Dot Trudrop planters are made from premium, high-density polyethylene so they're lightweight and ultra-durable. The self-watering system utilizes the space between the double walls as a water reservoir. Depending on the weather and type of plant, the reservoir generally requires refilling every two to six weeks, freeing you from daily watering. Inspired by Braille, the designer added a raised-dot surface pattern that brings intriguing texture when viewed up close. Dot Trudrop planters are a natural for flowers, herbs and vegetables; the larger planters also accommodate shrubs and small trees. Use them to frame your entryway, grow your favorite culinary herbs or perk up your patio. They're available in multiple sizes and colors, allowing you to create dramatic groupings. By repeating a single style of planter, your artistic arrangement will have a unified look. These rugged planters are made from UV-resistant polyethylene and will easily withstand both high and low outdoor temperatures.