Platycodon grandiflorus is a perennial herbaceous, lively, coming from East Asia, in particular from China, Siberia, Korea and Japan. Until 1830 it was considered a bellflower, but after numerous movements, it was assigned a genus of its own, belonging however always to the great family of the Campanulaceae. Only the species is known at horticultural level platycodon grandiflorus comprising a large number of varieties and cultivars, obtained, thanks to research, from the mid-19th century to the present day.
The name platycodon derives from the Greek and means "broad bell".
The thin, erect stems, 30-50 cm high, carry numerous alternate, oval or lanceolate leaves, green-blue in color; from the beginning of summer to the beginning of autumn they produce numerous roundish buds, the flowers are star-shaped, with 4 or 5 lobes, blue, lilac, white or pink. These small plants are widely used in borders, like other bellflower species, due to the rich summer flowering and longevity of the plants; they are also used in herbal medicine and ancient Chinese medicine.
The plants of campanula grandiflora they settle in a sunny place, or in the partial shade; excessively shaded positions can cause poor flowering; in areas with very hot summers the plants certainly develop best in a place protected from the sun during the hottest hours of the day. THE platycodon grandiflorus they tolerate very cold temperatures without problems, since the plant is in vegetative rest during the winter months; sometimes the aerial part dries up completely. The new leaves will develop in late spring.
In spring the stems of the campanula grandiflora they sprout very slowly forming a light green cone from which the slightly glaucous leaves with toothed edges emerge. As the plant grows, their color evolves towards a medium glossy green. From June, highly branched and sparse flowering stems rise. At their ends they carry flowers formed by five pointed petals (in the dark violet species, but they are also available in white and pink), grouped in clusters. There are simple and double flower varieties. They resemble the bluebells very much, if it weren't for the exceptional size of the flower: for this reason they are also called "large flower bellflowers".
The buds are very interesting: they are very swollen and resemble balloons: in the United Kingdom the plant was nicknamed Baloon Flower; children love it very much because they enjoy making them burst.
Over time it forms a large network of rather deep fleshy roots. However, this lively growth is rather slow: it usually takes at least two years to get a nice pillow. However, it is always very long lasting and therefore it is only necessary to have a little patience: it is very rustic, resisting well both to the cold and to the great heat and is very rarely attacked by parasites. It is a plant on which it is worth aiming, both for cultivation in the garden and in containers on balconies, terraces or window sills.
THE PLATYCODON IN BRIEF
|vegetation||Perennial herbaceous, lively|
|flowers||Diam 5 cm, purple, blue, light blue, white, pink|
|height||Up to 60 cm|
|width||30 cm at maturity|
|rusticitа||Very rustic (up to -20 ° C)|
|exposure||Full sun / half shade|
|usages||Bordura, rock garden, vase, indoor|
|ground||Deep, rich, well-drained, neutral or sub-alkaline|
|Soil moisture||Slightly damp|
|Planting (North)||From April to June|
|Flowering||From June to September|
|First name||Flowering||Height||Other characteristics|
|'Fuji' series||Very large flowers, white, pink and mauve||From 40 to 60 cm in height|
|Hakone||Huge white or purple flowers||50 cm|
|'Mariesii'||Deep purple blue flowers||Up to 40 cm||Very floriferous|
|Mother of Pearl||Pale pink flowers||60 cm|
|'Apoyama "Series||Large purple-blue flowers||Up to 20 cm|| Long flowering|
Suitable for vase
|'Astra' series||Blue, pink, white and lavender with simple or double flowers||From 10 to 30 cm||From vase or rock garden|
|Sentimental blue||Light blue, flowers with only 4 petals||30 cm|
To have abundant and colorful blooms we can distribute a liquid fertilizer for flowering plants every 15 days or, for each plant, a teaspoon of slow release granular fertilizer (generally last about three months). Administration should be performed from the beginning of spring to September. We always choose products that are predominantly potassium compared to nitrogen, so as not to excessively stimulate vegetative growth at the expense of flowering.
As we have said, these are plants with rather slow growth. Divisions should be reduced as much as possible. It is advisable to intervene on average every 4-5 years, paying the utmost attention not to damage the roots, which wither and rot easily.
We regulate regularly, always avoiding that the soil is completely dry, but never exaggerate. We fertilize every 15 days with a product for flowering plants. We can proceed with divisions or repotting every two years.
Campanula grandiflora - Platycodon grandiflorus: Curiosity
The flowers and roots are edible. The latter are very commonly used in oriental medicine.
The bell is a graceful herbaceous plant belonging to the genus Leucojum. This genus does not present many species, in
visit: flower bells
Campanula is a herbaceous plant widespread throughout the world. It belongs to the genus Campanula and to the family of the
visit: white bellflowers
Perennial herbaceous plant with purple flowers native to Europe, North America and Asia the bellflower develops dense
visit: white bellflower