Rudbeckia Amplexicaulis RHS Seeds

Rudbeckia amplexicaulis, commonly known as Clasping Coneflower, is a striking perennial that adds warmth and colour to the garden with its vibrant golden-yellow flowers. Unlike other Rudbeckia species, Rudbeckia amplexicaulis has unique, clasping leaves that surround the stem, giving the plant a distinct and attractive appearance. This variety produces large, daisy-like blooms with dark centres, creating a bold contrast that draws the eye. Perfect for sunny borders, wildflower meadows, and prairie-style plantings, it’s a wonderful choice for gardeners looking to attract pollinators while enhancing the garden’s visual appeal.

 

The genus Rudbeckia is named after the Swedish botanists Olof and Johannes Rudbeck, while amplexicaulis comes from the Latin word for "clasping," referring to the way the leaves surround the stem. Known for its hardiness and resilience, Rudbeckia amplexicaulis is well-suited to a variety of garden settings and thrives in full sun, making it an excellent choice for UK gardens.

 

Awarded the RHS Award of Garden Merit (AGM), Rudbeckia amplexicaulis has earned recognition for its excellent performance in UK gardens. This easy-to-grow perennial provides a long-lasting display of cheerful blooms from summer to autumn, making it an essential addition to pollinator-friendly gardens. Its robust nature and ability to thrive in a variety of soil types make it an ideal choice for gardeners of all skill levels.

 

Growing to a height of 60 - 80 cm, Rudbeckia amplexicaulis is a medium-sized plant that fits perfectly in mixed borders, wildflower meadows, or as part of a naturalistic planting scheme. It is also well-suited to growing in containers, offering a splash of colour in smaller spaces.

 

Seed Qty: Approx. 200

 

Sow: February - April (indoors) or April - May (outdoors)

Germination: 14 - 21 days

Soil: Well-drained, moderately fertile soil; neutral to slightly alkaline pH

Height: 60 - 80 cm

Flowering: July - September

Companion Plants: Echinacea, Aster, Salvia

Avoid Planting With: Moisture-loving plants

 

Rudbeckia amplexicaulis is a hardy and low-maintenance perennial that thrives in full sun and well-drained soil. It is drought-tolerant once established and requires minimal care beyond occasional deadheading to prolong the flowering period. Cutting back the plant in late autumn will help maintain a tidy appearance and promote fresh growth in spring.

 

Sowing Instructions

Indoors: Sow seeds in trays or pots filled with moist, well-drained compost from February to April. Lightly press the seeds into the surface without covering them, as light aids germination. Maintain a temperature of 18-20°C and keep the soil moist but not waterlogged. Transplant seedlings into individual pots when large enough to handle, and harden off before planting outdoors after the last frost.

 

Outdoors: Sow directly into prepared, well-drained soil from April to May, once the danger of frost has passed. Scatter seeds thinly on the soil surface and gently press them down. Keep moist until germination occurs. Thin seedlings to 30 cm apart for healthy growth.

 

With its cheerful yellow blooms and compact growth habit, Rudbeckia amplexicaulis is a reliable and hardy perennial that adds colour and structure to the garden. Ideal for pollinator-friendly plantings, it provides a long-lasting show throughout the summer months.

 

RHS Seed Scheme Range