Showing posts with label tree. Show all posts
Showing posts with label tree. Show all posts

Planting a tree

To plant a tree we need to dig a hole three times the size of the pot of the tree.

Once the hole is digged we will untighten the roots of the tree so they do not go circular and they can grow properly.

We will put some water into the hole to see if it drains. If it does we put some compost on the bottom, if it does not drain we will place some pebbles or sand and then the compost.

We lay the roots on the hole and cover with soil avoiding to leave air in the middle.

We press the soil on the top and put some more compost over it.


We can stake the tree to help it grow straight even if there are hard winds. We will place the stake on the side of the dominant wind, at a distance of 20cm of the tree and we will tie the stake to the tree with rubber cords to allow the tree to have flexibility when it gets the wind.

Never stake a tree longer than two years. Its root should develop properly to give enough strength to the tree to hold by its own roots.

The tree we planted is a cherry tree.



Pruning a tree

Scar in the bark due to wrong pruning

When we prune a tree we have to be careful not to make scars on the bark. If the pruning of a branch is done to close to the bark, it will leave a scar in the bark and the inner part of the trunk will be exposed to air, therefore to fungi and roteness.







When pruning a branch we should always leave at least 2-3 cm of the branch out of the trunk, so when the bark reabsorbes it, does not make any scar in the tree.

Proper pruning leaving 2-3cm of distance to the trunk




How it should look after pruning



Scar due to a too tight staking of the tree

Other scars in the tree may be done by a bad staking. It we stake the tree too tight or with a hard material that is not rubber, the wind will make the string rub the bark and cause a scar like the one shown in the photo.

Oaks

An oak is a tree or shrub in the genus Quercus, of which about 600 species exist.  The genus is native to the Northern Hemisphere, and includes deciduous and evergreen species extending from cool temperate to tropical latitudes in Asia and the Americas.

Oaks have spirally arranged leaves, with lobed margins in many species; some have serrated leaves or entire leaves with smooth margins. Many deciduous species are marcescent, not dropping dead leaves until spring. The flowers are catkins, produced in spring. The fruit is a nut called an acorn, borne in a cup-like structure known as a cupule; each acorn contains one seed (rarely two or three) and takes 6–18 months to mature, depending on species.

In Ireland the most common oaks are:

Sessile - Quercus Petraea


Peduncular Oak (Irish) - Quercus robus











The oaks are one of the most valuable biodiversity plants. They can support over 300 species of wild life (insects and birds mainly).

Pines can also support a handful.

Ash - Fraxinus















Latin plant name Fraxinus
Common plant name Ash (fresno)
Plant type Tree
Size (meters) <10-45 m
Distinguishing features Both names, Latin and English, have the same meaning, spear.

The leaves are opposite (rarely in whorls of three), and mostly pinnately compound, simple in a few species. The seeds, popularly known as keys or helicopter seeds, are a type of fruit known as a samara.

Ash is a hardwood.

Extensively used for making bows, tool handles, baseball bats, hurleys and other uses demanding high strength and resilience.

There is a severe pest attacking the ashes all over Europe.

Chalara dieback of ash is a serious disease of ash trees caused by a fungus called Chalara fraxinea (C. fraxinea). The disease causes leaf loss and crown dieback in affected trees, and usually leads to tree death.

Coppicing

Coppicing is a traditional method of woodland management which takes advantage of the fact that many trees make new growth from the stump or roots if cut down. In a coppiced wood, young tree stems are repeatedly cut down to near ground level. In subsequent growth years, many new shoots will emerge, and, after a number of years the coppiced tree, or stool, is ready to be harvested, and the cycle begins again. (The noun "coppice" means a growth of small trees or a forest coming from shoots or suckers.)

Typically a coppiced woodland is harvested in sections or coups on a rotation. In this way, a crop is available each year somewhere in the woodland. Coppicing has the effect of providing a rich variety of habitats, as the woodland always has a range of different-aged coppice growing in it, which is beneficial for biodiversity. The cycle length depends upon the species cut, the local custom, and the use to which the product is put. Birch can be coppiced for faggots (bundles of brushwood) on a three- or four-year cycle, whereas oak can be coppiced over a fifty-year cycle for poles or firewood.



We can coppice different types of trees:
  • Oak (usually used for fences)
  • Sweet chestnut (usually used for fences)
  • Hazel (used for furniture)
  • Ash
  • Sycamore
  • Willow (used for fuel and weaving)
  • Lime (used for decoration)

Sometimes they do the coppicing taking part of the root, where the tree curves and gets into the groudn. There we can find the most flexible part of the tree, as it is where all the water is found.

Beech

Autumn Spring
Copper/Purple beech Rusty brown leaves Purple leaves
Common/Green beech Rusty brown leaves. They can keep the leaves better during winter Green leaves

The beech as the oak can make a nice bush. (haya)

The beech as a bush needs shelter from:

  • Wind
  • Animals (rabbits and goats)

Identifying nearby plant

We collected branches from trees near our homes to identify them in the classroom


Silver maple

Pine tree



Ash

Tree planting distances

Very little root action leading to subsidence damage to buildings in the UK is caused by direct physical pressure exerted by roots. A tree has to be very close to the structure indeed for such damage to occur. Planting a tree so close to a structure that trunk buttressing or increase in trunk diameter was being restricted could lead to damage. More commonly, pavements and boundary walls with little or no foundation may be lifted by large shallow roots of, for example, Populus, poplar, species. Buildings with adequate foundations, standing some distance from trees, are very rarely subject to such direct damage.

Most reported damage is secondary in nature. The problem is confined largely to soil types that shrink considerably on drying. In the UK these are mainly certain types of clay and some peaty, fen soils. Under conditions of drought when tree roots remove water from shrinkable soils, they accelerate the drying and shrinking process. This can lead to loss of support to inadequate foundations and subsequent subsidence. Continued drought, even in the absence of trees, can lead to subsidence in such circumstances.

Tree root spread data have most relevance to relatively ‘safe’ planting distances when relating to trees growing on shrinkable clay soils. Planting distances on other soil types that do not contract on drying have to be determined more by consideration of the respective scale of the buildings and trees, the ultimate size of the trees, and the desirable or undesirable qualities of the trees concerned.



Salix - Willow












Latin plant name Salix
Common plant name Willow
Plant type Tree
Size (meters) <5-15 m
Distinguishing features Found primarily on moist soils in cold and temperate regions of the Northern Hemisphere.

They came to Ireland right after the melting of the ice age thanks to their light seeds that can be blown by the wind, along with the grasses and the beerchs.

Willows all have abundant watery bark sap, which is heavily charged with salicylic acid, soft usually pliant tough wood, slender branches and large fibrous often stoloniferous roots. The roots are remarkable for their toughness, size, and tenacity to life, and roots readily grow from aerial parts of the plant.

The leaves are typically elongated, but may also be round to oval, frequently with a serrated margin. Most species are deciduous; semievergreen willows.

Willows are dioecious, with male and female flowers appearing as catkins on different plants; the catkins are produced early in the spring, often before the leaves, or as the new leaves open.

Basic crafts, such as baskets, fish traps, wattle fences and wattle and daub, house walls, were often woven from osiers.

Willow wood is also used in the manufacture of boxes, brooms, cricket bats (grown from certain strains of white willow), cradle boards, chairs and other furniture, dolls, flutes, poles, sweat lodges, toys, turnery, tool handles, veneer, wands and whistles.

Alnus - Alder













Latin plant name Alnus
Common plant name Alder (alisos)
Plant type Tree
Size (meters) <20-40 m
Distinguishing features With a few exceptions, alders are deciduous, and the leaves are alternate, simple, and serrated. The flowers are catkins with elongate male catkins on the same plant as shorter female catkins,

These trees differ from the birches (Betula, the other genus in the family) in that the female catkins are woody and do not disintegrate at maturity, opening to release the seeds in a similar manner to many conifer cones.

Alder leaves and sometimes catkins are used as food by numerous butterflies and moths.

Alder bark contains the anti-inflammatory salicin, which is metabolized into salicylic acid in the body.

As a hardwood, alder is used in making furniture and cabinets and other woodworking products.

Acer - Maple













Latin plant name Acer
Common plant name Maple
Plant type Tree
Size (meters) <10-45 m
Distinguishing features
The word Acer derives from a Latin word meaning "sharp" (compare "acerbic"), referring to the characteristic points on maple leaves.

Most species are deciduous, but a few in southern Asia and the Mediterranean region are evergreen. Most are shade-tolerant

Maples are distinguished by opposite leaf arrangement. The leaves in most species are palmate veined and lobed.

A maple leaf is on the coat of arms of Canada, and is on the Canadian flag. The maple is a common symbol of strength and endurance and has been chosen as the national tree of many countries including Canada.

Maples are planted as ornamental trees

Some of the larger maple species have valuable timber. Maple is considered a tonewood, or a wood that carries sound waves well, and is used in numerous musical instruments

Ginkgo biloba












Latin plant name Ginkgo biloba
Common plant name Ginkgo
Plant type Tree
Size (meters) <20- 30 m
Distinguishing features The ginkgo is a living fossil, as a unique species recognisably similar to fossils dating back 270 million years. Native to China, the tree is widely cultivated and introduced early in human history, and has various uses as a food and in traditional medicine.

The tree has an angular crown and long, somewhat erratic branches, and is usually deep rooted and resistant to wind and snow damage.

During autumn, the leaves turn a bright yellow, then fall, sometimes within a short space of time (one to 15 days).

A combination of resistance to disease, insect-resistant wood and the ability to form aerial roots and sprouts makes ginkgos long-lived, with some specimens claimed to be more than 2,500 years old.

Ginkgo is a relatively shade-intolerant species that (at least in cultivation) grows best in environments that are well-watered and well-drained.

The leaves are unique among seed plants, being fan-shaped with veins radiating out into the leaf blade.

Ginkgos are dioecious, with separate sexes, some trees being female and others being male. Male plants produce small pollen cones with sporophylls, each bearing two microsporangia spirally arranged around a central axis.

Female plants do not produce cones. Two ovules are formed at the end of a stalk, and after pollination, one or both develop into seeds.

Araucaria - Monkey puzzle












Latin plant name Araucaria
Common plant name Monkey puzzle
Plant type Conifer evergreen tree
Size (meters) < 40 m
Distinguishing features Because of the species' great age it is sometimes described as a living fossil.

Araucaria araucana is the national tree of Chile.

The leaves are thick, tough and scale-like, triangular, 3–4 cm long, 1–3 cm broad at the base, and with sharp edges and tip. They persist for 10–15 years or more, so cover most of the tree except for the older branches.

It is usually dioecious, with the male and female cones on separate trees, though occasional individuals bear cones of both sexes. The male (pollen) cones are oblong and cucumber-shaped, 4 cm long at first, expanding to 8–12 cm long by 5–6 cm broad at pollen release. The tree is wind pollinated. The female (seed) cones, which mature in autumn about 18 months after pollination, are globose.

Leylandis












Latin plant name Cupressus x leylandii
Common plant name Leylandii
Plant type Coniferous evergreen tree
Size (meters) < 15 m
Distinguishing features Rapid and thick growing.

Leyland Cypress is light-demanding but is tolerant of high levels of pollution and salt spray. A hardy, fast-growing natural hybrid, it thrives on a variety of soils and sites are commonly planted in gardens to provide a quick boundary or shelter hedge, because of their rapid growth. Although widely used for screening, it has not been planted much for forestry purposes.

Sequoia - Redwood












Latin plant name Sequoioideae
Common plant name Redwood
Plant type Conifer tree
Size (meters) They are the tallest trees in the world.
Distinguishing features The entire subfamily is endangered.

They are also used in educational projects recreating the look of the megaflora of the Pleistocene landscape.

Laburnum - Golden chain







Latin plant name Laburnum
Common plant name Golden chain
Plant type Decidious tree
Size (meters) < 2 m
Distinguishing features All parts of the plant are poisonous, and can be lethal if consumed in excess. Symptoms of laburnum poisoning may include intense sleepiness, vomiting, convulsive movements, coma, slight frothing at the mouth and unequally dilated pupils. In some cases, diarrhea is very severe, and at times the convulsions are markedly tetanic. The main toxin in the plant is cytisine, a nicotinic receptor agonist.

They have yellow pea-flowers in pendulous racemes 10–30 cm (4–12 in) long in spring, which makes them very popular garden trees.

Prunus cerasifera nigra - Black cherry tree















Latin plant name Prunus cerasifera nigra
Common plant name Black cherry tree
Plant type Tree
Size (meters) 6 - 15 m
Distinguishing features It is grown for its flowers that can go from white to pinkish.

It doesn't have a juicy fruit.

The variety 'Nigra' with black foliage and pink flowers, has gained the Royal Horticultural Society's Award of Garden Merit.

Tilia cordata - Lime tree


















Latin plant name Tila cordata
Common plant name Lime tree
Plant type Tree
Size (meters) 20- 38 m
Distinguishing features It is a deciduous tree growing to 20-38 m tall, with a trunk up to 1-2 m diameter. The leaves are alternately arranged, rounded to triangular-ovate, 3-8 cm long and broad, mostly hairless.

The small yellow-green hermaphrodite flowers are produced in clusters of five to eleven in early summer and have a rich, heavy scent; the trees are much visited by bees.

The fruit is a dry nut-like drupe 6–7 mm long and 4 mm broad, downy at first becoming smooth at maturity. It has a single seed.

Buds are alternating boxing globes.

A valuable monofloral honey is produced by bees using the trees. The young leaves can be eaten as a salad vegetable.

The white, finely-grained wood is a classic choice for refined woodcarvings.

It is native to France.

They can be shapped.