This back-of-the-border perennial is widely grown in Europe, and finally available here. 
Helianthus 'Lemon Queen' The Beth Chatto Gardens
Helianthus 'Lemon Queen' sunflower A free-flowering plant to brighten up the late summer garden. Covered in intense light yellow single 2-3" flowers from July to September. An irresistible butterfly plant. Bloom Color Yellow USDA Hardiness Zone 4-9 sunflower Interesting Notes (hee-lee-AN-thus) General Information: Most people are surprised to learn that Helianthus 'Lemon Queen' is a perennial sunflower.This plant is a showstopper when in flower. Imagine a 6 foot shrub like plant that is covered with 2" yellow flowers for 6-8 weeks in late summer and fall and you will understand why this plant is considered by many as one of the very best perennials. Helianthus 'Lemon queen' is known for attracting bees, beneficial insects, birds, butterflies/moths and other pollinators. It has nectar/pollen rich flowers and has seeds for birds. Bees Beneficial insects Birds Butterflies/ Moths Other pollinators Is Helianthus 'Lemon queen' poisonous? Helianthus 'Lemon queen' has no toxic effects reported. Helianthus 'Lemon Queen' sunflower 'Lemon Queen' 'Lemon Queen' is a strong-growing perennial to 2m tall, with coarse, dark green foliage and light yellow flowers 5cm wide, with pale yellow ray florets about a dark yellow central disk Synonyms Heliopsis helianthoides 'Limelight' Helianthus 'Limelight' Join the RHS today and save 25% Join now < >
Helianthus Lemon Queen Perennial Sunflower Garden Plants
Helianthus 'Lemon Queen' Helianthus Microcephalus LIGHT: Sun / Part Shade HEIGHT: 6-8' SPREAD: 4' ZONE: 4-9 BLOOM TIME: July to Sept GROWTH RATE: Fast description This pretty little sunflower is so self-sufficient - plant it once, enjoy it forever. Helianthus 'Lemon Queen' has been given the Award of Garden Merit by the RHS. Features Tall stems are covered in mid to dark green, deciduous, leaves and topped with multiple, free flowering flower heads. The flowers have small, dark… Helianthus 'Lemon Queen' (hee-lee-AN-thus) Life Cycle: perennial Height: 2M (6ft) Bloom Time: late August to late September Natural Range: Midwest USA Habitat: dry open fields Synonyms: none Cultivation of Helianthus'Lemon Queen': Light: full sun Soil: not fussy Water: average moisture to dry USDA Hardiness Zone: (3?) 4- 9 Characteristics and Description: Helianthus 'Lemon Queen' is a free-flowering perennial that adds a burst of brightness to the late-season garden. This tall and upright plant boasts luminous sprays of pale yellow flowers, measuring approximately 2 inches (5 cm) in diameter.
Helianthus 'Lemon Queen', Perennial Sunflower 'Lemon Queen' uploaded by richard.spicer.7906
Lemon Queen (Helianthus annuus) Heirloom Lemon Queen is particularly attractive to pollinating bees and is often planted by researchers tracking honeybee populations. These free flowering sunflowers have branching clusters of 4-6 inch flowers with pure lemon-yellow pointed petals and chocolate centers. Plants grow 5-9 feet tall and mature early. '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. Season of interest Height and spread Metric | Imperial Where to grow Soil type Chalky Clay Loamy Soil drainage Moist but well-drained Soil pH Choose well-draining soil if possible. If you'd like to plant it in a pot, choose a big one (at least 10 gallons if possible). Make a little 1/2-inch deep planting hole. Then, place one seed inside the hole. Cover lightly with soil. The Lemon Queen Sunflower (Helianthus annuus 'Lemon Queen') is a charming and vibrant variety of sunflower known for its stunning lemon-yellow petals. It is a popular choice for those seeking a sunflower with a bright and cheerful color that adds a touch of sunshine to any garden or landscape.
