From 2015, 2015年より、


The English version is "Slow Life - Tidings of four seasons".
I am weak in English. For that reason I aim at something like picture book, that is represented by words of a little.


Aromaphloia アロマフロイア』では、バラやアロマオイルなどユーカリ以外のものを掲載しています。


Leaf damage of Eucalyptus

As for the following eucalyptuses, a leaf has begun to dry.

Botanical name : Eucalyptus erythrocorys
Common name : Illyarie

Botanical name : Eucalyptus tenuiramis
Common name : Silver peppermint

This eucalyptus grows naturally in a cold region in Tasmania, but seems to be weak at gelid wind.

Botanical name : Eucalyptus coccifera
Common name : Tasmanian Snow Gum

This eucalyptus grows naturally on the snowy falling mountain in Tasmania, but seems to be weak at gelid wind.


Leaf damage of Eucalyptus

Damage like lehmanni is as follows.

Botanical name : Eucalyptus pluricaulis ssp porphyrea
Common name : Purple-leaved mallee

Botanical name : Eucalyptus polybractea
Common name : Blue-leaved mallee

Botanical name : Eucalyptus leucoxylon ssp pruinosa
Common name : Inland blue gum

The similar damage is as follows, but a terminal bud seems to be all right.

Botanical name : Eucalyptus forrestiana
Common name : Fuchsia gum

Botanical name : Eucalyptus torquata
Common name : Coral gum

The whole is dry.

Botanical name : Eucalyptus decipiens ssp adesmophloia
Common name :

Botanical name : Eucalyptus decipiens ssp chalara
Common name :

Botanical name : Eucalyptus tetraptera
Common name : Square-fruited mallee

Botanical name : Eucalyptus tetraptera
Common name : Square-fruited mallee
I put this 1 pot under the eaves and a weak wind, but may be not able to bear with low temperature.

From wilt by freeze, a terminal bud seems to have died.

Botanical name : Eucalyptus smithii
Common name : Gully gum / Gully peppermint / Blackbutt peppermint


Leaf damage of Eucalyptus lehmannii

Botanical name : Eucalyptus lehmannii
Common name : Bushy yate / Spider gum

The place where lehmannii was put is five places.

A. 1 pot : The place is weather-beaten and strong wind and not get much sunshine.
B. 5 pots : The place is weather-beaten and strong wind and a shade.
C. 3 pots : The place is weather-beaten and a shade and it was shut out a little the wind by other eucalyptuses.
D. 2 pots : The place is under the eaves and gets wind and that is get much sunlight.
E. 1 pot : The place is under the eaves and a shade and a weak wind.

Lehmannii of this photograph is B place.

A. It is almost the same damage as B place.
B. Most are upper damage.
C. There is hardly damage.
D. There is some damage in the upper part of the seedling.
E. It is one pot, but there is no damage.

When lehmannii is exposed to the wind that is colder than the freeze of the plant pot, the damage seems to come out.


Leaf of Eucalyptus coccifera of purple.

Botanical name : Eucalyptus coccifera
Common name : Tasmanian snow gum

The leaf of coccifera has curled it by the cold wave that continued for a while.

But I found not only a bad thing but also the beautiful thing.

The back of the leaf of coccifera was beautiful purple.

I am healed.


A braird of Eucalyptus rudis died.

Botanical name : Eucalyptus rudis
Common name : Flooded gum

Eucalyptus rudis seems not to have been able to win the cold though it grew up lustily in peasy summer.


Needle ice

The thermometer in the place where I put a eucalyptus was about -4 degree Celsius.

Needle ice lifted the potting compost.

Under the eaves?

Needle ice has not been generated though the potting compost was frozen.

The temperature differs a little when 'Plant pot put on a weather-beaten place' and 'Plant pot put under the eaves' are compared.


"Slightly different" is "Greatly different"

What it is the title which it does not understand well, but it is the plant pot place in the winter season.

It is a photograph after 2 days when the watering was done all together in spite of winter.

The following two photographs

The plant pot of the completely weather-beaten place.

The plant pot under the eaves.

If it rains even if it is under the eaves, it is a place that becomes water-soak according to the wind.

There are not fluctuated the temperatures, because it puts two plant pots on the place of about one meter.

Why is it different?

Is it frost?

Frost is the solid deposition of water vapor from saturated air.

If a solid surface is chilled below the dew point of the surrounding air and the surface itself is colder than freezing, frost will form on the surface. Frost consists of spicules of ice which grow out from the solid surface. The size of the crystals depends on time, temperature, and the amount of water vapor available. Based on wind direction, "Frost arrows" might form.

In general, for frost to form the deposition surface must be colder than the surrounding air. For instance frost may be observed around cracks in cold wooden sidewalks when moist air escapes from the ground below. Other objects on which frost tends to form are those with low specific heat or high thermal emissivity, such as blackened metals; hence the accumulation of frost on the heads of rusty nails. The apparently erratic occurrence of frost in adjacent localities is due partly to differences of elevation, the lower areas becoming colder on calm nights. It is also affected by differences in absorptivity and specific heat of the ground which in the absence of wind greatly influences the temperature attained by the superincumbent air.

From Wikipedia "".

When easily explaining

1. A potting compost becomes cold.
2. A certain atmospheric steam is frozen near potting compost.
3. 2 is repeated.

We say "Frost falls from the sky toward ground" in Japan.
However, it is actually what freezes sequentially from ground.

If frost is not falls from the sky toward ground, eaves are unrelated.

But the plant pot under the eaves is not frozen.

About the radiational cooling.

Radiative cooling is the process by which a body loses heat by radiation. In the case of the earth-atmosphere system it refers to the process by which long-wave (infra red) radiation is emitted to balance the absorption of short-wave (visible) energy from the sun.

The exact process by which the earth loses heat is rather more complex than often portrayed. In particular, convective transport of heat, and evaporative transport of latent heat are both important in removing heat from the surface and redistributing it in the atmosphere. Pure radiative transport is more important higher up. Diurnal and geographical variation further complicate the picture.

The large-scale circulation of the Earth's atmosphere is driven by the difference in absorbed solar radiation per square meter, as the sun heats the Earth more in the Tropics, mostly because of geometrical factors. The atmospheric and oceanic circulation redistributes some of this energy as sensible heat and latent heat partly via the mean flow and partly via eddies, known as cyclones in the atmosphere. Thus the tropics radiate less to space than they would if there were no circulation, and the poles radiate more; however in absolute terms the tropics radiate more energy to space.

Radiative cooling is commonly experienced on cloudless nights, when heat is radiated into space from the surface of the Earth, or from the skin of a human observer. The effect is well-known among amateur astronomers, and can personally be felt on the skin of an observer on a cloudless night. To feel the effect, one compares the difference between looking straight up into a cloudless night sky for several seconds, to that of placing a sheet of paper between one's face and the sky. Since outer space radiates at about a temperature of 3 kelvins (-270 degrees Celsius or -450 degrees Fahrenheit), and the sheet of paper radiates at about 300 kelvins (room temperature), the sheet of paper radiates more heat to one's face than does the darkened cosmos. The effect is blunted somewhat by Earth's surrounding atmosphere which also traps heat. Note that it is not correct to say that the sheet "blocks the cold" of the night sky; instead, the sheet is literally warming your face, just like a camp fire warms your face; the only difference is that a campfire is several hundred degrees warmer than a sheet of paper, just like a sheet of paper is several hundred degrees warmer than the deep night sky.

From Wikipedia "".

As for the plant pot of the weather-beaten place, an electromagnetic wave of the potting compost is effused in preparation for outer space, and temperature of the potting compost deteriorates.

As for the plant pot of under the eaves, a temperature fall of the potting compost shrinks by the electromagnetic wave which the wall and the eaves emit.

It is a little difference whether freeze or do not freeze, it is a turning point.


Temperature of my home

The lowest temperature and the highest temperature of Hirakata Osaka Japan.
It is a transition of the temperature in the region where I am growing the eucalyptus.

It is a transition of the lowest temperature of the past 30 years.

The temperature never lowers than USDA Zone 9b recently.

It is a graph according to the day of 2010.

A red line is the highest temperature.
A blue line is the lowest temperature.

It is a several days that temperature lowers than USDA Zone 10a.

The data from the Japan Meteorological Agency.


I will divide blog into a Japanese edition and English edition.

My blog was linked to TREES ONLINE of GIT Forestry Consulting's Blog "EUCALYPTOLOGICE" when I searched it in "Osakano Jie" casually.
Of course it is blog of Kayakiss-san and Koaramate-san too.
I was surprised.

I am poor at Japanese expression.
And I am Osaka dialect.
There is not the reason why my blog is readable to a foreign person.
Fortunately I have two blog.
My one blog tries English.

I am studying English.
It just to have started, and cannot write it well.
So I will write the blog when using translation service of the Internet.

As I write English blog 3 times and do not stop, I wish continue it.