Krupka, or drab, is a plant widely distributed in the cold zone of the Northern Hemisphere, especially in the mountain zone. We grow more than 90 species of it. These are small, mostly rosette plants, forming dense or loose turfs 5-7 cm tall with wintering leaves. Peduncles numerous, towering above the plant. Small, yellow, less often - white flowers are collected in racemose inflorescences. Abundant, massive flowering, when the green surface of plants is painted with a continuous carpet of flowers, is typical for most grains. They bloom in the spring, in April-May, sometimes there is a weak re-bloom.
In gardening, several types of grits are promising.
Krupka grows with dense, low (3-5 cm) pillows. The flowering is plentiful, long. Its peak falls on the first half of May. The flowers are bright yellow, collected in a capitate inflorescence.
Mossy Krupka forms pillows like bruniellum grains, but blooms a week earlier.
Siberian Krupka very different in appearance from previous species. It has thin, branching, creeping shoots on the ground with small dark green leaves that form a dense ground cover. Flowering is very plentiful. Peduncles rise to a height of 15-20 cm. The flowers are bright yellow. It blooms from the first of May for 30 days.
Grains propagate by seeds, often give abundant self-sowing. When co-growing different species, the latter are pollinated. Vegetative propagation is possible. Sockets (cuttings) are well rooted with little shading and sufficient watering. Cuttings are best done after flowering, in June.
All types of cereals prefer open, well-drained areas with light sandy or crushed soil with the addition of lime. Suffer from getting wet in spring and autumn. Use them as ground cover (Siberian nibs), carpet plants or in rockeries; they look very good among tile coverings.