Dense blazing star, planting guide and care work

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Dense blazing star (Liatris spicata) is a perennial herbaceous plant with bulbs, which is part of the Asteraceae family, originating from North America. The plant stands out for its unusual, small, star-like flowers, arranged around a long and straight spiral. The flowers are purple, but there are cultivars with white or pink flowers. It blooms from summer to autumn. The leaves are narrow, simple, arranged on the entire stem. The leaves at the base are longer and give the plant a bushy appearance, and those arranged towards the top are smaller. The plant can be grown directly in the soil, in the garden or in flowerpots and planters.

Dense blazing star – varieties and cultivars
  • Liatris spicata ‘Alba’: a cultivar with white flowers, which can reach up to 50 cm in height;
  • Liatris spicata ‘Callilepsis’: it has purple flowers on tall stems. They are ideal for floral arrangements or cut flowers;
  • Liatris spicata ‘Kobold’: it is a smaller, compact cultivar with dark purple flowers;
  • Liatris spicata ‘Floristan White’: it has white flowers, which start bloom in July;
  • Liatris aspera: it can reach a height of up to 100 cm, depending on the area. The flowers are purple, less decorative than the species L. spicata, but it is an ideal plant for dry and poor soils;
  • Liatris pycnostachya: it blooms later, in the months of August-September. The species can have white, purple or pink flowers, arranged on stems that are up to 150 cm tall.

Environmental conditions

Light. It prefers sunny spaces, light having an important role in the process of growth and flowering.

Temperature. The dense blazing star is a species tolerant to high summer temperatures. In winter, it can tolerate low temperatures, provided that the soil is not wet.

Soil. It grows and develops on almost any type of soil, as long as it provides a good water drainage. The lack of drainage can lead to root rot. The soil can have a neutral pH and a medium level of fertility.

Dense blazing star – Care

Watering. It is watered regularly after planting and in the first year of the vegetative growth period. Mature plants can tolerate drought conditions and dry soil, but not for a long period of time.

It is important that the watering is done at the base of the plant, so that the foliage remains dry.

Fertilizing. If the soil is poor, fertilizers specially formulated for flowering plants can be applied every spring.

Recommended products

Read carefully and follow the instructions on the label of each product

Propagation. It can be propagated by dividing the bulbs or by seeds, harvested at the end of autumn.

Recommended products

Read carefully and follow the instructions on the label of each product

Diseases and pests

The dense blazing star is rarely attacked by pests, but it can be affected by a number of diseases such as: leaf spots, rust, powdery mildew, rot, Verticillium, etc.

To prevent the occurrence of diseases, it is recommended to place the plants in a bright place, to ensure a good air circulation among the plants and to keep the foliage dry.

Recommended products

Read carefully and follow the instructions on the label of each product
Additionally:
  • The flowers of this species open from top to bottom. This makes the plant a good choice for cut flowers, as the withered flowers at the top can be easily removed, and fresh flowers will continue to appear;
  • The plants that become soft and break at the base may be affected by soil pathogens. They appear in conditions of high humidity at the soil level.
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