Urban Harvest is another great Houston place to volunteer if you like to be outdoors.
It’s a nonprofit that runs community gardens, Farmers’ Markets, and healthy-food-related classes throughout the city. You can help with gardening, assist with community classes for children or others, work on Earth Day projects, or help with events like the markets or the big annual fruit tree sale. (If you’re under 12, a parent or guardian has to volunteer with you.)
This year, Earth Day (4/22) will be on a Sunday, and planning for Earth Day projects is starting next month. If you might want to help, sign up on the Urban Harvest volunteer page. Projects throughout Houston “may include building or repairing garden beds, mulching pathways, planting fruit trees, building picnic tables, and much more.”