Hostas are particularly easy to grow and grow quickly, in fact they reach full maturity in a few years; they have no particular disease problems and are not even afraid of the coldest temperatures.
Although they are not evergreen plants, they have a remarkable versatility and can be used as ground cover plants, as border plants or as isolated specimens, they are then particularly suitable for growing in pots, so much so that in Japan they are often used as houseplants. The flowers are elegant, brought to cob on floral scapes of different shapes and heights, often deliciously scented; their colors include all shades from pure white to purple and dark blue. The stems that carry the flowers rise above the foliage.
The hosta they are typical perennial plants, whose green part disappears during the cold season; they survive thanks to the rhizomatous root system, which contains the reserve substances and the buds for plant development in the favorable season.
Exposure and Terrain
Species belonging to the genus hosta they are shade-loving plants, although there are some varieties that tolerate the full sun quite well and grow florid even in conditions different from the common ones; generally blue or dark leaf varieties prefer more shaded areas, while light green or yellow ones like sunnier environments. They do not fear the cold and even sudden drops in temperature survive perfectly.
The ideal soil for hostas is rich in organic substance, with sub-acid to slightly alkaline pH, fairly well drained, fresh and fairly moist.
For proper cultivation and care of hostas, irrigation is important in the hot summer months. Hostas derive considerable benefits from a mulch based on organic substance that can be regularly renewed over the years.
Large Hostas should be planted 60-80 cm away while potted ones can be transplanted throughout the growing season, although the most suitable periods are spring and autumn.
As far as the distance between plant and plant is concerned, it is advisable to refer to the description of the single varieties, also considering the use of the plants: border, ground cover, isolated specimen, group of specimens, background etc.
Hostas are also very suitable for growing in pots, in which case they must be fertilized and irrigated in greater quantities. Before planting the hosta, prepare the soil well by tilling it and adding organic fertilizer if necessary.
Dig a hole of the size of the pot, remove the container taking care not to break the clod, bury the clod keeping the plant at the same depth it had in the pot. Irrigate immediately after transplanting.
Hosta: cultivation and care: Diseases and care
Cultivation and care of hostas can be difficult in some situations. In fact, there are no particularly destructive diseases or organisms against hostas, but the only serious danger is represented by snails or snails, which are greedy of their leaves.
To eliminate or limit the snails, metaldeyde-based poison baits are available on the market to be distributed around the plant in order to prevent the problem.
Hostas are a kind of plant used particularly by florists and nurserymen to make beautiful bouquets of flowers thanks to their large and very ornamental leaves. Moreover, they are chosen among many varieties also for their longevity! They can last up to forty years.