When will the latest eucalyptus blossom?

Eucalyptus, also known as white diesel, mango, Youjali, big-leaf eucalyptus, etc., is the general name of the genus Eucalyptus of the myrtle family. The vast majority of its origin grows in the Australian mainland, born on sunny plains, hillsides and roadsides, and is cultivated in the south and southwest of our country. Let's take a look at when eucalyptus blossoms!

When does eucalyptus blossom?

Eucalyptus grows very rapidly, generally blooming and fruiting in 3-4 years after afforestation, but the flowering time of different varieties is also different. usually, the flowering period of Eucalyptus urophylla (Eucalyptus microphylla) is in June, that of Eucalyptus grandis is from April to September, that of lemon Eucalyptus is from November to January of the following year, that of fast-growing Eucalyptus from mid-September to mid-October, that of Eucalyptus urophylla is from August to September, and that of Eucalyptus globulus is usually in spring and autumn.

Is eucalyptus poisonous or not?

Eucalyptus is not poisonous. Research by the Eucalyptus Research Center of the State Forestry Administration shows that eucalyptus is not only non-toxic, but also can be directly used by animals and human beings. Eucalyptus has eucalyptus oil, a kind of natural compound extracted from eucalyptus leaves, which can be used in cosmetics. For example, Head & Shoulders also contains eucalyptus essence, and many of the raw materials of medicine contain eucalyptus oil. it can also be used as oral, rhinitis, expectorant, cool oil, throat tablet sugar, expelling wind ointment and other medicinal materials. Eucalyptus oil contains cineol, which is mainly used in toothpaste, mouthwash, food and medicine.

Common cultivated varieties of eucalyptus

1. Eucalyptus urophylla: Eucalyptus urophylla is a large tree, 25 meters high. Bark smooth, gray-white, long flaky. Twigs rounded, slender, pendulous. Young leaf blade ovate. Transitional leaves broad-lanceolate. Mature leaf blade narrowly lanceolate, slightly curved. Umbels axillary, peduncles stout. The buds are oval. Stamens; anthers longitudinally lobed, capsule subglobose. The country of origin is in the eastern coastal area of Australia, with the highest elevation of 1800 meters, which is commonly found in loam with sufficient precipitation. It is resistant to light frost in winter and is not suitable for acidic soil. Guangdong, Guangxi, Fujian, Guizhou, Yunnan and other places are planted, and the wood is pale. For construction, vehicles, ships, machinery, sleepers and so on.

2. Eucalyptus camaldulensis: Eucalyptus camaldulensis is the most widely distributed in Australia, which is distributed almost everywhere except desert and semi-desert. The more moderate condition is the zone below 250 meters above sea level, the annual precipitation is 250-600 mm, and there is only light frost habitat in winter. It is most common along rivers. It is also planted in a wide area in China, which is cultivated from South China to Southwest China. It is an ideal tree species with rapid growth and a certain degree of drought and cold tolerance. Red wood, strong corrosion resistance, suitable for sleepers and stakes.

3. Lemon eucalyptus: lemon eucalyptus is a large evergreen tree with a height of up to 40 meters and a breast diameter of 1.2 meters. Its stem shape is towering and straight, and its bark is smooth and white. It is known as the "fairy in the forest". Native to Australia, it has been introduced in China for nearly a hundred years, and it has been cultivated in South China, Fujian, Zhejiang, Yunnan, Sichuan and other places. Xiguang, with strong adaptability to climate and soil, drought tolerance, fast growth and high timber yield, is an important afforestation tree species in South China, which is suitable for afforestation in the lower part of southern hills, coastal mountains and four sides greening. At the same time, it is also an important fast-growing timber tree species and a good aromatic oil tree species in the south.

4. Eucalyptus: Eucalyptus angustifolia, also known as Eucalyptus urophylla, wind-blown willow, etc., originates from basalt and sandstone areas along the eastern coast of Australia to more arid areas in the interior, and is widely planted in South China. Afforestation experiments have been conducted on a large area in Leizhou Peninsula, Guangdong, and preliminary results have been achieved. The stem of the seedling is more buckled, and the sprouting stem is more straight after cutting and renewing. It is a commonly used tree species in afforestation in South China at present, but it is less resistant to wind and can not bear the attack of typhoon. The wood is reddish, hard and resistant to decay, and the leaves contain 0.82% oil.

5, big leaf eucalyptus: big leaf eucalyptus is dense shade big tree, up to 20 meters high, bark does not peel off, dark brown, have irregular oblique crack groove. Twigs are angled. Young leaves opposite, leathery, ovate, stipitate. Mature leaves alternate, leaves thickly leathery, ovate-lanceolate, unequal on both sides, with glandular spots on both sides. Umbels thick, peduncles compressed, pedicels short, thick and flattened, petals and sepals forming a calyptra. The upper part of the capsule ovate-shaped contracted slightly, the mouth of the capsule enlarged slightly, and the florescence was from April to September. Born on sunny plains, hillsides and roadsides, it is native to the north of the southern latitude of Australia and is cultivated in the south and southwest of China.

6. Oblique vein Eucalyptus: the height of oblique vein Eucalyptus is 20 meters. The bark is persistent, dark brown and square-lobed like pine bark. Twigs are angled. Young leaves opposite, leaf blade ovate or broadly lanceolate, up to 7 cm wide. Mature leaves leathery, lanceolate, slightly curved, with fine black glandular spots on both sides. Umbels axillary, peduncles flattened, buds fusiform, pointed at both ends, cap as long as calyx tube, apex acuminate. Capsule subglobose or bell-shaped, fruit margin flush with calyx tube mouth, protruding outside calyx tube, florescence from August to September. The origin is in the humid saline-alkali soil along the eastern coast of Australia. It is cultivated all over South China. It grows rapidly, has strong sprouting ability and is barren-tolerant.

7. Eucalyptus globulus: blue eucalyptus is also known as grass fruit, ash willow, Yushu oil tree, etc., with grayish blue bark, flaky peeling off and slightly angled twigs. Young leaves opposite, sessile, glaucous. Flowers large, 4 mm wide, solitary or 2-3 clustered in leaf axils. Sessile or very short. Calyx tube obconic, with 4 corners and tubercles on the surface, covered with albino. The cap is slightly flattened and caducous. Stamens multi-row, filaments slender, anthers elliptic. Style 7-8 mm long, stout. Capsule hemispherical, 4-angled, margin flat and broad, petals not prominent. Distributed in Guangxi, Yunnan, Sichuan and other places of cultivation, the northernmost to Chengdu and Hanzhong, leaves and fruits used in medicine.

8. Straight Eucalyptus globulus: the bark of Eucalyptus urophylla is grayish blue, falling off year by year, and there is persistent bark at the base. Twigs rounded and angled. The young leaves are many opposite, the leaves are ovate to round, and the mature leaves are lanceolate. Umbels have 3-7 flowers, peduncles compressed or angled, buds elliptic, calyx tube obconical, calyx triangular-paniculate, as long as calyx crown. The capsule is bell-shaped or obconical, the fruit margin is broad, and the flowering and fruiting stage is usually in spring and autumn. Native to Australia, it has been introduced and cultivated for less than 100 years. It is mainly produced in Yunnan, Guangxi, Guangdong, Hainan, Guizhou, Sichuan and other places. It is born on sunny plains, hillsides and roadsides.