Ricinus communis
Description:
A cultivated shrub that may freeze back in cold areas. Grows 6-15 feet tall. Large-lobed leaves are 1-3 feet across on young plants, smaller on older plants. The mottled black, brown and white glossy seeds are enclosed in a spiny husk and grow in clusters on the seed stalk.
Poisonous Parts:
Entire plant, especially the seeds