Read this first, then open the attached file:

A class of elementary students wanted to make a planter to take home and wanted to have a plant that was easy to take care of in it so it was decided to use cactus plants. The students planted the cactus seeds in the planters and they grew nicely but unfortunately were not allowed to take them home.
See attachment to see why.
The cactus plants were removed and a small ivy replaced them and the children were then allowed to take them home.