Enough space for watering

These factors may lead to the situation when water flows through the pot walls instead of the substrate. Then the soil abstracts from pot borders. In some cases the borders will be watered enough, however the tree could stay dry. That is why you should rather do watering with small watering-can very carefully. Unfortunately there is not enough space for watering inside the pot. Except some species which require hard and bonsai trees for sale alkaline waters. If there is no soft water at your location, you can always use various products for softening. The water should not be harder than 12 German degrees. Carbonates which exist in water may change the soil reaction with the result of modifying nutriments into form unavailable for the plant.