You can compare an emergency tree service just on the lines of any other type of tree service. You can compare it how many you need your car to go for a wash? What would be the frequency in terms of laundry? The number of times you are going to need these services would depend on a host of factors.
All of us are part of a world where time does appear to be at a premium. So the obvious fact would be that you do not have a lot of time to tend for the trees. If you need the services of someone you may have to get in touch with them once in a while. On your preference, this could be once in a month as well. The main reason why people go on to hire the services of tree professionals would be in terms of space. They do not have the time to cut down on trees in case of a hefty schedule.
Then the budget would also have an important role in the choice of a tee service provider. This could be a costly affair if you do have other bills in order to pay on time. if you dedicate a budget to it then at least once a month or so you can go on to avail the services. If you do not have the money to devote it on a monthly basis, then on the financial status it does make sense to opt for it once in 3 months.
The type of tree
This also assumes a lot of importance in the first place. In order to hire a tree service, it would also depend upon the type of tree service you are going to avail. Some trees are prone to trimming so that it may look beautiful and neat at all times. In case of some others, it may require maintenance once in a while to ensure the proper upkeep of the trees. There are some trees that go on to grow a lot slower than the others. This would give you a fair idea on the type of tree service you are going to need.
You own choices along with preferences
The type of tree you are going to take care would also depend upon the choice of a tree service provider. Once it boils down to your own tastes. If you are of the opinion that they might need service or maintenance then you need to get in touch with a tree service expert who will do the job for you. it does not have to be on a weekly or monthly basis. It all depends upon how frequent the trees need trimming and pruning. Sometimes you can feel that you can do the service at your own end. Then do not hire the services of a professional but resort to planning out things at your own end. This saves a lot of money.