Ornamental Onion (Allium): Planting And Care In The Open Field, Species

The ornamental allium onion has about 400 species. Gardeners cultivate about 130 species of this plant. This flower will be a highlight of any garden plot and will look great against the usual asters and tulips.

Growing ornamental onions

Potting

Ornamental onion (Allium): planting and care in the open field, species

After you decide on the plot where you will grow allium, you must dig it, adding mineral fertilizers and humus to the soil. Then prepare the planting holes and water them with a small amount of water.

After the decorative onion is planted, the surface of the plot is covered with a layer of mulch.

Potting in the open soil is carried out in late September, with the soil temperature in the area of root system formation should be about 10 degrees.

Growing

Growing the crop in your garden plot is quite simple, as it is unpretentious in care. It requires timely removal of weeds, regular loosening of the surface and a layer of mulch during the growing season. Allium is watered moderately, but it is one of those plants that tolerate short dryness better than stagnant water in the ground.

Planting, care, varieties

Plot selection

Ornamental onion (Allium): planting and care in the open field, species

The site for its cultivation should be sunny, since this plant is a light-loving one. It needs loose and permeable soil. To prevent fluid stagnation in the root system, we should try to improve the drainage properties of the soil. A suitable soil should have a pH close to 7.0.

Lowlands and those places where there is stagnant water during melting snow and rains are not suitable for growing ornamental onions. For planting, prepare a hole 2 or 3 times the height of the bulb so that the root system will be protected from drying out and from winter frosts.

Do the bulbs have to be dug for winter?

Specialists advise to dig out the bulbs annually after the seeds are fully mature and the leaf plates are dried. They can be planted in the ground again in the fall. For storage, the bulbs are stored in a place where the air temperature does not exceed 18-20 degrees.

Some species can be planted not only in autumn, but also in spring, such as Ostrovska, moth and blue. For storage, it is recommended to put small bulbs in a container with peat or sawdust, this will help prevent them from drying out.

Feeding

Ornamental onion (Allium): planting and care in the open field, species

Feed the allium with wood ash and compost. The plant needs fertilizer during active foliage growth, during bud formation and bulb formation. To make the plant better survive the winter, at the beginning of the autumn period it is recommended to feed it with potassium-phosphorus fertilizer, with undissolved granules in the soil.

Only seedlings of the initial stage of growth can be transplanted.

Allium propagation by seeds

Ornamental onion (Allium): planting and care in the open field, species

Allium grown from seeds will not begin to flower until several years later. For example, the yellow and blue alliums bloom in their third year, while the species with very large flowers (e.g. Schubert, Christoph and Hyginthe) will not bloom until the sixth or seventh year after sowing.

Seeds of the Giant Allium are recommended to be cold stratified, while the Allium aflunum germinates well in a warm place. If conditions are ideal for ornamental onion growth, it can successfully propagate by self-seeding.

Allium propagation by bulbots

Ornamental onion (Allium): planting and care in the open field, species

Allium species sometimes form small bulbs on their inflorescences, which are called bulbots. To stimulate their formation, it is advisable to trim the buds and treat the shrubs with a growth stimulant. Specialists say that bulbs are phytopathogen-free young planting material, so they are recommended for planting.

For example, if bulbous plants of blue allium are planted, the resulting bush will start flowering in the second year already.

Diseases and pests

If the allium is not properly taken care of or if the humidity level is constantly high then the plants may suffer from false powdery mildew or various rotting and may also be infested with onion flies or root mites. To prevent these diseases before planting the bulbs should be heated for 10-11 hours at a temperature of about 40 degrees, it can be done in a dryer or oven. If pests have infested the plant then it should be treated with chlorophos solution (2%), peat, wood ashes or tobacco dust.

Ornamental onions - planting and spring care

Stypes of decorative onions with photos and names

Allium aflatunum (perple sensation)

Ornamental onion (Allium): planting and care in the open field, species

This species can grow up to 150 centimeters tall, with a diameter of 12 centimeters.

The dense, umbrella-shaped, spherical inflorescences consist of pale purple, star-shaped flowers. This plant is notable for its undemanding care, and it also looks very spectacular and unusual during flowering.

Allium gladiator

Ornamental onion (Allium): planting and care in the open field, species

This species and the simple edible onion are very close relatives. The dark green foliage can be used for food if desired. The bush can reach a height of about 100 centimeters.

The star-shaped flowers are blue-lavender in color, with six petals and a slightly sweet pleasant smell. The inflorescences reach up to 20 centimeters across or even more. This kind looks great in alpinaries and stony gardens, and it also goes well with bearded irises.

Allium eros

Ornamental onion (Allium): planting and care in the open field, species

The very beautiful inflorescences of this plant, which are ball-shaped, can have different colors, which range from light lilac to pink. The height of the shrub varies from 0.

3 to 0.35 m with flowers about 10 centimeters across. This plant blooms in June.

Allium round-headed

Ornamental onion (Allium): planting and care in the open field, species

This species blooms quite late in the middle of the summer period, with a flowering duration of approximately 4 weeks. The inflorescences are oval in shape and include pink or purple flowers.

The height of the stems can reach about 0.6 m.

Allium blue

Ornamental onion (Allium): planting and care in the open field, species

This species is among the most decorative allium species. The stems of such a plant can reach about 0.8 m in height.

Its inflorescence reaches about 70 mm across and is a luxuriant umbrella of semi-spherical or globular shape. One inflorescence consists of 200 to 250 bell-shaped blue flowers. The color of the inflorescence is extremely showy and the blue colouring might even appear to be impossible to find on the planet Earth."

Allium moth (yellow onion)

Ornamental onion (Allium): planting and care in the open field, species

The height of this species grows to 0.2-0.

3 m. The loose inflorescences are composed of star-shaped flowers of a rich golden yellow hue. This plant blooms in the last days of May, with a blooming duration of about three weeks.

Allium Christofa

Ornamental onion (Allium): planting and care in the open field, species

This species is considered the most decorative among the medium-growing ones. As a rule, the height of the bush is not more than 0.

3-0.4 m. But if the flower has favorable growing conditions, then the bush can grow up to 0.6 m tall. The globular inflorescence is very large and can grow to about 25 centimeters across.

It consists of a large number of small star-shaped flowers, which may have a purple or violet color. Very spectacular flowering can be seen in June and lasts approximately 30 days.

Allium Ostrovsky

Ornamental onion (Allium): planting and care in the open field, species

This low very spectacular species can reach about 0, 2 m in height. The large, crimson, broad-bell-shaped flowers are very pleasantly fragrant. They are part of the inflorescences, which can reach about 10 centimeters across.

Allium flavory queen

Ornamental onion (Allium): planting and care in the open field, species

This plant is capable of decorating any garden. The height of its stems varies from 0.25 to 0.35 m. Beautiful ivory-colored flowers are formed on their tops, which can reach up to 12 centimeters in cross-section and have a very rich and pleasant fragrance.

But when there are no flowers on the bush, it still looks very impressive thanks to the beautiful foliage. The leaf plates are corrugated and colored in an unusual bluish-green color. Flowering in this species lasts about three weeks.

Allium bulgaricum

Ornamental onion (Allium): planting and care in the open field, species

This species has a bush that can reach about 0.9 meters in height.

Its flowering is observed in the first summer weeks, at which time it is decorated with very showy purple-white flowers gathered in inflorescences.

Allium giant

Ornamental onion (Allium): planting and care in the open field, species

The species gets its name because the bush can reach a height of about 150 centimeters. The umbrella-shaped inflorescences reach about 80 mm across. The star-shaped flowers may be colored pale purple. The squat broad leaflets are strap-shaped.

Flowering is observed in June and lasts about 3.5 weeks.

Allium pea-loving

Ornamental onion (Allium): planting and care in the open field, species

In this low-growing plant, the bulbs are only slightly larger than the size of a pea. The height of the bush varies from 10 to 20 centimeters. The inflorescences consist of 30 to 40 flowers of rich purplish-pink color and wide-column shape.

The bush blooms in the last spring weeks and the duration of blooming is 3 to 4 weeks.

Allium unifolium

Ornamental onion (Allium): planting and care in the open field, species

Native to this plant is North America. It is highly decorative even though its inflorescences are not spheres but loose umbrellas. The height of the bush rarely exceeds 20-25 centimeters. Because the bushes are small and compact, they can be used to create neat compositions, for example planted in containers, if desired.

Allium Schubert

Ornamental onion (Allium): planting and care in the open field, species

The bush can reach a height of 25 to 30 centimeters and is decorated with pinkish-gray star-shaped inflorescences. It blooms in June. It does not look at all like an onion and only a professional can tell if Shubert's allium is a relative.

Allium Kovani

Ornamental onion (Allium): planting and care in the open field, species

This species is an early bloomer and blooms in May and June. Its long stems reach a height of 0.

3 to 0.4 meters and form showy inflorescences on the tops consisting of small snow-white flowers, up to 40 mm across with a pleasant odor. The duration of flowering is 15 to 20 days. If you rub the shoots or leaves, you can smell garlic.

Allium neapolitanum

Ornamental onion (Allium): planting and care in the open field, species

The low bush can reach 25 to 35 centimeters in height.

Its broad-bell-shaped pink flowers are 10 to 14 mm long and arranged in a flat or slightly convex umbrella-shaped inflorescence.

Alliums are decorative bows.How to properly plant and grow bows in your garden.

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