Early Sunrise Yellow Double
Coreosside
Coreopsis
Scientific classification
Class
Dicotyledons
Division
Angiospermae
Family
Asteraceae or Compositae
Order
Asterales
Genus
Coreopsis
Species
grandiflora
Key information
Description
Ornamental herbaceous perennial with a bushy habitus, prized for its showy, brightly-coloured flower heads at the top of the erect stems, which add an accent of colour and liveliness to outdoor spaces such as balconies and terraces as well as in flowerbeds, even in arrangements with other flowering species. Rustic and easy to grow, it tolerates the winter cold.
Variety description
Perennial plant with a very long and showy flowering period in late spring to late summer.
Origin and history
Curiosities and special features
The flowers are also suitable as cut flowers, to create colourful bouquets.
Also of high ornamental value is the species Coreopsis lanceolata belonging to the same botanical genus.
Origin and distribution
Native species of the range extending from eastern Canada to the United States. The botanical genus has undergone intensive genetic improvement, which has led to numerous interspecific hybrids distinguished by their height, the colour shade of their flowers and in some varieties also by their greater resistance to heat and cold.
Main features
Flower size
The flower is small, giving a pleasant final effect of lightness and elegance in a lush bloom.
Leaf
lanceolate, pinnate
Flowering period
Flowering lasts from mid-spring to late summer and lasts between 90 and 120 days.
Leaf colour
The leaf is solid-coloured, emphasising the bright hues of the flowers.
Plant height
The plant's height varies from 0.25 to 0.3 m, making it also suitable as a first or second-stage plant in compositions mixed with other ornamental grasses, creating highly decorative overall effects.
Lifespan
It is a perennial plant that can remain in the flowerbed for several years.
Where to plant
Very versatile, suitable for adding a bright and lively note to flowerbeds , planters, rock gardens Also perfect in flowerbeds with other species.
Stem
The stem is herbaceous; the variety has no thorns.
Flower
The flower is semi-double in shape, small in size, with a gamopetalous corolla and single-coloured petals. It flowers from mid-spring to late summer, with a flowering period of between 90 and 120 days. It is not particularly attractive to pollinating insects.
Growth
Variety with medium to vigorous growth.
Plant habit
The bushy habit makes it possible to create homogeneous and formally proportioned compositions.
Branching
Variety with medium branching, defined by a proportionate ratio of foliage to flowers.
Growing conditions
PH
It requires a slightly acidic soil or substrate pH between 6.0 and 6.5.
Soil preparation
Before transplanting, dig 20/30 cm deep by removing any weeds and bulky stones, continue by burying organic or chemical slow-release fertiliser and breaking up coarser clods with the help of a hoe. Finally, apply professional quality substrate on the surface to an average height of 5/10 cm and carefully level.
Read more on the Joyflo blogSun exposure
It offers the best Growth and flowering results when exposed in Half Shade, Full Sun.
Ideal climate and temperature
The ideal temperature is between 10 and 20 °C during vegetative growth. The vital temperature is between -5 and 30 °C
Use
Appreciated for its lush flowering with bright, vivid colours in
Outdoor ornamental
Hardiness
Highly hardy variety; adapts to different soil types, also ideal for beds in cold winter climates, even in temporarily frozen soil conditions.
Soil
It prefers a medium-textured, well-draining soil; a substrate for spring plants based on peat and perlite is recommended for use in planters or tubs.
Difficulty
Cultivation of this variety of Coreopsis grandiflora is extremely easy, making it even more valuable for use in your outdoor green spaces.
Growing tips
Some useful cultivation tips to achieve suitable vegetative growth followed by excellent flowering:
Expose the plant to maximum light Always maintain an abundant fertilisation to avoid yellowing of the vegetation.
Combinations with other plants
Suitable for creating harmonious compositions with other ornamental species such as Astilbe, Canna, Echinacea, Gaillardia, Gaura, Phlox paniculata. It is advisable to apply the correct planting density by arranging the plants in relation to their height and developed habit, as well as according to the desired colour effect in order to guarantee a suitable growth of each specimen and to obtain a proportionate whole.
Care and plant health
Planting
In flowerbeds, an average density of 10 plants per square metre is recommended in order to allow each individual specimen to grow properly and achieve a uniform and proportionate result.
Propagation
Propagation can take place via such an apical.
Watering
Use rainwater, alternatively canal water, hand watering or irrigation system. Take extra care when transplanting as the plant in the new planting site may be more susceptible to stress, so avoid dry spells and maintain constant humidity. Afterwards, keep the soil or substrate moist but free from stagnation which can cause root rot and dieback, while preventing water shortage stress to avoid leaf yellowing and bud wilt. Increase the frequency of irrigation during the warmer period and reduce watering in winter.
Read more on the Joyflo blogFertilising
During pre-transplant soil preparation, carry out basic fertilisation by burying organic or slow-release chemical fertiliser. After proper establishment in the new planting site, during the spring-summer period, in order to avoid yellowing of the vegetation, regularly apply a balanced liquid fertiliser for flowering plants to the soil or substrate, to be diluted in the irrigation water according to the instructions on the relevant information label.
Read more on the Joyflo blogEdibility and toxicity
Pet safety
Ingestion toxicity for pets not known, consider case-specific.
Edibility for humans
Non-edible.
Toxicity for humans
Ingestion toxicity not known, avoid ingestion.
Expert advice
Tip
It is advisable to avoid water stress and especially deficiencies in fertilisation.
Profile curated by Walter Zoccarato.




