Arbor Day is celebrated on March 21. It's not a national holiday but instead schools nationwide celebrate this day with environment-related activities, namely tree planting.
Tips for printing coloring book page or coloring sheet:
Step 1: Click on "Print" link of your choice, if you want a
Arbor tree image for coloring yourself then you need to click on "Print
Arbor tree Coloring page (B/W)" link. If you want colored (already filled with colors)
Arbor tree graphic to print then click "Print
Arbor tree Coloring page (Color)".
Step 2: Now a new pop-up window will open along the
Arbor tree image of your choice (if new window does not open-up then you may need to check your pop-up blocker settings.). Now click on "PRINT". This will open printer dialog, select your print and print.