Coreopsis Verticillata

Class

Dicotyledons

Division

Angiospermae

Family

Asteraceae or Compositae

Order

Asterales

Genus

Coreopsis

Species

verticillata

Description

Rhizomatous perennial plant with a compact, bushy habit, prized for its summer flowering, which manifests itself in a profusion of daisy-shaped flowers in shining colours borne by branching stems and well liked by pollinating insects. Rustic, it tolerates temporary summer drought. During the winter period it goes into vegetative rest, withstanding low temperatures and vegetating again the following spring. Tolerates temporary summer drought.

curiosity and special features

Belonging to the botanical Family of Asteraceae or Compositae, characterised by the typical flower-head Inflorescence. Other ornamental Species such as C. grandiflora and C. lanceolata belong to the same Genus Coreopsis.

Origin and Diffusion

Native species of the range extending from eastern Canada to the eastern United States. Numerous new hybrids are distinguished by their height and the colour shade of their flowers.

Flower size

Flower individually is Medium in size.

Leaf

Leafs, opposite and deciduous, have Filiform, Palmate, Pennate lamina with entire margin and divided into three segments giving the plant an airy and light appearance.

Flowering period

from early summer to early autumn for a duration of 90 to 120 days.

Inflorescence

Inflorescence head, typical of the botanical family Compositae.

Leaf color

Solid-coloured, perfectly matching the colour shade of the flowers.

Plant height

The height of the plant varies from 0.25 to 0.8 m, depending on the variety.

Lifespan

Rhizomatous herbaceous Perennial, enters into vegetative rest during the winter period.

Suggested planting locations

The sheen given by its lush blooms as well as its developed habit make it ideal for adding colour and elegance to flowerbeds, borders, rock gardens and outdoor tubs.

Stem/stem

Herbaceous type plant with a root system formed by a set of thin rhizomes.

Flower

The flower is daisy-shaped, medium-sized, with a symmetrical corolla. The petals are solid-coloured and shaded. It is arranged in head-like inflorescences of medium size. It flowers from early summer to early autumn, with a flowering period of between 90 and 120 days. It is attractive to bees and butterflies.

Growth

Growth is compact, suitable for orderly and proportionate overall results.

Plant habit

It develops a bushy but neat and dense habitus.

branching

It is characterised by the presence of thin Rhizomes.

pH

The ideal pH of the soil or cultivation medium is between 5.8 and 6.2.

soil preparation

Before transplanting in spring or autumn, carry out a 20/30 cm deep digging, removing any weeds and cumbersome stones, continue by uniformly burying organic or chemical slow-release fertiliser and breaking up the coarsest clods with the help of a hoe. Finally, distribute professional-quality substrate on the surface to an average height of 5/10 cm and carefully level off.

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sun exposure

For full and luxuriant flowering choose an exposure in bright shade, full sun.

Ideal climate and temperature

The ideal temperature is between 15 and 25 °C during the vegetative and flowering period. The vital temperature is between -15 and °C.

Use

Appreciated as a small to medium-sized herbaceous plant in:

Outdoor ornamental

Hardiness

Ahighly rustic plant, it is resistant to winter cold and tolerates temporary summer drought.

Soil/medium

The ideal soil for Coreopsis verticillata is light, fresh and well draining. For cultivation in tubs or pots, use a good quality substrate, specifically for spring plants, containing peat and perlite.

Maintenance

After proper establishment in the new planting site, the cultivation of Coreopsis verticillata is easy, and the low level of maintenance effort gives it additional value in use.

cultivation tips

Some specific cultivation tips to achieve suitable vegetative growth followed by excellent flowering:

With little light the plants do not flower Balanced fertilisation Plant that adapts very well to cold winter climates and also thrives in frozen soil conditions.

Composition

Suitable both in monochromatic groups as well as in composition with other ornamental species such as Delphinium grandiflorum, Gaillardia aristata, Gaura lindheimeri, Phlox subulata, Scabiosa japonica. 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 ensure suitable growth of each specimen and to obtain a proportionate whole.

planting

In a flowerbed, an average density of 7 plants per square metre is recommended in order to allow for proper growth of each individual specimen and achieve a uniform and proportionate result. Position the seedling with the collar above the soil surface, watering after planting but without causing a water saturation condition with stagnation.

pruning

At the end of flowering, cut off the withered Inflorescences. Before vegetative regrowth, cut off the dry parts with a precise cut.

Reproduction/Propagation

Propagation is by cutting and Division of the rhizome.

Irrigation

Use rainwater, alternatively canal water, by hand watering or irrigation system. When transplanting, assist the seedling at the new site, preventing dryness as well as waterlogging. Afterwards, keep the substrate or soil slightly moist but free from stagnation that can cause collar rot. Increase the frequency of watering during the warmer period and reduce watering in winter.

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Fertilization

During pre-planting soil preparation, carry out a background fertilisation by burying organic or slow-release chemical fertiliser. After proper establishment in the new planting site, on average three to four weeks after planting, during the spring-summer period regularly apply a balanced liquid fertiliser for flowering plants to the substrate or soil, to be diluted in the irrigation water according to the instructions on the relevant information label.

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Edibility for humans

Non-edible

advise 1

Prevent water stagnation; for use in pots, place a saucer with expanded clay and water during the hottest period. Remove withered inflorescences. In the event of prolonged winter frost, it is advisable to spread a layer of mulch over the soil.