Yesterday I went out and said 'birkat ha-ilanot' right across the street from my home. The blessing is made when you see two fruit trees (can be two of the same but two different ones are better) in blossom after Rosh Hodesh Nissan (the first day of Nissan - the month that marks the beginning of spring).
The blessing reads:
Take a few minutes out of your hectic day to appreciate the wonders of creation.
Bless you hashem, king of the universe, who left nothing lacking in the world,Such an eloquent thought.
and created good creations and good and beautiful trees for mankind to enjoy.
The tree on the left is an avocado and on the right is a date palm.