This genus includes some species of lively bulbous plants native to Europe, Asia and Africa. The bulbs produce numerous long and narrow leaves, arranged in a narrow erect rosette; from May to July some 10-15 cm tall stems grow from the rosette of leaves bearing clusters of 5-6 star-shaped flowers, of a purple, light blue, blue or white color depending on the species.
Some species produce small flowers gathered in long panicles. These bulbous plants are widely used in flowerbeds and borders, and are also very suitable for rock gardens.
There are several species of Scilla that are cultivated for ornamental purposes, such as Scilla bifolia, Scilla litardierei, Scilla mischtschenkoana, Scilla peruviana and finally Scilla Siberica.
The Scilla siberica is particularly suitable for places with cold winters, to which it resists without problems. This variety usually reaches 20-30 centimeters in height and produces inflorescences with bright blue flowers that are most often asymmetrical.
The scylla prefer sunny positions, even if they develop without problems in areas with few hours of sun a day; they do not fear the cold, since in winter they are in vegetative rest, therefore the bulbs can be safely left underground, where they naturalize without problems, producing numerous new bulbs over time.
The flowering period of these plants is spring and in particular the beginning of spring. In mountain areas or in places with low temperatures, flowering can be postponed and take place in late spring.
From March to August water abundantly, especially during flowering. In the vegetative period, provide fertilizer for bulbous plants dissolved in the watering every 10-15 days. In summer and winter it easily tolerates periods of drought.
The best areas to place the scilla bulbs are the coolest ones and by choosing areas with these characteristics, watering can be reduced.
These bulbous plants prefer loose soils, well drained and rich in organic matter; when planting them it is good to work the soil well by mixing sand and well-ripened organic fertilizer.
In very hot areas after flowering it is good to unearth the Scylla plants and take them to cooler areas for a period, in order to stimulate the bulbs to push back once this period of low temperatures has passed.
In spring it is possible to sow the small seeds that the seedlings produce in large quantities, in fact they usually tend to self-sow. In autumn it is possible to detach the bulbils produced abundantly from the bulbs buried for some years. The division of the bulbs is a delicate operation to be carried out precisely. You will have to proceed with the cutting of the bulbs that have widened and the division, with the help of a sharp blade scissors.
False hyacinth, Siberian squill - Scilla siberica: Pests and diseases
The scilla plants do not suffer from particular diseases and do not have particular parasites that attack them but attention must be paid to the root rot of the bulbs. When the soil remains wet for too long there can be a strong danger of the development of root rot, mold and fungi that can affect the health of our bulbous plants.