What is 4-H? 4-H is a comprehensive youth development program of Virginia Cooperative Extension. Young people, ages 5-19 engage in hands-on learning experiences under the guidance if 4-H Extension Agents & trained adults or teen 4-H volunteers. 4-H Motto: To Make the Best Better! 4-H Colors: The 4-H colors are green & white. The white is for purity. The green, nature’s most common color, is for life and youth.