July
Climate
Kansai region (where I live) experienced an unusually cool "Baiu (Japanese
rainy season)" this summer, with day highs staying under 30oC till the middle of July.
On rainy or cloudy days, I was able to leave my fuchsias on the balcony
without feeling worried about damage by heat.
After the Japan Meteorological Agency announced, on July 24, that the rainy
season appeared to have ended in Kansai Region, daytime temperatures began
to exceed 30oC consistently.
Now, the notorious heat spell has started. It will last for two months
at the shortest, and fuchsia growers have to fight against it.
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Lower leaves issue of triphylla hybrids
Gartenmeister Bonstedt (July 7)
It's sad to see triphylla hybrids shedding their lower leaves.
They usually begin to yellow and drop at the beginning of flower season.
I've not discovered an effective way to prevent this problem.
Here is a stem as an example, which has lost leaves on its lower half.
My fuchsia friend in England has once told me that the triphylla hybrids
planted in the ground can retain their lower leaves better than those planted
in pots, as they can enjoy more free root run.
Unfortunately I don't have ground garden, as I live on an upper floor of
a condominium.
Edit 2009: I have reached a conclusion that high temperature contributes
a lot to this problem and it's almost impossible to maintain lower leaves
in our outdoor climate.
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Supplement
High night temperatures can severely exhaust plants.
I spray glucose solution (1 g of glucose per 1 liter of water) once or
twice a week to compensate for the energy source spent during the night.
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Where I place fuchsias in July
Temperature below 27 oC
While the temperatures are still in a tolerable range (day high: 26 - 27oC, day low: 22oC or lower), fuchsias can be grown outside all day.
Temperature close to 30oC
After the rainy season, the temperature rises severely. Fuchsias can be
placed outdoors only in the morning while the temperature is still below
30oC.
In the afternoon, they have to be brought indoors. Here the temperature
is several degrees lower than outside.
In the evening, they can be taken back outdoors again, if the night temperature
is still tolerable.
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Hot, stuffy night
Toward the end of July, the night temperature begins to stay above 25oC.
Air conditioning is necessary all night for humans to sleep comfortably.
This also applies to fuchsias. They spend nights in the air-conditioned
dining-living room (temperature: 25 - 26oC).
In March I had a total number of 26 fuchsia plants. Now, the number is
reduced to 19, which is necessary to handle individual plants more carefully.

Note that most of my fuchsias are highly heat-tolerant. Only heat-tolerant
fuchsias can survive at above temperatures. Less heat-tolerant fuchsias
require cooler conditions.
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Tip/s I keep in mind is/are to:
- Observe how fast the compost get dried to know whether fuchsias are taking
water normally. If the compost dries too slowly, this can mean the fuchsia
has closed its stomata because of severe heat and stopped taking water,
which can lead to root rot as the compost is saturated with water for a
long time. To help the fuchsia to take up water normally, it is advisable
to immediately move the fuchsia to a cooler place.
Term/s:
- AmeDAS - Automatic Meteorological Data Acquisition System installed by
the Japan Meteorological Agency. A total of 13,000 AmeDASs are installed
across Japan (as of January 2007). The measurement data are accessible
via the Internet.
(July 21, 2007)
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