It's because of the soil type, they need acidic soil!!
If the bush is otherwise healthy then it is probably chlorosis. This can be remedied by a couple of ounces of Epsom Salts in a can of water and water round the roots.
Water it with an Epsom salts mixture it is suffering from chlorosis.
The sudden drop in air temperature is a stimulus.
it could be the shortening of the day or the drop in temp. depends on the plant species
A sudden drop in the temperature
A sudden drop in temperature would be a response to a stimulus.
The sudden drop in air temperature is a stimulus.
Sudden change of load Sudden drop of vacuum Sudden drop of Main steam temperature.
too much water and or fertilizer,
it can give you an awful headache cause of the changes in pressure and barometer. just take a wet wash cloth and put it over your eyes
why does eugenia trees drop lots of leaves
BOILER EXPLOSION- Caused by a sudden drop in pressure (failure on the steam side) without acorresponding drop in temperature.
Some causes for a sudden water pressure drop: 1) A big leak on the main supply line. 2) one or more faucets or shower heads opened on the same water line. 3) A utility water pump failure.
i need to know what in the environment changes the leaves to drop