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Rudbeckia hirta Gloriosa Daisy

Rudbeckia x hirta Gloriosa Daisy
Black-eyed Susan, Gloriosa Daisy

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This rudbeckia is a short-lived perennial plant cultivated as an annual or biennial. Its graceful flower, with delicate and slightly trailing petals, is a beautiful golden yellow with a dark brown centre, creating a striking and contrasting mix. It continuously blooms from July to October if faded flowers are removed. This tall variety is floriferous, making it suitable for flower beds and potted plants in sunny or partially shaded areas. It is also an exceptional cut flower.
Flower size
8 cm
Height at maturity
80 cm
Exposure
Sun, Partial shade
Annual / Perennial
Annual
Germination time (days)
21 days
Sowing method
Sowing under cover, Sowing under cover with heat
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Sowing period March to April
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Flowering time July to October
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Description

The Rudbeckia 'Gloriosa Daisy', derived from Rudbeckia x hirta, offers a beautiful golden yellow flower with a brown centre and an almost black heart, with elongated and trailing petals. Graceful, it blooms on a fairly tall plant throughout the summer until the first frost. This Rudbeckia makes a big impact in borders, flower beds, and flower pots. Indifferent to heat and poor soils, these short-lived perennial plants also flower well in sunny or semi-shaded locations.

Cultivars of Rudbeckia x hirta are derived, among others, from Rudbeckia hirta, a robust wild plant of the Asteraceae family, native to the prairies of North America. It is a short-lived perennial plant, most often cultivated annually or biennially. In fact, it will not last more than 2 to 3 years in the garden, but it self-seeds quite easily. Gloriosa Daisy, shorter than its ancestor, reaches a height of 80 cm (32in) and spreads about 50 cm (20in). The inflorescences of this Rudbeckia are large 'daisies', actually solitary head inflorescences, with a diameter of 7 to 10 cm (3 to 4in), centred on a prominent dark brown cone. Many flowers succeed each other from July to October on the plants, forming an impressive multicoloured mass. At the end of summer, the petals fade and fall, while the heart of the flowers dries up and becomes withered. The flowers can then be picked and incorporated into a dried bouquet. The foliage consists of a tuft of lanceolate, dentate, dark green basal leaves, 5 to 10 cm (2 to 4in) long, from which sturdy and ramified floral stems rise. The stems bear cauline leaves, which are narrower and rather ovate.

The Rudbeckia 'Gloriosa Daisy' thrives in perennial beds, borders, and large flower pots. It can be combined with other varieties or associated with inulas, asters, achilleas, daisies, and echinops. You can also lighten the scene by mixing in some ornamental grasses such as Stipa tenuifolia and Muhlenbergia capillaris. Splendid in flower beds, its rich hues are also beautiful in fresh or dried flower bouquets. Hardy, Rudbeckia hirta likes sunny or semi-shaded locations, but is not picky about the soil; it is a particularly heat-resistant plant and tolerant of dry and poor soils.

An ecological asset: Throughout the summer, the nectar-rich flowers of rudbeckias attract pollinating insects and butterflies. A good way to improve your garden's ecosystem and promote fruit and vegetable production in your garden. In autumn, you can admire the incessant ballet of birds that come to feed on the mature seeds they find in the hearts of the dried flowers.

Flowering

Flower colour two-tone
Flowering time July to October
Inflorescence Flower head
Flower size 8 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms
Flowering description The flowers are large solitary daisies (heads) with narrow spreading petals. The diameter of the flowers is approximately 7 to 10 cm (3 to 4in).

Foliage

Foliage persistence Annual
Foliage colour dark green
Foliage description This plant has dark green leaves at the bottom that are shaped like spears and have jagged edges. They're usually about 2 to 4 inches long. On top of these leaves, sturdy stems grow out and branch off into many smaller stems. These stems have narrower, egg-shaped leaves.

Plant habit

Height at maturity 80 cm
Spread at maturity 50 cm
Growth rate fast

Botanical data

Genus

Rudbeckia

Species

x hirta

Cultivar

Gloriosa Daisy

Family

Asteraceae

Other common names

Black-eyed Susan, Gloriosa Daisy

Origin

Cultivar or hybrid

Other Rudbeckia seeds

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Planting and care

Before sowing the rudbeckia, place your seeds in the vegetable compartment of your refrigerator for 4 weeks. This will break the seed's dormancy and improve your sowing's success.

Sow the seeds from February to April in a seed tray. Use a good quality compost that you will sieve on the surface to bind the seed to its substrate. Before sowing, gently press down the compost with a board. Sow your seeds by broadcasting. Cover the seeds by sprinkling compost on top or using vermiculite, gently press down and water generously with a fine rain. Place your seed tray in a well-lit area, without direct sunlight, at a temperature of 20°C (68°F) to 25°C (77°F). Lower the temperature at night to 18°C (64.4°F) to create a beneficial alternation for germination.

The seeds will germinate in 10 to 21 days. When the seedlings are manageable, transplant them into 7cm (3in) pots. Keep the compost moist but not excessively during growth. Then, 15 days before their final planting, start gradually acclimating them to a temperature of 15°C (59°F).

By the end of May or early June, the temperature in the garden will be warm enough to plant your young plants. Choose a sunny location. Add a good shovel of compost to each planting hole. Space your plants 30 cm (12in) apart.

Regularly remove faded flowers to maintain their beauty and promote repeat flowering.

Sowing period

Sowing period March to April
Sowing method Sowing under cover, Sowing under cover with heat
Germination time (days) 21 days

Intended location

Suitable for Meadow, Rockery, Woodland edge
Type of use Border, Edge of border, Container, Slope
Ease of cultivation Amateur
Exposure Sun, Partial shade
Soil pH Any
Soil moisture all types, Ordinary soil.

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Flower seeds

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    Available in 2 sizes

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    €5.90 Tin

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