Calocephalus brownii is a medium-sized evergreen perennial shrub, native to Australia; the thin stems, very branched, are greyish-green, almost silvery, as are the linear leaves, which make the shrub decorative throughout the year.
It is planted in autumn, remembering that the plant can reach 120-150 cm in height and about 60 cm in diameter. In spring it produces small spherical inflorescences, constituted by greenish yellow flowers, very particular, at the apex of the stems; in summer the flowers are replaced by fruits, small gray-whitish berries.
THE Calocephalus they are very suitable in perennial flowerbeds, and also among aromatic plants; in fact these shrubs do not have a very long life, but they are very decorative; sometimes they are cultivated as annual plants, in low borders, or in annual pots, and they are uprooted when winter arrives.
The Calocephalus brownii should be planted in a sunny place, or even semi-shaded; in general they can withstand temperatures close to -5 ° C even if they prefer milder temperatures, around 10-15 ° C.
It is advisable to place this variety of plants in a place sheltered from the wind and, during the winter season, cover the surrounding soil with dry leaves or mulching material in order to protect the roots from the harsh temperatures.
The plants of this variety are well suited to growing in pots, given the small size they reach; in this way it is possible to repair them at best during the coldest period.
The plants of Calocephalus brownii are quite rustic and resistant and as far as watering is concerned they have no particular needs, often being satisfied with the rains alone.
Obviously, from March to October, it is advisable to water in the event of prolonged periods of drought, in any case waiting for the soil to be perfectly dry between one watering and another in order to avoid stagnation of water that can compromise the health of the plant or provoke root rots. During the vegetative period, provide fertilizer for flowering plants, every 20-25 days, dissolved in the water used for watering.
THE Calocephalus they are grown in soft, rich and very well drained soil to avoid the annoying and dangerous stagnation of water. It is also possible to arrange the cultivation in pots, necessary above all for the youngest and most delicate specimens.
The multiplication of calocephalus can occur by seed and by cutting. Seed multiplication can be applied in spring or late summer; in summer it is also possible to practice semi-woody cuttings, taking 8-10 cm branches to be placed in the ground in a luminous area but not to the direct rays of the sun, after having favored the growth of the roots by immersing the cut in the powdered hormone for roots , which can be found by a good nurseryman.
Calocephalus brownii: Pests and diseases
Calocephalus brownii plants can be affected by powdery mildew, root rot and aphids. In the event of symptoms that indicate the presence of a parasite or a disease, it is essential to act quickly to solve the problem definitively, using the specific products available on the market.