Heat plan in the Bonsaituin.
Today I forced a shadow tent over part of the Bonsai collection in the Arboretum Kalmthwood.
Thirty-five degrees in the shade, the Acers can just handle that. In the full sun, this is murderous hot.
Also the dwarf water lilies have a hard time in their granite vats.
In a tree in nature, the temperature at the roots, in winter, is not lower than 10°C at -20°C. In summer, at 30°C, the roots are only warm 15°C. So only 5° difference between summer and winter.
In a bonsa shell the temperature quickly rises to 65°C in the sun and in winter it also freezes to -20°C outside temperature. So a difference of 85°C between summer and winter.
Because of this persistent heat wave, many plants from the northern regions or from the high mountains have a difficult time in our region. Other Mediterranean species do exceptionally well with this weather.
Seeds and berries abound.
Numerous visitors enjoy the vast tree-covered area in the shade of the trees. After a walk on one of the many couches, or on the terrace of the cafeteria.
