Beware of the wind and high temperatures. Together they will dry your tree out in hours. A few hours of totally dry roots will kill a tree. So check all your trees every day and water them properly.
Should it happen that your tree dry out totally, dunk it in water so that the water cover the soil. Leave it like that for at least an hour but not more than a day. This will ensure that the rootball will be watered. Often the rootball of trees that dry out will not absorb water and even though you water it until the water come out of the drainage holes it will still be dry. You can also put a bit of Superthrive in the water but don't feed the tree until its regained its health. Place the tree in a cool place.
You can now also feed your fruit bearing trees, since all fruit should have developed sufficiently to stay on the tree.
Keep an eye on your fruit bearing trees. Bonsai like flowering quince and pomegranate will reroute all their energy to their fruit and you will find that even though the fruit look nice and healthy the rest of the tree will slowly deteriorate and branches will die of. This can be controlled by removing all the fruit or reducing them to one or two.
Fruit bearing trees like fire thorns, crab apple and cotoneaster don't seem to have any problem with loads of fruit. It appears that only the trees with larger fruit have this problem.
Don't pot any of your trees this month. Its to hot. Only repot a tree if its an emergency, ask for assistance from a bonsai nursery or experienced grower.
Look out for insects. Sucking mites are very active and can severely damage your tree if not kept under control. Look out for white fly on olives. Control it by spraying the tree several times over a period of two weeks with a contact poison.
Keep on pruning your elms even if it appear that they have stopped growing. Elms do tend to stop growing this time of the year but by pruning even the small bits of growth they will keep on growing and you will be able to develop the fine ramification on your tree. Wild Olives tend to do the same, if you stop pruning them they stop growing.
Remember trees with wire. Look out for wire damage.
Stop pruning your Coleonema Alba, Money trees (Krasula) or Azaleas. Krasulas will flower in February. Coleonema Alba and Azalea now start to form the new flower buds for the winter. If you are going to prune them now you will probably have very few or no flowers in winter.
Wisteria - height 70 cm
Chinese Cork bark Elm showing new buds - height 95cm