Biennial ornamental plants
| Name | Name | Height | Number of plants per m2 | Flowering time | Color of flowers |
| Ageratum | 15-25 | 100 | VI-IX | White, blue, lilac | |
| Alissum | 10-20 | 100 | VI-X | White, purple | |
| Astra | 15-50 | 16-25 | VIII-IX | White, blue, blue, violet, pink, red, yellow | |
| Marigolds high | 60-100 | 10-25 | VII-IX | Orange, yellow | |
| Marigolds are low | 30-50 | 10-25 | VII-IX | Orange, yellow | |
| Begonia | 15-25 | 100 | V-IX | White, redred | White, blue, pink, red, purple |
| Carnation Shabo | 40-60 | 25 | VII-IX | White, pink, red, yellow | |
| Heliotrope | 25-30 | 25-50 | VI-X | Purple | |
| Iberis | 25-30 | 25 | VI-IX | White, lilac, purple | |
| Calendula | 50-70 | 9-25 | VI-VIII | Orange, yellow, red | |
| Clarkia | 40-50 | 16-25 | VI-IX | White, pink, purple | |
| Cosmey | 70-100 | 16 | VI-IX | White, pink, red | |
| Levkoi | 20-80 | 25-50 | VI-VIII | White, blue, purple, pink, yellow | |
| Lobelia | 10-15 | 100 | VI-IX | White, blue, blue | |
| Poppy | 60-100 | 25 | VII-VIII | White, pink, red, purple | |
| Mattithiol | 30-40 | 25-50 | VII | Purple | |
| Nasturtium | 25-30 | 16-25 | VII-IX | Orange, red, yellow | |
| Petunia | 25-35 | 25 | VI-IX | White, blue, purple, pink, red | |
| Reseda | 20-40 | 25 | VI-IX | White, yellow | |
| Chamomile | 50 | 25-50 | VII-IX | White | |
| Salvia | 20-40 | 25-50 | VII-IX | Red | |
| Scabiosa | 60 | 25 | VII-X | White, blue, red | |
| Tobacco fragrant | 60-80 | 10-25 | VI-X | White, pink, red | |
| Phlox Drummond | 30-40 | 50 | VI-X | White, blue, pink, purple | |
| Chrysanthemum | 50-60 | 25 | VII-IX | White, yellow, red | |
| Zinnia | 40-60 | 25-50 | VII-IX | White, pink, red, orange, yellow | |
| Ashdolla | 25-40 | 50 | VI-IX | Yellow, red |
Biennials are plants that have a development cycle for 2 years. Typical biennials are characterized by the fact that in the year of sowing they usually do not blossom, they form a rosette of leaves, deciduous mass, form a plant, flowering occurs only the next year. Such biannuals include the middle bell, forget-me-not, night violet( Hesperis, poppy alpine, mullein, lunnitsa).Some perennials are cultivated as biennials: carnations, daisy, foxglove, Vitrokka violet( pansy), shtokrosu( malva), and evening primrose. These plants do not die after 2 years, but can continue to develop in the years to come, however
The characteristics of some
annuals are small and degenerate. Therefore, perennials are grown according to a two-year scheme, since in the second year they develop most actively, abundantly bloom and have a good decorative appearance.
Biannuals are grown according to the following scheme: sowing in the early to mid summer, one sprouting shoot, landing at the end of summer, flowering in spring or early summer next year. In gardening and garden culture biennials are widespread, as they bloom in the spring or early summer. For example, violet, forget-me-not, daisy are irreplaceable plants for spring floral decoration, easily transfer the transplant in blossoming condition.
Carnation, bell, hesperis( terry form) give a fine cut material, stable in water and easily transportable.
For the most part, biennials are cold-resistant and undemanding plants that form full-fledged virgin seeds. Such biennials as forget-me-not, poppy, bell, carnation, carnion, are easily seeded, you can get good strong seedlings from self-seeding.
Mass sowing of biennials in the open ground is carried out in the third decade of May or the first or second decade of June: a clove of grenadines, Turkish, bell, medium, foxglove, shrochrose pink( malva).The site for them should be prepared in the autumn. In the spring, heavy soils are dug to a depth of 18-20 cm, the lungs simply loosen. The biennials are sown immediately to the site, and then thinned or on the sowing ridge with the subsequent picking in the development phase of the first real leaf and planting in the soil to the place in August - early September. Seeds are sown in moist soil, if it is dry, it must be watered. Seeds are sprinkled with a thin layer of dry earth( not more than 0.5 cm) and compacted. On 1 m2 2-3 grains of Vitrokka violet seeds, 1,5-2 g of gesperis, daisies and forget-me-nots are sown. In sunny weather, crops are pritenyayut using cover material, which at the corners pressed to the ground with stones. Seeds germinate in 7-14 days. When emergence of sprouting material is not removed, but only slightly relaxes its tension, giving space to the growing seedlings. In summer, the seedlings of biennials can wither quickly in the heat, so they should be watered daily in the morning, and sometimes in the evening, raising the covering material.
Along with seed reproduction for almost all biennials, an insufficiently widespread method of propagation by green cuttings in the open ground can be recommended. In addition, a number of biennials( daisies, forget-me-nots, violets, foxglings, etc.) can be multiplied by dividing bushes. Application of vegetative propagation( cuttings, fission) is of particular value: with this method of reproduction, the decorative qualities of the mother plant are completely preserved, which is especially important when they are trying to obtain specimens with deliberately monochromatic or dusky flowers. With seed multiplication, this can not always be achieved.
Timing of sowing in open ground of some biennials
Plant Planting time
( month / decade)
Pansies May III, June II
Handbell Medium May, June
Mack Alpine May, September
Malva( shtroroza) May I
Daisy June IIDigitalis purple May, September
Forget-me-not May, June
Turkish carnation May, September
Enotera May III, June
A great advantage of the biennial culture is that when propagating them both in seed and vegetative ways is not requiredgreenhouses and greenhouses. Thanks to this
Characteristics of some biennials
| Name | Height, cm | Number of plants per m2 | Flowering time | Color of flowers |
| Pansies | 15-20 | 16-25 | V-VI | Blue, white, blue, purple, red, Pink asd |
| Pink asd | 30-50 | 10-25 | VI-VII | White, pink, red |
| Hand bell | 50-70 | 10-25 | VI-VII | White, blue, lilac, pink |
| Malva( shozroza) | 150-200 | 1-4 | VII-IX | White, pink, red, yellow |
| Daisy | 10-15 | 50 | V-VI | White, pink, red |
| Digitalis | 100-150 | 10-25 | VI-VII | White, lilac, pink, red |
| Forget-me-not | 20-35 | 25-50 | VI-VII | White, blue, pink |
| Enotera | 20-25 | 15-20 | V-VI | Yellow |
reproduction and growing of biennials is very affordable in different climatic conditions. In addition, it is much cheaper cost of obtaining seedlings of almost all species of biennial ornamental plants.