These low-maintenance planters are perfect for small spaces like office windowsills, desks and end tables. They are drought tolerant and love the sun. Keep them away from extreme cold temperatures and be sure you do not over water them as standing water in these containers can cause the roots to rot. Common varieties of succulents we often use are Sempervivum tectorum, Echeveria imbricata and Zwartkop. Standard is 4" x 4" squareMedium is 5" x 5" squareLarge is 6" x 6" squareDeluxe is 12" x 4"