Grow in moderately fertile, humus-rich, moist but well-drained, neutral to alkaline soil in sun. Requires a long hot summer to flower well. Protect young plants from slugs and snails and avoid acidic soils.

Soil type

Chalky, Clay, Loamy

Soil drainage

Moist but well-drained

Soil pH

Alkaline, Neutral

Light

Full Sun

Aspect

South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4